order family genus species author locality date collector # of slides parts mounted on slideEphemeroptera Ametropodidae Ametropus albrighti San Juan River, Farmington, New Mexico 11/1/1933 P.N. Albright 4 nymph, genitalia, legs, head, mouthparts, wing padEphemeroptera Ametropodidae Ametropus albrighti San Juan River, Farmington, New Mexico 10/14/1934 P.N. Albright 3 nymph, wing pad, head, mouthpartsEphemeroptera Baetidae Baetis adonis San Gabriel Mts., California 7/23/1932 C.D. Michener female, imago, wingsEphemeroptera Baetidae Baetis adonis San Gabriel Mts., California 6/3/1932 C.D. Michener 3 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis amplus Traver Alamance Creek, North Carolina 3/21/1929 male, wingsEphemeroptera Baetidae Baetis amplus Traver Big Alamance Creek, North Carolina 2/20/1930 female, wingsEphemeroptera Baetidae Baetis amplus Traver Hamburg Lake, North Carolina 3/31/1929 larvaEphemeroptera Baetidae Baetis amplus Traver Cullasaja River, North Carolina 6/24/1929 nymphEphemeroptera Baetidae Baetis atrebatinus Wolf Creek, Colorado 9/16/1933 P.N. Albright female, larvaEphemeroptera Baetidae Baetis australis Goshen Swamp, North Carolina 4/11/1929 J.G. Needham 3 female + male, imago, 9th + 10th sternites, wings, genitalia Ephemeroptera Baetidae Baetis australis Mossy Creek, near Fort Valley, Georgia 6/1/1931 P.W. Fattig 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis australis Gadsen, Alabama 7/9/1932 H. Dietrich 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis bicaudatus Dodds Hudson Bay Creek ?, Glacier National Park, Montana 7/6/1932 A.S. Hazzard larvaEphemeroptera Baetidae Baetis bicaudatus Dodds Reynolds Creek, Glacier National Park, Montana 7/20/1932 A.S. Hazzard larvaEphemeroptera Baetidae Baetis bicaudatus Dodds Lake St. Mary, Glacier National Park, Montana 6/9/1932 A.S. Hazzard larvaEphemeroptera Baetidae Baetis bicaudatus Dodds Gothic Brooks, Colorado larvaEphemeroptera Baetidae Baetis bicaudatus Dodds Colorado female, imago, wingsEphemeroptera Baetidae Baetis bicaudatus Dodds Colverdale, California 10/4/1917 J.C. Bradley female, imago, wingsEphemeroptera Baetidae Baetis cingulatus Trade, Tennessee 6/9/1936 L.C. Thomsen 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis codius Butalaura, Chile 4/5/1920 larvaEphemeroptera Baetidae Baetis devinctus Waddel Creek, California D. Shepherd 5 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis erebus Phoenix, Arizona 5/7/1918 J.C. Bradley maleEphemeroptera Baetidae Baetis erebus Santa Catalina Mts, Bear Canyon, Arizona 5/3/1931 L.P. Wehrle 4 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis erebus Tucson, Arizona 1/15/1921 L.P. Wehrle 2 female, imago, wingsEphemeroptera Baetidae Baetis erebus Austin, Texas June H.J. Parks Jr. 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis endymion Johnston County, Oklahoma 3/19/1932 R.B. Bird + A. Sandoz 5 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis endymion Hurray County, Oklahoma 3/22/1931 R.B. Bird 3 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis ephippiata Fort Valley, Georgia + Rome, Georgia 6/1/1931 + 8/3/1931 P.W. Fattig 4 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis flavistriga McDunnogh Ithaca, New York 7/13/1931 C.N. Hardy 5 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis flavistriga McDunnogh Fall Creek, Varna, New York 7/15/1931 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis flavistriga McDunnogh Ithaca, New York 6/24/1933 E.C. Hodson 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis flavistriga McDunnogh Bear Gulley, near Willoughby, Ohio 8/4/1929 J.R. Traver female, larval exuviumEphemeroptera Baetidae Baetis flavistriga McDunnogh Moores Creek, Nardens, West Virginia 8/13/1930 female, nymphEphemeroptera Baetidae Baetis flavistriga McDunnogh St. Regis River, Fort Jackson, New York 6/21/1932 L. Harper male, imago, wingsEphemeroptera Baetidae Baetis frondalis Cascades Point, Quebec, Canada 7/4/1930 J. McDunnough 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis frondalis Moose, Wyoming 8/4/1929 E.B. Klots male, imago, wingsEphemeroptera Baetidae Baetis frondalis Cherry Swamp, Beaufort County, North Carolina 4/12/1929 larvaEphemeroptera Baetidae Baetis garcianus Tanama River, Puerto Rico 5/12/1935 J. Garcia-Diaz 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis garcianus Tanama River, Puerto Rico 3/13/1935 J.G. Needham + J. Garcia-D 2 male, imago, genitaliaEphemeroptera Baetidae Baetis garcianus Yunez River, Puerto Rico 8/14/1935 J. Garcia-Diaz 2 female, imago, wingsEphemeroptera Baetidae Baetis garcianus Isabella, Puerto Rico 4/24/1930 M.D. Leonard male, imago, genitaliaEphemeroptera Baetidae Baetis garcianus Las Cruces, Puerto Rico 4/4/1930 M.D. Leonard male, imago, wingsEphemeroptera Baetidae Baetis garcianus Mount Brittons trail, Luquillo Mts, Puerto Rico 7/7/1935 J. Garcia-Diaz female, imago, wingsEphemeroptera Baetidae Baetis garcianus Carreres River, Puerto Rico 3/9/1935 J.G. Needham + J. Garcia-Diaz nymph, mouthpartsEphemeroptera Baetidae Baetis incertans Valle Crucis, North Carolina 5/30/1936 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis incertans Ringwood Creek, Ringwood, New York 6/20/1933 J.R. Traver male, imago, genitaliaEphemeroptera Baetidae Baetis incertans Flat Creek, Nebraska 6/15/1929 + 6/12/1930 2 male, imago, wingsEphemeroptera Baetidae Baetis intercalaris McDunnoughBottomless Pools, North Carolina 6/17/1929 larvaEphemeroptera Baetidae Baetis intercalaris Fall Creek, Ithaca, New York 7/26/1901 J.G. Needham male, imago, wingsEphemeroptera Baetidae Baetis intercalaris Fish Hatchery, Ithaca, New York 6/19/1931 J.G. Needham ? 3 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis intercalaris Fish Hatchery, Ithaca, New York 6/12/1932 J.R. Traver male, imago, genitaliaEphemeroptera Baetidae Baetis intercalaris Ithaca, New York 7/13/1931 C.N. Hardy 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis intercalaris Old Forge, New York 7/16-17/1905 J.G. Needham 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis intercalaris St. Regis River, Fort Jackson, New York 9/13/1932 L. Harper male, imago, wingsEphemeroptera Baetidae Baetis intercalaris St. Regis River, Fort Jackson, New York 9/14/1933 L. Harper male, imago, wingsEphemeroptera Baetidae Baetis intercalaris Power Plant, near Varna, New York 6/28/1933 J.G. Needham 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis intercalaris Clemson College, South Carolina 5/11/1933 D. Dunavan 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis intercalaris Conococheague Park, near Hagerstown, Maryland 6/3/1925 V. Argo 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis intercalaris Harpers Ferry, Potomac River, Maryland 8/3/1926 V. Argo 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis intercalaris no locality data maleEphemeroptera Baetidae Baetis levitans St. Regis River, Hopkinton, New York 3/9/1931 L. Harper 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis levitans St. Regis River, Fort Jackson, New York 9/13/1932 L. Harper 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis levitans St. Regis River, Fort Jackson, New York 9/14/1933 L. Harper male, imago, genitalia, wingsEphemeroptera Baetidae Baetis moffati Colorado G.S. Dodds 2 male, imago, genitalia, wings

Ephemeroptera Baetidae Baetis moffati Pikes Park, Colorado June 1932 R.T. Gilmore male, imago, wingsEphemeroptera Baetidae Baetis moffati Gothic, Colorado Bowen male, imago, wingsEphemeroptera Baetidae Baetis moffati Waddel Creek, Stanford College, California D. Shepherd male, imago, wingsEphemeroptera Baetidae Baetis moffati no locality data G.S. DoddsEphemeroptera Baetidae Baetis pallidulus Jordan, Ontario, Canada 6/13/1926 G.S. Walley 3 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis parallelus Parma, Idaho 7/6/1928 M.D. Leonard 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis parvus Blairmore, Alberta, Canada 7/15/1930 J.M. Pepper 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis parvus Old Man River, Lundbreck, Alberta, Canada 7/12/1930 J.M. Pepper 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis parvus Upper Kintla Lake, Glacier National Park, Montana 8/16/1933 R.T. Young 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis parvus Briggs Run, near Smoke Hole, West Virginia 8/7/1930 J.R. Traver 4 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis peruvianus Matucana, Peru May 1920 4 body partsEphemeroptera Baetidae Baetis peruvianus Rio Santa Cruz, Peru 1900 Silvester body parts, wingsEphemeroptera Baetidae Baetis peruvianus no locality data 2 body parts, wingsEphemeroptera Baetidae Baetis piscatoris Waddel Creek, Stanford College, California D. Shepherd 4 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis pluto McDunnoughHominy Creek, North Carolina 7/18/1930 female, nymphEphemeroptera Baetidae Baetis propinquus Sheffield, Alabama 7/4/1936 J.R. Traver + L.C. Thomsen male, imago, genitaliaEphemeroptera Baetidae Baetis propinquus Ithaca, New York 6/1/1891 or 1896 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis propinquus Fairport, Iowa H.E. Schraedick 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis pygmaeus Saranac Inn, New York 7/30/1900 J.G. Needham female, imago, wingEphemeroptera Baetidae Baetis pygmaeus Canajohrie, New York 7/3/1934 H.K. Townes male, imago, wingsEphemeroptera Baetidae Baetis pygmaeus Fall Creek, Varna, New York 8/3/1931 female, imago, wingsEphemeroptera Baetidae Baetis pygmaeus Fall Creek, Ithaca, New YorkEphemeroptera Baetidae Baetis pygmaeus Coteau-du-Lac, Quebec, Canada 6/25/1925 F.P. Ide 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis pygmaeus Harpers Ferry, Potomac River, Maryland 8/3/1926 V. Argo 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis pygmaeus Locust Grove, Oklahoma 5/5/1934 E.E. Ivy 3 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis pygmaeus Conococheague Park, near Hagerstown, Maryland 7/22/1926 V. Argo 2 female + male, imago, wingsEphemeroptera Baetidae Baetis pygmaeus Conococheague Park, near Hagerstown, Maryland 6/3/1925 V. Argo 3 female + male, imago, genitalia, wingsEphemeroptera Baetidae Baetis quilleri Tuttle, Idaho 9/19/1930 3 female + male, imago, genitalia,wingsEphemeroptera Baetidae Baetis rhodani Bellevue, Wyoming 6/21/1929 E.B. Klots larval exuviumEphemeroptera Baetidae Baetis rusticus St. Regis River, Fort Jackson, New York 9/14/1933 L. Harper male, imago, wingsEphemeroptera Baetidae Baetis spinosus Chattahoochee River, Atlanta, Georgia 6/7/1932 P.W. Fattig 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis spinosus Saranac Inn, New York 7/22/1905 J.G. Needham 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis thermophilos Upper Geysir Basin, Yellowstone National Park, Wyom 8/29/1928 J. McDunnough female, imago, wingsEphemeroptera Baetidae Baetis tricaudatus Doods Yellowstone National Park, Wyoming 9/1/1921 Muttkowski 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis tricaudatus Doods Logan River, Utah 6/21/1926 J.G. Needham 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis tricaudatus Doods Cascadilla Creek, Ithaca, New York 5/2/1931 3 male, imago, genitalia, wings, legs, larval exuviumEphemeroptera Baetidae Baetis tricaudatus Doods Cascadilla Creek, Ithaca, New York 5/5/1932 J.R. Traver 3 male, imago, genitalia, wings, larvaEphemeroptera Baetidae Baetis tricaudatus Doods Ithaca, New York 4/30/1937 J.R. Traver male, nymphEphemeroptera Baetidae Baetis tricaudatus Doods Denver, Colorado 9/1/1905 Oslar female, imago, wingsEphemeroptera Baetidae Baetis tricaudatus Doods Flat Creek, Black Mts, North Carolina 6/13/1929 larval exuviumEphemeroptera Baetidae Baetis tricaudatus Doods Glacier National Park, Montana 6/9/1932 female, nymphEphemeroptera Baetidae Baetis tricaudatus Doods Chimney Rock, North Carolina 8/4/1929 male, nymphEphemeroptera Baetidae Baetis tricaudatus Doods Cowll mountain Stream, North Carolina 6/28/1929 female, nymphEphemeroptera Baetidae Baetis tricaudatus Doods Munson, O ? 2/8/1929 larvaEphemeroptera Baetidae Baetis tricaudatus Doods Red River, Carson National Forest, Taos County, New 6/30/1964 R.K. Allen larvaEphemeroptera Baetidae Baetis tricaudatus Doods Sugar Grove, Cove Creek, North Carolina 6/9/1936 J.R. Traver larvaEphemeroptera Baetidae Baetis tricaudatus Doods San Gabriel River, Los Angeles County, California 4/23/1965 larvaEphemeroptera Baetidae Baetis vagans Ithaca, New York 7/13/1931 C.N. Hardy 3 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis vagans Ithaca, New York 6/18/1904 J.G. Needham 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis vagans Ithaca, New York 6/20/1931 C.N. Hardy 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis vagans Slaterville, New York 5/20/1932 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis vagans Big Spring Creek, Leesburg, Virginia 7/8/1933 E.W. Surber 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis vagans Foot Bridge, Ithaca, New York 4/25/1915 J.G. Needham male, imago, genitaliaEphemeroptera Baetidae Baetis vagans Ithaca, New York 10/21/1932 M.D. Leonard male, imago, genitaliaEphemeroptera Baetidae Baetis sp Power Plant, near Varna, New York 6/28/1933 J.G. Needham 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis sp Rocky Broad River, Nebraska 6/23/1930 female, imago, wingsEphemeroptera Baetidae Baetis sp Flat Creek, North Carolina 6/12/1930 male, imago, genitalia, legsEphemeroptera Baetidae Baetis sp Potomac River, north fork, West Virginia 8/7/1930 J.R. Traver 2 male, imago, wingsEphemeroptera Baetidae Baetis sp Goshen Swamp, North Carolina 4/2/1929 J.G. Needham female, imago, wingsEphemeroptera Baetidae Baetis sp Smoke Hole, near Fk. Potomac River, West Virginia 8/6/1930 J.R. Traver male, imago, wingsEphemeroptera Baetidae Baetis sp Conococheague Park, near Hagerstwon, Maryland 7/22/1926 V. Argo male, imago, wingsEphemeroptera Baetidae Baetis sp Sheffield, Alabama 7/4/1936 J.R. Traver + L.C. Thomsen male, imago, wingsEphemeroptera Baetidae Baetis sp Greenville, South Carolina 5/22/1932 H.K. Townes male, imago, wingsEphemeroptera Baetidae Baetis sp Briggs Run, near Smoke Hole, West Virginia 8/7/1930 J.R. Traver male, imago, wingsEphemeroptera Baetidae Baetis sp Marlinton, West Virginia July 1930 J.G. Needham male, imago, wings

Ephemeroptera Baetidae Baetis sp Cloverdale, California 10/4/1917 J.C. Bradley 9 female + male, imago, genitalia, wingsEphemeroptera Baetidae Baetis sp Aliso Canyon, California 6/27/1923 T.M. R. 2Ephemeroptera Baetidae Baetis sp Tacquits Valley, California 6/9/1922 T.M. R. 4Ephemeroptera Baetidae Baetis sp Cohils County, California 4/23/1923 T.M. R. 5 femaleEphemeroptera Baetidae Baetis sp Enemonga ? 1/15/1923 wingsEphemeroptera Baetidae Baetis sp California 8/24/1917Ephemeroptera Baetidae Baetis sp Palm Canon 1/4/1923 T.M. R.Ephemeroptera Baetidae Baetis sp Eel River, California 5/23/1922 female + maleEphemeroptera Baetidae Baetis sp Murtaugh, Idaho 8/24/1930 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis sp Tuttle, Idaho 9/19/1930 female, imago, wingsEphemeroptera Baetidae Baetis sp Hagerman, Idaho 6/6/1930 female, imago, wingsEphemeroptera Baetidae Baetis sp Worrell Creek, Lake County, Ohio 8/1-13/1929 J.R. Traver 2 female + male, genitalia, wingsEphemeroptera Baetidae Baetis sp Ringwood Creek, Ringwood, New York 6/20/1933 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis sp Beebe Lake, Ithaca, New York E.C. Hodson 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis sp Cranberry Lake, New York 6/14/1920 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis sp Truno, Nova Scotia, Canada 7/16/1913 R. Matheson male, imago, wingsEphemeroptera Baetidae Baetis sp St. Regis River, Hopkinton, New York 6/29/1932 L. Harper male, imago, wingsEphemeroptera Baetidae Baetis sp Orlando, FloridaEphemeroptera Baetidae Baetis sp no locality dataEphemeroptera Baetidae Baetis sp no locality data wingEphemeroptera Baetidae Baetis sp Potomac River, north fork, West Virginia 8/7/1930 J.R. Traver female, imago, wingsEphemeroptera Baetidae Baetis sp Moose, Wyoming 8/4/1929 E.B. Klots male, imago, genitaliaEphemeroptera Baetidae Baetis sp Smoke Hole, near Fk. Potomac River, West Virginia 8/5/1930 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis sp Smoke Hole, near Fk. Potomac River, West Virginia 8/6/1930 J.R. Traver male, imago, genitaliaEphemeroptera Baetidae Baetis sp Marlinton, West Virginia July 1930 J.G. Needham male, imago, genitaliaEphemeroptera Baetidae Baetis sp Briggs Run, near Smoke Hole, West Virginia 8/7/1930 J.R. Traver male, imago, genitaliaEphemeroptera Baetidae Baetis sp Logan River, Utah 7/13/1926Ephemeroptera Baetidae Baetis sp Great Smoky Mts., Tennessee 6/12/1930 P.N. Musgrave 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis sp Yakima, Washington 7/23/1928 M.D. Leonard female, imago, wingsEphemeroptera Baetidae Baetis sp Conococheague Park, near Hagerstown, Maryland 7/23/1926 V. Argo male, imago, genitaliaEphemeroptera Baetidae Baetis sp Birch Glen, Logan, Utah 6/21/1926 J.G. Needham male, imago, wingsEphemeroptera Baetidae Baetis sp Logan River, Utah nuymphsEphemeroptera Baetidae Baetis sp Corvallis, Oregon 7/4/1907 H.A. Scullen male, imago, genitaliaEphemeroptera Baetidae Baetis sp Wolf Creek, Colorado 9/16/1933 P.N. Albright male, nymphEphemeroptera Baetidae Baetis sp New York 5/15/1907Ephemeroptera Baetidae Baetis sp no locality dataEphemeroptera Baetidae Baetis sp no locality data 5/7/1907Ephemeroptera Baetidae Baetis sp no locality data 6/5/1924Ephemeroptera Baetidae Baetis sp Whisky Creek, George County, Mississippi 3/4/1932 H. Dietrich female, subimago, wingsEphemeroptera Baetidae Baetis sp Chickmanga Creek, Ringgold, Georgia 7/24/1931 P.W. Fattig female, imago, wingsEphemeroptera Baetidae Baetis sp Catawba River, North Carolina 6/17/1929 female, imago, wingsEphemeroptera Baetidae Baetis sp Scales Lake, North Carolina 10/22/1928 female, imago, wingsEphemeroptera Baetidae Baetis sp Fowlers Mills, near Chardon, Ohio 8/27/1929 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis sp Worrel Creek, Lake County, Ohio 8/13/1929 J.R. Traver male, imago, wingsEphemeroptera Baetidae Baetis sp Johnston County, Oklahoma 3/19/1932 R.D. Bird 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis sp Corvallis, Oregon 7/4/1907 M.A. Gowlen male, imago, wingsEphemeroptera Baetidae Baetis sp Greenville, South Carolina 6/9/1931 H.K. Townes 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis sp Greenville, South Carolina 5/22/1932 H.K. Townes male, imago, genitaliaEphemeroptera Baetidae Baetis sp El Yunque trail, Puerto Rico 7/27/1935 J. Garcia-Diaz nymph, entire, mouthpartsEphemeroptera Baetidae Baetis sp Caguitas River, Puerto Rico 3/4/1935 J.G. Needham + J. Garcia-D 3 nymph, entire, mouthparts, gillsEphemeroptera Baetidae Baetis sp no locality data 6/21/1932 2 nymph, mouthparts, gillsEphemeroptera Baetidae Baetis sp no locality data 6/21/1932 male, imago, genitalia, body partsEphemeroptera Baetidae Baetis sp Potreriblos ?, Argentina nymphEphemeroptera Baetidae Baetis sp Huacapistoma, Rio Tarma, Peru 1920 nymphEphemeroptera Baetidae Baetis sp Rio Cruz ?, Patagonia, Argentina 2 male, imago, genitalia, wingsEphemeroptera Baetidae Baetis sp locality not readable January 1905 E.B. W.Ephemeroptera Baetidae Baetodes sp Huacapistana, Rio Tarma, Peru 1920 larvaEphemeroptera Baetidae Baetodes sp no locality dataEphemeroptera Baetidae Callibaetis americanus Gothic, Colorado J. Bowen female, imago, wingsEphemeroptera Baetidae Callibaetis californicus Chino Reservoir, Chino, California 10/17/1923 T.R. Seemann female, imago, wingsEphemeroptera Baetidae Callibaetis californicus Chino Reservoir, Chino, California 10/16/1922 4 female, wings, mouthparts, subimago, wings, male, genitaliaEphemeroptera Baetidae Callibaetis californicus Logan River, Utah 10/22/1922 J.G. Needham nymph sloughEphemeroptera Baetidae Callibaetis californicus locality not readable wingsEphemeroptera Baetidae Callibaetis carolus Big Bear Lake, San Bernadino Mts, California 8/24/1932 C.D. Michener 2 male, imago, genitalia, wingsEphemeroptera Baetidae Callibaetis completa Rio Piedras, Experiment Station, Puerto Rico September 1930 F. Sein female, imago, wings

Ephemeroptera Baetidae Callibaetis ferrugineus McLean, New York 8/10/1929 male, imago, genitalia, legsEphemeroptera Baetidae Callibaetis ferrugineus McLean, New York 8/24/1929 male, imago, genitalia, legsEphemeroptera Baetidae Callibaetis ferrugineus McLean, New York 8/31/1929 male, imago, genitalia, legsEphemeroptera Baetidae Callibaetis ferrugineus Golf pond, Ithaca, New York 6/23/1933 J.G. Needham male, imago, wingsEphemeroptera Baetidae Callibaetis ferrugineus Bar Harbor, Maine 9/9/1931 A.E. Brower male, imago, wingsEphemeroptera Baetidae Callibaetis ferrugineus Mud Pond, McLean, New York 8/5/1924 male, imago, wingsEphemeroptera Baetidae Callibaetis fluctuans Hatchery pond, Ithaca, New York 9/4/1932 J.G. Needham male, imago, wingsEphemeroptera Baetidae Callibaetis fluctuans Hatchery, Ithaca, New York 5/27/1932 male, imago, wingsEphemeroptera Baetidae Callibaetis fluctuans Gold pond, Ithaca, New York J.R. Traver male, imago, wingsEphemeroptera Baetidae Callibaetis fluctuans Fairport, Iowa H.E. Schraedick male, imago, wingsEphemeroptera Baetidae Callibaetis fluctuans McLean, New York 8/31/1924 female, imago, wingsEphemeroptera Baetidae Callibaetis fluctuans Iowa wingsEphemeroptera Baetidae Callibaetis fuscus Yellowstone National Park, Wyoming July 1922 2 male, imago, genitalia, wings, legsEphemeroptera Baetidae Callibaetis fuscus Yellowstone National Park, Wyoming July 1922 2 male, imago, wingsEphemeroptera Baetidae Callibaetis fuscus Scott Lake, Oregon 6/16/1930 J.E. Davis 2 male, imago, genitalia, wings, legsEphemeroptera Baetidae Callibaetis fuscus Lapwai, Idaho 5/12/1924 2 male, imago, wingsEphemeroptera Baetidae Callibaetis fuscus no locality dataEphemeroptera Baetidae Callibaetis hageni Beebe Lake, Ithaca, New York 5/10/1927 2 male, imago, genitalia, wings, legsEphemeroptera Baetidae Callibaetis hageni Golf pond, Ithaca, New York 5/28/1932 2 female, imago, wings, male, imago, partsEphemeroptera Baetidae Callibaetis hageni Ithaca, New York 4/21/1932 nymphEphemeroptera Baetidae Callibaetis hageni Mud pond, McLean, New York 7/23/1924 female, imago, wingsEphemeroptera Baetidae Callibaetis hageni Golf pond, Ithaca, New York 5/25/1932 male, imago, wingsEphemeroptera Baetidae Callibaetis hageni La Grand + Big Lake, Oregon 1906-1929 A.L. Lovett female, imago, wingsEphemeroptera Baetidae Callibaetis hageni San Joaquin River, California 7/18/1931 C.D. Michener female, imago, wingsEphemeroptera Baetidae Callibaetis montanus Farmington, New Mexico 10/4/1934 P.N. Albright nymph sloughEphemeroptera Baetidae Callibaetis montanus Weslaeo, Texas S.W. Clarke female, imago, wingsEphemeroptera Baetidae Callibaetis nigritus Polina Lake, Oregon 8/17/1930 H.A. Scullen 2 male, imago, genitalia, wings, legsEphemeroptera Baetidae Callibaetis nigritus Anthony Lake, Blue Mts., Oregon 8/7/1929 H.A. Scullen 2 male, imago, genitalia, wings, legsEphemeroptera Baetidae Callibaetis nigritus no locality data 8/29/1921 male, imago, wingsEphemeroptera Baetidae Callibaetis pacificus Big Bear Lake, San Bernadino Mts, California 9/4/1932 C.D. Michener 2 female + male, imago, genitalia, wingsEphemeroptera Baetidae Callibaetis pacificus Indian hills, near Claremont, California 1/24/1923 T.M. R. wingsEphemeroptera Baetidae Callibaetis pacificus Indian hills, Claremont, CaliforniaEphemeroptera Baetidae Callibaetis pacificus Claremont, California 3/8/1923 2 female, imago, wingsEphemeroptera Baetidae Callibaetis pacificus Julietta, Idaho 10/6/1934 R.E. Rodock female, imago, wingsEphemeroptera Baetidae Callibaetis pacificus Arroyo Seco, Pasadena, California 9/30/1931 C.D. Michener female, imago, wingsEphemeroptera Baetidae Callibaetis pacificus Jemez Springs, New Mexico 7/17/1928 H.E. Murphy female, imago, wingsEphemeroptera Baetidae Callibaetis pallidus Fort Collins, Colorado 8/6/1912 C.P. Gillate female, imago, wingsEphemeroptera Baetidae Callibaetis semicostatus Estes Park, Colorado 8/24/1919 male, imago, wingsEphemeroptera Baetidae Callibaetis skokianus Golf pond, Ithaca, New York 5/28/1932 female, imago, wingsEphemeroptera Baetidae Callibaetis skokianus no locality data female, imago, wingsEphemeroptera Baetidae Callibaetis skokianus no locality data 5/1/1901 wingEphemeroptera Baetidae Callibaetis skokianus no locality data 1902 male, abdomenEphemeroptera Baetidae Callibaetis skokianus no locality data wingsEphemeroptera Baetidae Callibaetis sp Cobils Canyon, CaliforniaEphemeroptera Baetidae Callibaetis sp Alluras ?, California 8/24/1917 2 male, imago, genitalia, wingsEphemeroptera Baetidae Callibaetis sp Chino Reservoir, Chino, California 10/16/1922 2 wingsEphemeroptera Baetidae Callibaetis sp Indian hills, Claremont, California 1/24/1923 T.M. R.Ephemeroptera Baetidae Callibaetis sp Indian hills, California 1/24/1923 male, imago, genitaliaEphemeroptera Baetidae Callibaetis sp Tahquits Valley, San Facinte Mts., California 9/6/1923 mouthpartsEphemeroptera Baetidae Callibaetis sp Monticello, Florida 3/8/1919 Hoffmann 2 female, imago, wingsEphemeroptera Baetidae Callibaetis sp Monticello, Florida 3/26/1919 W.A. Hoffmann female, imago, wingsEphemeroptera Baetidae Callibaetis sp Royal Palm Park, Florida 4/10/1930 W.S. Blatchla female, imago, wingsEphemeroptera Baetidae Callibaetis sp Fairport, Iowa October 1916 wingsEphemeroptera Baetidae Callibaetis sp Phillips, Maine 7/20/1909 2 male, imago, genitalia, wingsEphemeroptera Baetidae Callibaetis sp Madison Lake, Montana 8/13/1931 A.M. French 2 male, imago, wingsEphemeroptera Baetidae Callibaetis sp Ithaca, New York July 1919 4 wings, body partsEphemeroptera Baetidae Callibaetis sp Ithaca, New York 4/19/1932 J.R. Traver nymphEphemeroptera Baetidae Callibaetis sp Reidsville Road, 9 miles Greenboro, North Carolina spring 1927 2 nymphEphemeroptera Baetidae Callibaetis sp Reidsville Road, North Carolina 1927 nymphEphemeroptera Baetidae Callibaetis sp locality not readable 8/1/1921 2 wingsEphemeroptera Baetidae Callibaetis sp College Station, Texas 6/3/1931 J.C. Gaines 2 male, imago, genitalia, wingsEphemeroptera Baetidae Callibaetis sp locality not readable J.C. Bishoff wingsEphemeroptera Baetidae Callibaetis sp locality not readable wingsEphemeroptera Baetidae Callibaetis sp locality not readable 3/5/1913 body partsEphemeroptera Baetidae Callibaetis sp White Pine Lake, Utah 7/12/1922 2 body parts, wings

Ephemeroptera Baetidae Callibaetis sp White Pine Lake, Utah 2 body parts, wingsEphemeroptera Baetidae Callibaetis sp Utah 7/16/1924 body partsEphemeroptera Baetidae Callibaetis sp Wellsville, Utah 6/16/1926 2 body parts, wingsEphemeroptera Baetidae Callibaetis sp Logan River, Utah 7/19/1926 J.G. Needham female, imago, wingsEphemeroptera Baetidae Callibaetis sp Waterworks, Logan River, Utah 6/15/1926 3 male, imago, wings, body partsEphemeroptera Baetidae Callibaetis sp Yakima, Washington 7/23/1928 M.D. Leonard 2 male, imago, genitalia, wingsEphemeroptera Baetidae Callibaetis sp Yellowstone Lake, Wyoming 8/20/1921 2 body parts, wingsEphemeroptera Baetidae Callibaetis sp Green Lake, Wisconsin 1921 W.S. Marshall 2 male, imago, genitalia, wingsEphemeroptera Baetidae Callibaetis sp Tortuguero, Puerto Rico 3/20/1935 J.G. Needham + J. Garcia-D 2 nymph, entire, gillsEphemeroptera Baetidae Callibaetis sp Paraguay River, Brazil wingsEphemeroptera Baetidae Callibaetis sp El Campamiento, Peru 6/18/1920 Perene larvaEphemeroptera Baetidae Callibaetis sp Havanna, Cuba 10/11/1921 wingEphemeroptera Baetidae Centroptilum asperatum Big Bear Lake, San Bernardino Mts, California 8/29/1932 C.D. Michener 2 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum bifurcatum Tuttle, Idaho 8/16/1930 4 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum bifurcatum Hollister, Idaho 8/13/1929 2 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum conturbatum Moose, Wyoming 8/4/1929 E.B. Klots 4 male, imago, genitalia, wings, legsEphemeroptera Baetidae Centroptilum conturbatum Moose, Wyoming August 1929 E.B. Klots 3 male, imago, genitalia, wings, legsEphemeroptera Baetidae Centroptilum conturbatum Waddel Creek, Stanford College, California D. Shepherd 6 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum convexum Singhampton, Ontario, Canada 6/28/1930 F.P. Ide 2 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum elsa Moose, Wyoming 7/30/1929 E.B. Klots 6 male, imago, genitalia, wings, nymph sloughsEphemeroptera Baetidae Centroptilum fragile Fort Jackson, New York 6/21/1932 L. Harper 4 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum fragile Ottawa, Ontario, Canada 8/7/1924 F.P. Ide 2 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum ozburni Ottawa, Ontario, Canada 7/28/1924 G.S. Walley 2 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum ozburni Ringwood, New York 6/22/1933 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum ozburni Fall Creek, Varna, New York 6/23/1932 J.R. Traver nymphEphemeroptera Baetidae Centroptilum rivulare Chagrin River, Kirtland, Ohio 8/6-7/1932 J.R. Traver 3 male, imago, genitalia, wings, legsEphemeroptera Baetidae Centroptilum rivulare Kirtland, Ohio 8/8/1932 J.R. Traver nymph sloughEphemeroptera Baetidae Centroptilum rivulare Kirtland, Ohio 8/6/1932 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum rufostrigatum Harpers Ferry, Maryland 8/3/1926 V. Argo 4 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum rufostrigatum Fredericton, N. B., ? 6/16/1928 W.J. Brown 2 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum simile St. Regis River, Fort Jackson, New York 6/21/1932 L. Harper 3 male, imago, genitalia, wings, legsEphemeroptera Baetidae Centroptilum simile St. Regis River, Fort Jackson, New York 9/13/1932 L. Harper male, imago, genitaliaEphemeroptera Baetidae Centroptilum simile Burke Falls, Ontario, Canada 7/17-19/1926 F.P. Ide 4 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum simile Nassau, New York 6/12/1932 L. Harper 2 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum venosum San Gabriel Mts., California 6/24/1932 C.D. Michener 3 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum venosum San Gabriel Mts., California 6/26/1932 C.D. Michener 2 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum walshi Chipola Lake, Florida 4/8/1927 J.G. Needham 2 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum walshi Manhattan, Kansas 1933 R.C. Smith male, imago, wingsEphemeroptera Baetidae Centroptilum sp Cobils Canyon, California 4/23/1923 T.R. Seemann male, subimago, genitaliaEphemeroptera Baetidae Centroptilum sp Cobils Canyon, California 4/23/1923 T.M. R. 3 female, imago + subimago, wingEphemeroptera Baetidae Centroptilum sp Greenville County, South Carolina 6/2/1932 H.K. Townes 2 male, imago, genitalia, wingsEphemeroptera Baetidae Centroptilum sp Blitzen River, Oregon 7/6/1906 2 male, imago, genitalia, wings, legsEphemeroptera Baetidae Centroptilum sp Phoenix, Arizona 5/7/1918 J.C. R. male, imago, wingsEphemeroptera Baetidae Centroptilum sp Rock Creek, North Carolina 7/10/1930 larvaEphemeroptera Baetidae Centroptilum sp Cloverdale, California 10/4/1919 J.C. Bradley female, imago, wingsEphemeroptera Baetidae Centroptilum sp Sheffield, Alabama 7/4/1936 J.R. Traver female, imago, wingsEphemeroptera Baetidae Centroptilum sp Swannanoa River, North Carolina 7/3/1930 female, imago, wingsEphemeroptera Baetidae Cloeodes consignata Camp Yimez River, Puerto Rico 6/21/1935 J. Garcia-Diaz female, imago, wingEphemeroptera Baetidae Cloeodes maculipes Luquillo Mts., Puerto Rico 6/14/1935 J. Garcia-Diaz male, imago, wings, nymph sloughEphemeroptera Baetidae Cloeodes maculipes La Coca Creek, Loquillo Mts, Puerto Rico 5/26/1935 J. Garcia-Diaz nymph, mouthpartsEphemeroptera Baetidae Cloeodes maculipes Hicaca River, Puerto Rico 3/7/1935 J. Garcia-Diaz nymph, mouthpartsEphemeroptera Baetidae Cloeodes portoricense Utuado Road, Puerto Rico 3/13/1935 J.G. Needham + J. Garcia-D 2 nymphs, entire, mouthpartsEphemeroptera Baetidae Cloeodes portoricense Lares, Guajatica Creek, Puerto Rico 3/22/1935 J.G. Needham + J. Garcia-Diaz nymph, wing padsEphemeroptera Baetidae Cloeodes portoricense Lares, Puerto Rico 3/23/1935 J. Garcia-Diaz male, imago, genitaliaEphemeroptera Baetidae Cloeodes portoricense Yunez River, Puerto Rico 6/23/1935 J. Garcia-Diaz male, imago, genitaliaEphemeroptera Baetidae Cloeodes portoricense Yunez River, Puerto Rico 6/29/1935 J. Garcia-Diaz male, nymph sloughEphemeroptera Baetidae Cloeodes portoricense Luquillo Mts., Puerto Rico 2/18/1935 J.G. Needham + J. Garcia-Diaz female, imago, wingsEphemeroptera Baetidae Cloeodes sp Utuabo Road, Puerto Rico 3/13/1935 J.G. Needham + J. Garcia-D 3 nymph, entire, mouthparts, wing padEphemeroptera Baetidae Cloeodes sp Yunez River, Puerto Rico 8/14/1935 J. Garcia-Diaz female, imago, wingsEphemeroptera Baetidae Cloeodes sp Luquillo Mts., Puerto Rico 2/18/1935 J.G. Needham + J. Garcia-Diaz female, imago, wingsEphemeroptera Baetidae Cloeon alamance Alamance Creek, North Carolina 3/10/1929 5 nymphsEphemeroptera Baetidae Cloeon alamance Alamance Creek, North Carolina 3/11/1929 2 male, imago + subimago, genitalia, wingsEphemeroptera Baetidae Cloeon alamance Alamance Creek, North Carolina 3/19/1929 2 male, imago, genitalia, wings, legsEphemeroptera Baetidae Cloeon alamance Alamance Creek, North Carolina 4/5/1929 8 female, male, imago, subimago, genitalia, wings, body partsEphemeroptera Baetidae Cloeon alamance Alamance Creek, North Carolina 1/22/1930 6 nymphs, body parts

Ephemeroptera Baetidae Cloeon alamance Spero, stream near Spero, North Carolina 3/24/1929 nymphEphemeroptera Baetidae Cloeon bimaculata Rasjai, India February 1907 N. Ammandale 5 female + maleEphemeroptera Baetidae Cloeon ingens Pingree Park, Colorado 8/20/1924 C.R. Crosby 2 male, imago, genitalia, wingsEphemeroptera Baetidae Cloeon ingens Jim pond, Eustis, Maine 10/8/1933 A.E. Brower 2 male, imago, genitalia, wingsEphemeroptera Baetidae Cloeon marginata Rasjai, India February 1907 N. Ammandale femaleEphemeroptera Baetidae Cloeon mentax Old Forge, New York August 1905 J.G. Needham 2 male, imago, genitalia, wingsEphemeroptera Baetidae Cloeon mentax Old Forge, New YorkEphemeroptera Baetidae Cloeon rubropictum Ithaca, New York July 1931 C.N. Hardy 2 male, imago, genitalia, wingsEphemeroptera Baetidae Cloeon rubropictum Ridean River, Ottawa, Ontario, Canada 6/29/1927 J. McDunnough male, imago, genitaliaEphemeroptera Baetidae Cloeon vicinum Cacapon River, West Virginia 8/13/1930 2 male, imago, genitalia, wingsEphemeroptera Baetidae Cloeon sp Old Forge, New York wingEphemeroptera Baetidae Cloeon sp Fish Hatchery, Ithaca, New York 6/19/1931 J.G. Needham wingEphemeroptera Baetidae Cloeon sp Wardensville, West Virginia 7/21/1931 J.R. Traver wingEphemeroptera Baetidae Cloeon sp Kankondigea, New Zealand ? + Sunderbuns, India ? 11/14/1909 2 male, body parts, wingsEphemeroptera Baetidae Cloeon sp Yfriranga ?, Brazil 3/22/1898 2 female, body parts, wingsEphemeroptera Baetidae Cloeon sp Puerto Rico 3/5/1909 female, body parts, wingsEphemeroptera Baetidae Cloeon sp San Porto ?, ? 11/25/1923 female + male, wingsEphemeroptera Baetidae Heterocloeon curiosum Buffalo, New York 7/11/1906 2 body parts, wingsEphemeroptera Baetidae Heterocloeon curiosum St. Lawrence River, Montreal, Quebec, Canada 7/9/1933 E.G. Grieve 2 male, imago, genitalia, wingsEphemeroptera Baetidae Heterocloeon curiosum Potomac River, Harpers Ferry, Maryland 6/16/1926 V. Argo male, imago, genitaliaEphemeroptera Baetidae Pseudocloeon carolina Caratunk, Maine 7/5/1931 A.E. Brower 2 male, imago, genitalia, wingsEphemeroptera Baetidae Pseudocloeon carolina Selicia, North Carolina 7/13/1930 2 nymph, entire, mouthpartsEphemeroptera Baetidae Pseudocloeon cingulatum Golf Course, Quebec, Canada 7/2/1929 F.P. Ide male, imago, genitaliaEphemeroptera Baetidae Pseudocloeon cingulatum Kearney, Ontario, Canada 6/22/1926 F.P. Ide male, imago, genitaliaEphemeroptera Baetidae Pseudocloeon dubium Buffalo, New York 7/31/1906 C. Betten 3 male, imago, genitalia, wingsEphemeroptera Baetidae Pseudocloeon dubium Flat Creek, North Carolina 6/19/1930 2 nymph, entire, mouthpartsEphemeroptera Baetidae Pseudocloeon dubium Rideau River, Ottawa, Ontario, Canada 8/19/1925 J. McDunnough male, imago, genitaliaEphemeroptera Baetidae Pseudocloeon dubium Sheffield, Alabama 7/4/1936 L.C. Thomsen + J.R. Traver male, subimago, genitaliaEphemeroptera Baetidae Pseudocloeon etowah Etowah River, Rome, Georgia 8/16/1931 P.W. Fattig 2 male, imago, genitalia, wingsEphemeroptera Baetidae Pseudocloeon etowah Chickmanga Creek, Ringgold, Georgia 5/23/1931 P.W. Fattig male, imago, genitaliaEphemeroptera Baetidae Pseudocloeon oldendorffi Santa Fe, New Mexico 4 body parts, wingsEphemeroptera Baetidae Pseudocloeon parvulum Tillsonburg, Ontario, Canada 6/5/1926 G.S. Walley 2 male, imago, genitaliaEphemeroptera Baetidae Pseudocloeon veteris Austin, Texas June H.B. Parks Jr. 4 male, imago, genitalia, wingsEphemeroptera Baetidae Pseudocloeon sp Narrows, north fork, McCurtain County, Oklahoma 4/5/1931 R.D. Bird 2 male, imago, genitalia, wingsEphemeroptera Baetidae Pseudocloeon sp small stream near Stokes Ferry, North Carolina 4/2/1929 J.R. Traver 3 nymph, entire, mouthparts, wingpadsEphemeroptera Baetidae Pseudocloeon sp Catawba River, North Carolina 6/16/1930 2 nymph, entire, mouthpartsEphemeroptera Baetidae Pseudocloeon sp Rocky Board River, North Carolina 6/23/1930 2 nymph, mouthparts, head, legsEphemeroptera Baetidae Pseudocloeon sp Johnston County, Oklahoma 7/19/1932 R.D. Bird male, imago, genitaliaEphemeroptera Baetidae Pseudocloeon sp Pigeon River, Hazelwood, North Carolina 7/16/1929 larvaEphemeroptera Baetidae Pseudocloeon sp Ithaca, New York 8/9/1919 wingsEphemeroptera Baetidae Protobaetis ? riosus ? Huacapistana, Rio Tarma, Peru 1920 larvaEphemeroptera Baetidae Rhoeon ? canarum ? Matucana, Peru 1920 female + male, nymph, body partsEphemeroptera Baetidae Baetidae sp Doon River ?, Scotland, United Kingdom 8/27/1921Ephemeroptera Baetidae Baetidae sp Santa Fe, New Mexico body parts, wingsEphemeroptera Baetiscidae Baetisca callosa Elk Garden, West Virginia 8/21/1930 5 nymph, body partsEphemeroptera Baetiscidae Baetisca callosa Johnny Lake, West Virginia 1930 nymph, body partsEphemeroptera Baetiscidae Baetisca callosa West Virginia headEphemeroptera Baetiscidae Baetisca carolina West Virginia headEphemeroptera Baetiscidae Baetisca carolina Station 24, North Carlina 4/12/1930 4 male, subimago, head, wingsEphemeroptera Baetiscidae Baetisca carolina Station 24, North Carlina 4/13/1930 2 female, imago, wings, legsEphemeroptera Baetiscidae Baetisca carolina Station 24, North Carlina 3/25/1930 nymph, legsEphemeroptera Baetiscidae Baetisca carolina Station 24, North Carlina 4/18/1929 male, nymphEphemeroptera Baetiscidae Baetisca carolina Station 24, North Carlina 5/1/1929 nymph slough, headEphemeroptera Baetiscidae Baetisca carolina Big Alamance Creek, Tom's Place, North Carolina 4/13/1930 2 male, imago, genitalia, legsEphemeroptera Baetiscidae Baetisca lacustris Willowick, Ohio 7/9/1934 J.R. Traver male, imago, genitaliaEphemeroptera Baetiscidae Baetisca obesa Douglas Lake, Michigan 6/21/1930 4 male, imago, genitalia, wings, legsEphemeroptera Baetiscidae Baetisca obesa locality not readable 6/17/1907 2 maleEphemeroptera Baetiscidae Baetisca obesa locality not readableEphemeroptera Baetiscidae Baetisca obesa Elkhart, Indiana male, subimago, wingsEphemeroptera Baetiscidae Baetisca rubescens St. Lambert, Quebec, Canada 7/3/1927 4 female + male, imago, genitalia, wings, legsEphemeroptera Baetiscidae Baetisca thomsenae Valle Crucis, North Carolina 6/2/1936 J.R. Traver male, subimago, wingsEphemeroptera Baetiscidae Baetisca thomsenae Valle Crucis, North Carolina 6/3/1936 J.R. Traver 3 female + male, subimago, head, mouthparts, wingsEphemeroptera Baetiscidae Baetisca thomsenae Valle Crucis, North Carolina 6/4/1936 J.R. Traver nymph, legsEphemeroptera Baetiscidae Baetisca thomsenae Valle Crucis, North Carolina 6/6/1936 J.R. Traver 4 female + male, imago, genitalia, wings, subanal plateEphemeroptera Baetiscidae Baetisca thomsenae Valle Crucis, North Carolina 6/7/1936 J.R. Traver nymph, mouthparts

Ephemeroptera Baetiscidae Baetisca thomsenae Valle Crucis, North Carolina 6/8/1936 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Baetiscidae Baetisca thomsenae Valle Crucis, North Carolina 6/14/1936 J.R. Traver male, imago, wingsEphemeroptera Baetiscidae Baetisca sp Morgentown, West Virginia 10/3/1931 P.N. Musgrave nymph, head, legsEphemeroptera Baetiscidae Baetisca sp Morgentown, West Virginia 10/7/1931 P.N. Musgrave nymph, head, legsEphemeroptera Baetiscidae Baetisca sp Sacendoga Lake, ? C.P. Alexander fenale, nymph, left legsEphemeroptera Baetiscidae Baetisca sp Upper Ausable Lake, New York 8/15/1931 P.R. Needham nymph, mouthparts, legs, headEphemeroptera Caenidae Brachycercus lacustris Syracuse, New York 6Ephemeroptera Caenidae Brachycercus nitida Saranac Lake, New York 7/20/1900 J.G. Needham nymph sloughEphemeroptera Caenidae Brachycercus nitida Station 3, North Carolina 7/16/1930 nymph, mouthparts, head, legsEphemeroptera Caenidae Brachycercus nitida Rocky Broad River, North Carolina 7/2/1930 2 female, imago, wings, 9th sternumEphemeroptera Caenidae Brachycercus nitida Little River, North Carolina 7/12/1930 2 nymph, mouthparts, head, legsEphemeroptera Caenidae Brachycercus nitida Toxaway River, North Carolina 7/16/1930 nymph, entireEphemeroptera Caenidae Caenis amica Hamburg Lake, North Carolina 4/10-25/1929 3 nymph, entire, mouthparts, head, legsEphemeroptera Caenidae Caenis amica Great Heath, Bar Harbor, Maine 7/22/1936 W.M. Procter 3 male, imago, genitalia, wingsEphemeroptera Caenidae Caenis diminuta Gainesville, Florida 3/19/1927 T.H. Hubbell male, imago, genitaliaEphemeroptera Caenidae Caenis filaris locality not readable (maybe Ithaca, New York) 3 maleEphemeroptera Caenidae Caenis forcipata Cass Lake, Minnesota 7/4/1932 L.A. Carruth male, imago, genitaliaEphemeroptera Caenidae Caenis jocosa Winter Haven, Texas 10/22/1933 S.E. Jones male, imago, genitaliaEphemeroptera Caenidae Caenis punctata shore of Granite Island ?, ? 5/20/1925 maleEphemeroptera Caenidae Caenis punctata locality not readableEphemeroptera Caenidae Caenis ridens Taughannock Park, New York 7/7/1931 2 male, imago, genitalia, wingsEphemeroptera Caenidae Caenis ridens Pt. Elgin, Ontario, Canada 8/1/1933 E.G. Grieve male, imago, genitaliaEphemeroptera Caenidae Caenis ridens Ithaca, New York 7/18/1901Ephemeroptera Caenidae Caenis simulans Logan River, Utah 7/1-2/1926 2 imaginesEphemeroptera Caenidae Caenis simulans Nassau, New York 6/9/1908 male, imago, genitaliaEphemeroptera Caenidae Caenis simulans Murray Bay, California August 1888 male, imago, genitaliaEphemeroptera Caenidae Caenis simulans McLean, New York 8/21/1924 male, imago, genitaliaEphemeroptera Caenidae Caenis simulans locality not readable maleEphemeroptera Caenidae Caenis simulans McLean, New York 6/20/1924 2 maleEphemeroptera Caenidae Caenis sp Murray County, Oklahoma 4/2/1931 R.D. Bird male, imago, genitaliaEphemeroptera Caenidae Caenis sp no locality data 2Ephemeroptera Caenidae Caenis sp Fall Creek, Ithaca, New York 7/9/1901 J.G. Needham male, imago, genitaliaEphemeroptera Caenidae Caenis sp Beebe Lake, Ithaca, New York 6/2/1933 J.R. Traver male, imago, genitaliaEphemeroptera Caenidae Caenis sp Big Alamance Creek, North Carolina 4/13/1929 nymph, head, legs, mouthpartsEphemeroptera Caenidae Caenis sp Hamburg Lake, North Carolina 4/10-25/1929 2 nymph, entire, head, mouthpartsEphemeroptera Caenidae Caenis sp Moose River, New York 8/25/1905 J.G. Needham 2 nymph, head, legs, mouthparts, entireEphemeroptera Caenidae Caenis sp Saranac, New York 7/20/1900 J.G. Needham nymph sloughEphemeroptera Caenidae Caenis sp Saranac, New York 7/7/1900 J.G. Needham nymphsEphemeroptera Caenidae Caenis sp Tenderfoot Lake, Wisconsin July 1912 W.S. Marshall 4 male, imago, genitalia, wingsEphemeroptera Caenidae Caenis sp Cleveland County, Oklahoma 6/7/1931 R.D. Bird 3 male, imago, genitaliaEphemeroptera Caenidae Caenis sp Rio Piedras, Puerto Rico 5/23/1935 J. Garcia-Diaz nymph sloughEphemeroptera Caenidae Caenis sp Raijar, India 2/1-7/1902 female + maleEphemeroptera Caenidae Caenis sp Zambesi River, southern Africa 2/4/1908 HowardEphemeroptera Caenidae Caenis sp no locality dataEphemeroptera Ephemerellidae Drunella spinifera Big Blackfort River, Montana 6/20/1906 F.E. B. 3Ephemeroptera Ephemerellidae Ephemerella aestiva Old Forge, New York 7/1-3/1905 femaleEphemeroptera Ephemerellidae Ephemerella aestiva Fall Creek, Ithaca, New York 6/4/1910 maleEphemeroptera Ephemerellidae Ephemerella aestiva Spencer Bridge ? 5/21/1930 female, subimagoEphemeroptera Ephemerellidae Ephemerella aestiva no locality data 4/5/1930Ephemeroptera Ephemerellidae Ephemerella aestiva Seneca Lake, near Waltins, New York 6/1/1930Ephemeroptera Ephemerellidae Ephemerella aestiva locality not readable 2 female + maleEphemeroptera Ephemerellidae Ephemerella angusta Park ? 1921 J.G. NeedhamEphemeroptera Ephemerellidae Ephemerella allegheniensis Cacapon River, West Virginia 8/13/1930 J.G. Needham headEphemeroptera Ephemerellidae Ephemerella allegheniensis Capon River, West Virginia 7/13/1930 nymphEphemeroptera Ephemerellidae Ephemerella allegheniensis Elk Garden, West Virginia 8/21/1930 abdomen, gillsEphemeroptera Ephemerellidae Ephemerella attenuata Sheffield, Massachusetts May 1929 2Ephemeroptera Ephemerellidae Ephemerella attenuata Caloden Creek, Maryland 2/19/1926Ephemeroptera Ephemerellidae Ephemerella aurivillii Bradore Bay, Quebec, Canada 7/27/1929 W.J. Brown 2 nymph, head, mouthparts, bodyEphemeroptera Ephemerellidae Ephemerella aurivillii Bradore Bay, Quebec, Canada 7/16/1930 W.J. Brown male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella aurivillii Thunder River, Quebec, Canada 6/27/1930 W.J. Brown male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella aurivillii Joyce Preserve ?, Pennsylvania 5/4/1930 nymphEphemeroptera Ephemerellidae Ephemerella bicolor Salmon Creek, New York 3/23/1930Ephemeroptera Ephemerellidae Ephemerella bicolor Salmon Creek, New York 7/12/1930Ephemeroptera Ephemerellidae Ephemerella bicolor Grass River, New York 6/2/1930 femaleEphemeroptera Ephemerellidae Ephemerella bicolor Grass River, New York 6/24/1930

Ephemeroptera Ephemerellidae Ephemerella bicolor Keuka Lake, New York 1/7/1907 2 femaleEphemeroptera Ephemerellidae Ephemerella bicolor Slaterville, New York 7/26/1929 2 maleEphemeroptera Ephemerellidae Ephemerella bicolor Slaterville, New York July 1929 femaleEphemeroptera Ephemerellidae Ephemerella bicolor McLean, New York 7/23/1924Ephemeroptera Ephemerellidae Ephemerella bicolor New Brunswick ?, CanadaEphemeroptera Ephemerellidae Ephemerella bicolor Buchanan River, ? 5/19/1925 2Ephemeroptera Ephemerellidae Ephemerella bicolor Buchanan River, ? 4Ephemeroptera Ephemerellidae Ephemerella bicolor Blarford Brook, ? 5/16/1930Ephemeroptera Ephemerellidae Ephemerella bicolor Seneca Lake, near Wattins, New York 6/12/1930 femaleEphemeroptera Ephemerellidae Ephemerella bicolor River Junction, Florida 4/8/1927 J.G. Needham male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella bicolor Axton, New York 6/12-22/1901 male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella bicolor Wawasee Lake, Indiana 6/10/1927 male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella bicolor Beaver Falls, West Virginia 7/24/1930Ephemeroptera Ephemerellidae Ephemerella bicolor Keuka Lake, New YorkEphemeroptera Ephemerellidae Ephemerella bicolor Skerry ?, ? 7/7/1930Ephemeroptera Ephemerellidae Ephemerella bicolor Sockel Bridge, Lisbon, New York 6/20/1930Ephemeroptera Ephemerellidae Ephemerella bicolor locality not readable 6/23/1920 femaleEphemeroptera Ephemerellidae Ephemerella catawba Cascades, North Carolina 5/10/1930 2 male, imago, genitalia, wings, legsEphemeroptera Ephemerellidae Ephemerella catawba Catawba River, North Carolina 6/21/1929 nymph, head, legs, mouthpartsEphemeroptera Ephemerellidae Ephemerella catawba Watauga River, Valle Crucis, North Carolina 5/29/1936 J.R. Traver female, nymph sloughEphemeroptera Ephemerellidae Ephemerella catawba Ocona Lufty River, North Carolina 7/28/1930 nymph, head, legs, mouthpartsEphemeroptera Ephemerellidae Ephemerella catawba Scotts Creek, North Carolina 4/8/1930 J.S. Gutsell nymph, head, legs, mouthpartsEphemeroptera Ephemerellidae Ephemerella catawba Marlinton, Pocahontas County, West Virginia 7/30/1930Ephemeroptera Ephemerellidae Ephemerella catawba Mt. LeConte, Tennessee 8/14/1929 J.G. Needham male, nymph, entireEphemeroptera Ephemerellidae Ephemerella cherokee Swannanoa River, North Carolina 7/8/1930 2 nymph, head, legs, mouthpartsEphemeroptera Ephemerellidae Ephemerella cherokee Conestee Creek, North Carolina 2/7/1930 2 female, nymph, head, legs, mouthpartsEphemeroptera Ephemerellidae Ephemerella cherokee Conestee Creek, North Carolina 7/19/1930 J.R. Traver 2 female, imago, wings, male, subimago, genitaliaEphemeroptera Ephemerellidae Ephemerella cherokee Cedar Creek, North Carolina 6/30/1929 2 nymph, head, mouthpartsEphemeroptera Ephemerellidae Ephemerella cherokee Cedar Creek, North Carolina 7/25/1930 J.R. Traver 3 male, imago, genitalia, wings, female, subimago, wingEphemeroptera Ephemerellidae Ephemerella cognata Waddell Creek, Stanford, California D. Shepherd 2 nymph, mouthparts, legs, thorax, abdomenEphemeroptera Ephemerellidae Ephemerella coloradensis San Gabriel Canyon, San Gabriel Mts, California 5/25/1932 C.D. Michener 2 male, imago, genitalia, wings, legsEphemeroptera Ephemerellidae Ephemerella coloradensis Logan River, Utah 7/9-26/1926 6Ephemeroptera Ephemerellidae Ephemerella coloradensis San Antonio Canyon, California 5/12/1923 body partsEphemeroptera Ephemerellidae Ephemerella coloradensis San Antonio Canyon, California 6/11/1923 T.M. R. 2 femaleEphemeroptera Ephemerellidae Ephemerella coloradensis Fort Temple, Logan Canyon, ? 7/26/1926 maleEphemeroptera Ephemerellidae Ephemerella coloradensis locality not readable BowenEphemeroptera Ephemerellidae Ephemerella coloradensis San Gabriel Mts., California 5/23/1932 C.D. Michener nymph, head, mouthparts, legsEphemeroptera Ephemerellidae Ephemerella coloradensis no locality dataEphemeroptera Ephemerellidae Ephemerella concinnata Cutbank Creek ?, Glacier National Park, Montana 6/27/1932 A.S. Howard 3Ephemeroptera Ephemerellidae Ephemerella conestee Cedar Creek, North Carolina 7/25/1930 2 female, nymph, head, mouthparts, legsEphemeroptera Ephemerellidae Ephemerella conestee Pigeon River, North Carolina 8/2/1930 2 male, imago, wings, subimago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella conestee Pigeon River, North Carolina 7/20/1930 nymphsEphemeroptera Ephemerellidae Ephemerella conestee Pigeon River, North Carolina 7/30/1930 female, imago, wingsEphemeroptera Ephemerellidae Ephemerella conestee Flat Creek, Black Mts., North Carolina 6/27/1930 male, subimago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella conestee Davidson River, North Carolina 6/20/1930 nymph, head, legsEphemeroptera Ephemerellidae Ephemerella cornuta McLaughin Springs, West Virginia 8/1/1930 2 female, nymph, mouthparts, head, legsEphemeroptera Ephemerellidae Ephemerella cornuta Catawba River, North Carolina 6/19/1929 male, subimago, legsEphemeroptera Ephemerellidae Ephemerella cornuta Catawba River, North Carolina 6/20/1929 3 female, nymph, mouthparts, legs, nymph sloughEphemeroptera Ephemerellidae Ephemerella cornuta Tarbell, New York 6/22/1924 2 nymph, mouthparts, head, legsEphemeroptera Ephemerellidae Ephemerella cornuta Flat Creek, North Carolina 6/11/1930 male, imago, wingsEphemeroptera Ephemerellidae Ephemerella cornuta Knowlton, Quebec, Canada 7/4/1929 male, imago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella cornuta Valle Crucis, North Carolina 6/10/1936 J.R. Traver male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella cornuta Flax Creek, tributary of Swannanoa River, North Carolina J.R. TraverEphemeroptera Ephemerellidae Ephemerella cornuta Terra Atta, Preston County, West Virginia 8/28/1930 J.G. NeedhamEphemeroptera Ephemerellidae Ephemerella cornuta Harford Brook, New York 5/16-17/1930 femaleEphemeroptera Ephemerellidae Ephemerella cornuta Lily Pad Pond, St. Huberts, New York 7/9/1929 maleEphemeroptera Ephemerellidae Ephemerella cornuta North Spencer, New York 5/23/1930 femaleEphemeroptera Ephemerellidae Ephemerella cornuta Elizabethtown, Roaring Brook, New York 7/10/1929 maleEphemeroptera Ephemerellidae Ephemerella cornutella Wayah Creek, North Carolina 7/30/1930 nymph sloughEphemeroptera Ephemerellidae Ephemerella cornutella Flat Creek, North Carolina 6/19/1930 nymph, head, legs, mouthpartsEphemeroptera Ephemerellidae Ephemerella cornutella Knowlton, Quebec, Canada 8/2/1929 G.S. Walley male, imago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella cornutella Lecky Gap, North Carolina 6/25/1936 J.R. Traver male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella cornutella Laurel River, North Carolina 7/1/1930 female, imago, wingsEphemeroptera Ephemerellidae Ephemerella cornutella Davidson River, North Carolina 7/9/1930 2 female, nymph, mouthparts, head, legsEphemeroptera Ephemerellidae Ephemerella coxalis Elkhart, Indiana 4/15/1902

Ephemeroptera Ephemerellidae Ephemerella coxalis Harford or Spencer, New York 5/21/1930 2Ephemeroptera Ephemerellidae Ephemerella deficiens Big Alamance Creek, North Carolina 5/22/1929 4 male, imago, genitalia, subimago, legs, female, nymph slouEphemeroptera Ephemerellidae Ephemerella deficiens Cascadilla Creek, Ithaca, New York 6/11/1930 4Ephemeroptera Ephemerellidae Ephemerella deficiens Cascadilla Creek, Ithaca, New York 7/3/1918Ephemeroptera Ephemerellidae Ephemerella deficiens Smoke Hole, Pendleton County, West Virginia 8/7/1930Ephemeroptera Ephemerellidae Ephemerella deficiens Kinderhook Creek, Nassau, New York 6/12/1932 L. Harper male, imago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella deficiens Davidson River, Pisgah Forest, North Carolina 6/20/1936 L.C. Thomsen + J.R. Traver male, imago, wingsEphemeroptera Ephemerellidae Ephemerella deficiens Pigeon River, Waynesville, North Carolina 7/20/1930 female, subimago, wingsEphemeroptera Ephemerellidae Ephemerella doddsii Logan River, Utah 6/25-26/1926 5 female + male, wingsEphemeroptera Ephemerellidae Ephemerella doddsii Logan River, Utah 1/26/1923 mouthparts, body partsEphemeroptera Ephemerellidae Ephemerella doddsii Yellowstone Park, Utah 8/9/1921 female, wingsEphemeroptera Ephemerellidae Ephemerella doddsii Missoula, Montana 6/27/1906Ephemeroptera Ephemerellidae Ephemerella doddsii Glacier National Park, Montana 3/16/1932 2Ephemeroptera Ephemerellidae Ephemerella doddsii locality not readableEphemeroptera Ephemerellidae Ephemerella doris Uharie River, North Carolina 5/6/1929 2 nymph, mouthparts, legsEphemeroptera Ephemerellidae Ephemerella doris Waccamaw Lake, North Carolina 4/10/1929 female, nymph, mouthparts, head, legsEphemeroptera Ephemerellidae Ephemerella doris Big Alamance Creek, North Carolina 5/7/1929 male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella doris Valle Crucis, North Carolina 5/30/1936 J.R. Traver male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella dorothea Forest Port, New York June 1Ephemeroptera Ephemerellidae Ephemerella dorothea Fort Anne, New York 9/23/1929 femaleEphemeroptera Ephemerellidae Ephemerella dorothea Cascadilla Creek, Ithaca, New York 6/11/1930 2 female + maleEphemeroptera Ephemerellidae Ephemerella dorothea Joyce Kilmer Brook ?, Pennsylvania 5/4/1930Ephemeroptera Ephemerellidae Ephemerella dorothea Valle Crucis, North Carolina 6/7/1936 J.R. Traver male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella dorothea Valle Crucis, North Carolina 5/26/1936 J.R. Traver 2 male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella dorothea Clemson College, South Carolina 5/9/1932 D. Bunaran male, imago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella dorothea Greenville, South Carolina 9/9/1931 H.K. Townes male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella dorothea Greenbrier, Great Smoky Mts, Tennessee 6/15/1931 2 male, imago, genitalia, wingsEphemeroptera Ephemerellidae Ephemerella dorothea Caraway Creek, North Carolina 4/20/1929 female, nymph, mouthparts, legs, headEphemeroptera Ephemerellidae Ephemerella dorothea Heaton, North Carolina 6/3/1936 J.R. Traver male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella dorothea Covey Hill, Quebec, Canada 6/17/1927 G.S. Walley male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella dorothea locality not readable 5/30/1930 maleEphemeroptera Ephemerellidae Ephemerella dorothea Caraway Creek, North Carolina 4/24/1930 male, imago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella dorothea Davidson River, Pisgah Forest, North Carolina 6/20/1936 J.R. Traver 2 male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella dorothea Banners Elk, North Carolina 5/31/1936 J.R. Traver 2 male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella dorothea Big Alamance Creek, North Carolina 4/25/1929 J.R. Traver male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella dorothea Ringwood Creek, Ringwood, New York 6/20/1933 J.R. Traver male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella excrucians Hornings Mills, Ontario, Canada 6/27/1928 F.P. Ide male, imago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella euterbe Waddel Creek, California D. Shepherd 2 nymph, head, legs, mouthpartsEphemeroptera Ephemerellidae Ephemerella feminina Sphaerium Brook, McLean, New York 6/4/1924 2 female, wingsEphemeroptera Ephemerellidae Ephemerella flavilinea Lundbreck, Alta. River, ? 7/2/1930 J.H. Pepper male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella flavilinea Pepperwood, California 1918 J.C. BradleyEphemeroptera Ephemerellidae Ephemerella flavilinea Volcano County, California 7/23/1906Ephemeroptera Ephemerellidae Ephemerella flavilinea San Antonio Canyon, California 5/12/1923Ephemeroptera Ephemerellidae Ephemerella flavilinea Ploteou Creek, ? 8/29/1921Ephemeroptera Ephemerellidae Ephemerella flavilinea Halfwood, Moose, Wyoming 8/4/1929 E.B. Klots 2Ephemeroptera Ephemerellidae Ephemerella fratercula Valle Crucis, North Carolina 6/5/1936 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Ephemerellidae Ephemerella funeralis McLean, New York 6/3-6/1931 J.R. Traver male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella funeralis McLean, New York 5/26/1924Ephemeroptera Ephemerellidae Ephemerella funeralis locality not readable J.R. TraverEphemeroptera Ephemerellidae Ephemerella funeralis Seneca Lake, Watkins Glen, New York 1/6/1930Ephemeroptera Ephemerellidae Ephemerella funeralis locality not readable 3/27/1925Ephemeroptera Ephemerellidae Ephemerella fuscata Cascades Point, Quebec, Canada 6/25/1930 G.S. Walley 3 female, nymph, entire, head, mouthpartsEphemeroptera Ephemerellidae Ephemerella glacialis Glacier National Park, Montana 6/9/1932 A.S. Hazzard 2 nymph, body partsEphemeroptera Ephemerellidae Ephemerella grandis Logan River, Utah 6/26/1926 3Ephemeroptera Ephemerellidae Ephemerella grandis Logan River, Utah July 1926 3Ephemeroptera Ephemerellidae Ephemerella hecuba Provo River, Utah 7/28/1926 4 female + maleEphemeroptera Ephemerellidae Ephemerella heterocaudata Yellowstone National Park, Wyoming 8/30/1927 C.R. Crosby male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella inermis Yellowstone National Park, Wyoming 7/23/1928 J. McDunnough male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella inermis Logan River, Utah 7/11/1922Ephemeroptera Ephemerellidae Ephemerella inermis Riffle Island, Logan River, Utah 7/17/1926Ephemeroptera Ephemerellidae Ephemerella inermis Logan River, riffles, Utah 7/19/1926Ephemeroptera Ephemerellidae Ephemerella inermis Provo River, Utah 7/29/1926Ephemeroptera Ephemerellidae Ephemerella inermis Provo River, left fork, Utah 7/28/1926 2Ephemeroptera Ephemerellidae Ephemerella inermis Glacier National Park, Montana 6/16/1932 M.J. M. 2Ephemeroptera Ephemerellidae Ephemerella inermis no locality data wing

Ephemeroptera Ephemerellidae Ephemerella infrequens Locust Grove, Oklahoma 5/5/1934 E.E. Ivy 2 male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella infrequens Seton Lake, Lillooet, British Columbia, Canada 5/28/1926 J. McDunnough male, imago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella infrequens Waterworks, Logan River, Utah 6/28-29/1926 4Ephemeroptera Ephemerellidae Ephemerella infrequens Logan River, Utah 7/9/1926Ephemeroptera Ephemerellidae Ephemerella invaria Kazubazua, Quebec, Canada 6/11/1927 J. McDunnough male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella invaria Beaver Creek, Chicago Bog, near McLean, New York 6/13/1935 E.G. Fisher male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella invaria Nassau, New York 6/2/1906 male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella invaria no locality data wingEphemeroptera Ephemerellidae Ephemerella lata Davidson River, North Carolina 7/25/1929 3 male, imago, genitalia, nymph, head, legs, mouthpartsEphemeroptera Ephemerellidae Ephemerella lata Phillips, Maine 7/13/1909 2 nymph, head, legs, mouthpartsEphemeroptera Ephemerellidae Ephemerella longicornis Cowee Mt., North Carolina 7/15/1929 female, nymph, mouthpartsEphemeroptera Ephemerellidae Ephemerella longicornis Cedar Creek, North Carolina 7/10/1930 female, nymph, head, legsEphemeroptera Ephemerellidae Ephemerella longicornis Cedar Creek, near Glenville, North Carolina 7/25/1930 J.R. Traver 2 male, imago, subimago, genitaliaEphemeroptera Ephemerellidae Ephemerella longicornis Cedar Creek, North Carolina 7/14/1930 2 female, imago, wings, 9th sterniteEphemeroptera Ephemerellidae Ephemerella longicornis Cedar Creek, North Carolina 7/29/1930 male, subimago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella longicornis Cedar Creek, North Carolina 6/30/1929 2 nymph, head, legsEphemeroptera Ephemerellidae Ephemerella longicornis Cedar Creek, North Carolina 7/12/1930 nymph sloughEphemeroptera Ephemerellidae Ephemerella longicornis Cedar Creek, North CarolinaEphemeroptera Ephemerellidae Ephemerella lutulenta Keuka Lake, New York JulyEphemeroptera Ephemerellidae Ephemerella lutulenta Cape Fear River, North Carolina 4/1/1930Ephemeroptera Ephemerellidae Ephemerella lutulenta Mendola, Madison, Wisconsin 12/8/1924 2Ephemeroptera Ephemerellidae Ephemerella lutulenta Cofutere River ?, North Carolina 4/6/1930 J.R. TraverEphemeroptera Ephemerellidae Ephemerella maculata Waddel Creek, California D. Shepherd 2 nymph, body, mouthpartsEphemeroptera Ephemerellidae Ephemerella maculata San Gabriel Canyon, California 5/28/1932 C.D. Michener nymph, head, mouthparts, legsEphemeroptera Ephemerellidae Ephemerella maculata Waddel Creek, Stanford University, California D. Shepherd male, nymph sloughEphemeroptera Ephemerellidae Ephemerella micheneri San Gabriel Mts., California 6/23/1932 C.D. Michener nymph, head, mouthparts, legsEphemeroptera Ephemerellidae Ephemerella micheneri San Gabriel Mts., California 6/25/1932 C.D. Michener male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella micheneri San Gabriel Mts., California 6/28/1932 C.D. Michener 3 male, imago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella micheneri San Gabriel Mts., California 6/9/1932 C.D. Michener male, imago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella micheneri Stanford University, California male, subimago, genitaliaEphemeroptera Ephemerellidae Ephemerella mollitia San Dimas ?, California 2/16/1923 T.M. R. 3 body partsEphemeroptera Ephemerellidae Ephemerella mollitia San Antonio Canyon, California 5/29/1923 T.M. R.Ephemeroptera Ephemerellidae Ephemerella mollitia Cucumongac ?, ? 4/17/1923Ephemeroptera Ephemerellidae Ephemerella needhami Fish Hatchery, Ithaca, New York 6/12/1932 male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella needhami Matlawamkeag, Maine 7/2/1932 A.E. Brower male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella needhami Old Forge, New York 7/1-3/1905 2Ephemeroptera Ephemerellidae Ephemerella needhami Sacandaga River, New York summer 1932 O. Smith female, imago, wingsEphemeroptera Ephemerellidae Ephemerella needhami locality not readable June 1902Ephemeroptera Ephemerellidae Ephemerella needhami no locality data 2Ephemeroptera Ephemerellidae Ephemerella rotunda Salmon Creek, New York 3/23/1930Ephemeroptera Ephemerellidae Ephemerella rotunda Cascadilla Creek, Ithaca, New York 6/11/1930 maleEphemeroptera Ephemerellidae Ephemerella rotunda Etna, New York 5/30/1930 maleEphemeroptera Ephemerellidae Ephemerella rotunda Spencer, New York 4/6/1926 2 female, nymphEphemeroptera Ephemerellidae Ephemerella rotunda Spencer, New York 4/30/1927 P.R. NeedhamEphemeroptera Ephemerellidae Ephemerella rotunda Spencer, New York 5/7/1927 femaleEphemeroptera Ephemerellidae Ephemerella rotunda Holland, ? 5/8/1916 femaleEphemeroptera Ephemerellidae Ephemerella rotunda Gloversville, New York 4/28/1927 femaleEphemeroptera Ephemerellidae Ephemerella rotunda Fall Creek, Ithaca, New York 4/18/1930 femaleEphemeroptera Ephemerellidae Ephemerella rotunda Tarbell, New York 6/10/1924 nymph, mouthpartsEphemeroptera Ephemerellidae Ephemerella rotunda Scotts Creek, North Carolina 4/8/1930 J.S. Gutsell 2 nymph, head, mouthparts, legsEphemeroptera Ephemerellidae Ephemerella rotunda Cascadilla Creek, Ithaca, New York 3/16/1930Ephemeroptera Ephemerellidae Ephemerella rotunda Harford Brook, New York 5/16/1930 male, nymph, subimago, imagoEphemeroptera Ephemerellidae Ephemerella rotunda North Lansing, New York June 1926 male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella rotunda Fish Hatchery, Cascadilla Creek, Ithaca, New York 6/12/1932 Sadler male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella rotunda Black Brook, Clinton County, New York 6/10/1933 C.R. Crosby + H. Dietrich male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella rotunda no locality data 3Ephemeroptera Ephemerellidae Ephemerella rotunda no locality data 5/18/1927 P.R. Needham 2 maleEphemeroptera Ephemerellidae Ephemerella rotunda no locality data 5/16/1930 maleEphemeroptera Ephemerellidae Ephemerella rotunda no locality data 5/27-31/1930 A.L. Steger female + male, imagines, genitalia, 10th sterniteEphemeroptera Ephemerellidae Ephemerella septentrionalis Valle Crucis, North Carolina 5/27/1936 J.R. Traver male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella septentrionalis Harford Brook, New York 5/21/1930 A.L. Steger 5 female + male, imagines, body parts, nymph sloughEphemeroptera Ephemerellidae Ephemerella septentrionalis no locality data maleEphemeroptera Ephemerellidae Ephemerella serrata Ithaca, New York 3 female + maleEphemeroptera Ephemerellidae Ephemerella serrata Fall Creek, Ithaca, New York 9/2/1925Ephemeroptera Ephemerellidae Ephemerella serrata Laurel River, North Carolina 6/29/1930 female, nymph, head, mouthparts, legs

Ephemeroptera Ephemerellidae Ephemerella serrata Wayah Creek, North Carolina 7/27/1930 nymph, head, mouthparts, legsEphemeroptera Ephemerellidae Ephemerella serrata Sheffield, Massachusetts 7/2/1910 male, genitaliaEphemeroptera Ephemerellidae Ephemerella serrata Elk Garden, Mineral County, West Virginia 8/21/1930 3Ephemeroptera Ephemerellidae Ephemerella serratoides Ocona Lufty River, North Carolina 7/28/1930 3 nymph, head, mouthparts, legsEphemeroptera Ephemerellidae Ephemerella serratoides Capon River, West Virginia 8/13/1930Ephemeroptera Ephemerellidae Ephemerella serratoides Hancock, New York 8/3/1936 H.K. Townes male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella simplex Ocona Lufty River, North Carolina 6/22/1930 2 nymph, entire, head, mouthparts, legsEphemeroptera Ephemerellidae Ephemerella simplex Cascades Point, Quebec, Canada 7/3/1930 G.S. Walley 2 male, nymph, head, mouthparts, legsEphemeroptera Ephemerellidae Ephemerella simplex Afterglow, near Fairhaven, New York 7/22/1934 J.G. Needham male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella sordida Knowlton, Quebec, Canada 7/5-9/1929 G.S. Walley male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella temporalis Liberty Lake, North Carolina 4/28/1929 3 male, imago, genitalia, legs, wing, nymph, head, mouthpart Ephemeroptera Ephemerellidae Ephemerella temporalis Spencer Lake, ? 6/5/1930Ephemeroptera Ephemerellidae Ephemerella temporalis Bass Creek, Nipissing Lake, Ontario, Canada 6/15/1929 male, genitaliaEphemeroptera Ephemerellidae Ephemerella temporalis Old Forge, New York 7/1-3/1905Ephemeroptera Ephemerellidae Ephemerella temporalis Old Forge, New York 7/9/1905 male, subimagoEphemeroptera Ephemerellidae Ephemerella teresa San Antonio Canyon, California 5/29/1923 T.M. R. 3Ephemeroptera Ephemerellidae Ephemerella tibialis San Gabriel Mts., California 6/5/1932 C.D. Michener male, imago, genitalia, legsEphemeroptera Ephemerellidae Ephemerella tibialis Power station, ?, Wyoming 7/28/1929 E.B. KlotsEphemeroptera Ephemerellidae Ephemerella tuberculata Knowlton, Quebec, Canada 7/5/1929 J. McDunnough nymph, head, legsEphemeroptera Ephemerellidae Ephemerella unicornis no locality data 2Ephemeroptera Ephemerellidae Ephemerella vernalis Hamburg Lake, North Carolina 2/24/1930 3 nymph, head, mouthparts, legsEphemeroptera Ephemerellidae Ephemerella vernalis Hamburg Lake, North Carolina 3/15-18/1930 3 female + male, body parts, nymph sloughEphemeroptera Ephemerellidae Ephemerella vernalis Big Alamance Creek, North Carolina 7/2/1930 nymph sloughEphemeroptera Ephemerellidae Ephemerella vernalis Big Alamance Creek, North Carolina 3/27/1930 female, imago, 10th sternite, male, imago, genitaliaEphemeroptera Ephemerellidae Ephemerella vernalis Big Alamance Creek, Toms Place, North Carolina 3/24/1930 male, imago, wingsEphemeroptera Ephemerellidae Ephemerella vernalis Big Alamance Creek, Toms Place, North Carolina 3/23/1930 nymph, mouthparts, legsEphemeroptera Ephemerellidae Ephemerella wayah Wayah Creek, North Carolina 7/27/1930 2 nymph, head, legs, mouthpartsEphemeroptera Ephemerellidae Ephemerella wayah Wayah Creek, North Carolina 7/1/1929Ephemeroptera Ephemerellidae Ephemerella wayah Allens Creek, Waynesville, North Carolina 7/15/1929 3 female, subimago, forewing, male, nymph, genitalia, nymph Ephemeroptera Ephemerellidae Ephemerella wayah no locality data 7/1/1929Ephemeroptera Ephemerellidae Ephemerella sp Santa Fe, New Mexico 4/3/1904Ephemeroptera Ephemerellidae Ephemerella sp Yakima, Washington 7/23/1928 M.D. Leonard male, subimago, genitaliaEphemeroptera Ephemerellidae Ephemerella sp Logan River, Utah 6/23-26/1926 J.G. Needham male, subimago, genitaliaEphemeroptera Ephemerellidae Ephemerella sp Hangehow, ? 5/15/1928Ephemeroptera Ephemerellidae Ephemerella sp Ogden Canyon, Utah 7/27/1926Ephemeroptera Ephemerellidae Ephemerella sp Uhavia River, North Carolina 4/12/1929 nymph, mouthpartsEphemeroptera Ephemerellidae Ephemerella sp Yellowstone Lake, Wyoming P.R. Needham maleEphemeroptera Ephemerellidae Ephemerella sp Yellowstone National Park, Tower Creek, Wyoming 9/1/1921 Muttkowski male, subimago, genitaliaEphemeroptera Ephemerellidae Ephemerella sp Stanford University, California male, subimago, genitaliaEphemeroptera Ephemerellidae Ephemerella sp Greenville, South Carolina 4/22/1932 H.K. Townes female, subimago, wingsEphemeroptera Ephemerellidae Ephemerella sp Waddell Creek, California 5/20/1933 P.R. Needham male, subimago, wingsEphemeroptera Ephemerellidae Ephemerella sp San Dimas Canyon, California January 1923Ephemeroptera Ephemerellidae Ephemerella sp Twenty Mile Creek, Great Smoky Mts. National Park, ? 4/3/1934 J.G. Needham 2 nymph, entire, genitalia, sloughEphemeroptera Ephemerellidae Ephemerella sp Elkhari ?, India 4/15/1902 maleEphemeroptera Ephemerellidae Ephemerella sp Doon River ?, Scotland, United Kingdom 8/27/1927Ephemeroptera Ephemerellidae Ephemerella sp no locality data 3Ephemeroptera Ephemeridae Eatonica schoutedeni Faradie, Congo, tropical Africa ?, Congo Basin ? 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Ephemera blanda Swannanoa River, North Carolina 6/30/1930 3 male, imago, genitalia, wings, nymph, head, mouthparts, legEphemeroptera Ephemeridae Ephemera blanda Rocky Broad River, North Carolina 7/5/1930 2 nymph, head, mouthparts, legsEphemeroptera Ephemeridae Ephemera blanda Davidson River, North Carolina 7/18/1930 nymph, head, mouthparts, legsEphemeroptera Ephemeridae Ephemera blanda no locality data P.W. Fattig male, imago, genitalia, legsEphemeroptera Ephemeridae Ephemera decora Walker no locality data wingEphemeroptera Ephemeridae Ephemera guttulata McLean, New York 5/31/1922 male, imago, genitaliaEphemeroptera Ephemeridae Ephemera guttulata Sphaerium Brook, McLean, New York ?/9/1924 wingsEphemeroptera Ephemeridae Ephemera simulans Taughannock State Park, New York 7/7/1931 male, imago, wingsEphemeroptera Ephemeridae Ephemera simulans Yellow Bay, Montana 8/13/1932 R.T. Young male, imago, wingsEphemeroptera Ephemeridae Ephemera simulans Polson, Montana 8/5/1910 R.T. Young male, imago, genitaliaEphemeroptera Ephemeridae Ephemera simulans Lake Ontario, New York 2Ephemeroptera Ephemeridae Ephemera simulans Walnut Creek, Michigan 7/29/1906 wingsEphemeroptera Ephemeridae Ephemera simulans Walnut Creek, Michigan 2Ephemeroptera Ephemeridae Ephemera simulans New York 6/28/1920 maleEphemeroptera Ephemeridae Ephemera simulans no locality data 5/29/1906 maleEphemeroptera Ephemeridae Ephemera simulans locality not readable 5/30/1905 wingsEphemeroptera Ephemeridae Ephemera simulans no locality data 7/16/1906 2Ephemeroptera Ephemeridae Ephemera triplex Fairmount, West Virginia 8/3/1931 P.N. Musgrave 2 male, imago, wings, subimago, genitalia, legs

Ephemeroptera Ephemeridae Ephemera triplex Marlinton, West Virginia 7/30/1930 J.G. Needham 2 male, imago, genitalia, wingsEphemeroptera Ephemeridae Ephemera triplex Smoke Hole, West Virginia 8/7/1930 J.G. Needham male, imago, genitalia, legsEphemeroptera Ephemeridae Ephemera varia Interrale ?, New Hampshire 7/7/1899Ephemeroptera Ephemeridae Ephemera varia Cayuta, New York 6/15/1933 O.R. Smith female, imago, headEphemeroptera Ephemeridae Ephemera varia Ithaca, New York July 1932 C.N. Hardy male, imago, genitaliaEphemeroptera Ephemeridae Ephemera varia Fall Creek, Ithaca, New York 7/10/1931 male, imago, wingsEphemeroptera Ephemeridae Ephemera varia Three Mile Creek ?, New Hampshire 7/10/1906Ephemeroptera Ephemeridae Ephemera varia locality not readable 6/26/1901Ephemeroptera Ephemeridae Ephemera varians Fall Creek, Ithaca, New York ?/13/1908 2Ephemeroptera Ephemeridae Ephemera varians Saranac Inn, New York 2Ephemeroptera Ephemeridae Ephemera sp Beebe Lake, Ithaca, New York 6/11/1918 H. ErnEphemeroptera Ephemeridae Ephemera sp Yellow Bay, Montana 8/1/1928 R.T. Young female, wingsEphemeroptera Ephemeridae Ephemera sp Flint, Oklahoma 6/8/1934 male, imago, genitaliaEphemeroptera Ephemeridae Ephemera sp Mud Pond, McLean Reserve, New York 7/27/1924 3Ephemeroptera Ephemeridae Ephemera sp Afterglow, Lake Ontario, New York 2Ephemeroptera Ephemeridae Ephemera sp Afterglow, New York 2Ephemeroptera Ephemeridae Ephemera sp Smoke Hole, West Virginia 8/7/1930 J.G. NeedhamEphemeroptera Ephemeridae Ephemera sp Swannanoa River, North Carolina 6/30/1930 male, imago, genitalia, legsEphemeroptera Ephemeridae Ephemera sp M.A.C. ?, Michigan 2 maleEphemeroptera Ephemeridae Ephemera sp locality not readable 8/20/1920Ephemeroptera Ephemeridae Ephemera sp locality not readable 6/26/1901 2 maleEphemeroptera Ephemeridae Ephemera sp Short Island, New York maleEphemeroptera Ephemeridae Ephemera sp no locality data 4Ephemeroptera Ephemeridae Ephemera sp Sleeping Buddha Brook, Beijing, China 10/30/1927 12 nymphsEphemeroptera Ephemeridae Hexagenia affiliata Wakefield, Province Lake, New Hampshire 6/22/1930 P.R. Lowry 2 female + male, imago, wingsEphemeroptera Ephemeridae Hexagenia affiliata no locality data J. McDunnough 4 female + male, imago, wings, genitalia, legs, subanal plateEphemeroptera Ephemeridae Hexagenia affiliata locality not readable genitaliaEphemeroptera Ephemeridae Hexagenia atrocaudata Potomac River, West Virginia 8/9/1930 2 femnale, nymph, mouthparts, antennae, legsEphemeroptera Ephemeridae Hexagenia atrocaudata Howe, Indiana 9/14/1916 F.B. Wiliamson 2 female, imago, wingsEphemeroptera Ephemeridae Hexagenia atrocaudata Beebe Lake, Ithaca, New York 8/30/1929 3 female + male, nymphs, heads, mouthpartsEphemeroptera Ephemeridae Hexagenia atrocaudata Smoke Hole, West Virginia 8/6/1930 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia atrocaudata M.A.C. ?, Michigan 8/16/1910 2 maleEphemeroptera Ephemeridae Hexagenia atrocaudata Potomac River, West Virginia female, nymph, headEphemeroptera Ephemeridae Hexagenia bilineata Knoxville, Tennessee 6/24/1916 G. Ainslee femaleEphemeroptera Ephemeridae Hexagenia bilineata Ann Arbor, Michigan June 1904 maleEphemeroptera Ephemeridae Hexagenia bilineata Fairport, Iowa 2 female + male, nymphsEphemeroptera Ephemeridae Hexagenia bilineata Fairport, Iowa 7/25/1916 maleEphemeroptera Ephemeridae Hexagenia bilineata Andalusia Chute ?, ? femaleEphemeroptera Ephemeridae Hexagenia bilineata Lucedale, ? 6/20/1932 H. Dietrich female, wingsEphemeroptera Ephemeridae Hexagenia bilineata no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia bilineata no locality data 7/25/???? 3 male, imago, genitalia, legs, nymph, mouthpartsEphemeroptera Ephemeridae Hexagenia bilineata no locality data J. McDunnough 2 male, imago, wings, legsEphemeroptera Ephemeridae Hexagenia bilineata no locality data female, wingsEphemeroptera Ephemeridae Hexagenia bilineata no locality data J. McDunnough male, imago, genitaliaEphemeroptera Ephemeridae Hexagenia carolina Hamburg Lake, North Carolina 6/6/1929 7 female + male, imago, genitalia, subanal plate, wings, legsEphemeroptera Ephemeridae Hexagenia carolina Hamburg Lake, North Carolina 6/7/1929 3 female + male, nymph, head, mouthparts, sloughEphemeroptera Ephemeridae Hexagenia carolina no locality data P.W. Fattig male, imago, wingsEphemeroptera Ephemeridae Hexagenia elegans Chowan River, North Carolina August 1930 L.E. Brett 4 male, imago, genitalia, wingsEphemeroptera Ephemeridae Hexagenia elegans Chowan River, Winton, North Carolina 8/8/1930 2 female, imago, genitalia, subanal plate, legsEphemeroptera Ephemeridae Hexagenia elegans no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia limbata Paw Paw Lake, Michigan 8/22-25/1903 C.C. Adams 2 female + male, imago, wingsEphemeroptera Ephemeridae Hexagenia limbata Paw Paw Lake, Michigan 8/22/1925 female, imago, legs, subanal plateEphemeroptera Ephemeridae Hexagenia limbata M.A.C. ?, Michigan male, imago, genitalia, legsEphemeroptera Ephemeridae Hexagenia limbata no locality data male, imago, genitalia, legsEphemeroptera Ephemeridae Hexagenia limbata no locality dataEphemeroptera Ephemeridae Hexagenia limbata Michigan male, imago, genitaliaEphemeroptera Ephemeridae Hexagenia limbata M.A.C. ?, Michigan male, imago, genitaliaEphemeroptera Ephemeridae Hexagenia limbata Crown Point, New York 6/14/1927 male, subimago, genitaliaEphemeroptera Ephemeridae Hexagenia marilandica Conocochaegue Park, Maryland 6/3/1925 4 female + male, imago, genitalia, subanal plate, wings, legsEphemeroptera Ephemeridae Hexagenia marilandica Lake Lanier, Tryon, North Carolina 6/13/1936 J.R. Traver female, nymph, head, mouthpartsEphemeroptera Ephemeridae Hexagenia mingo Millwood, West Virginia 6/25/1930 6 female + male, imago, genitalia, wings, legs, subanal plate, Ephemeroptera Ephemeridae Hexagenia munda no locality data P.W. Fattig 3 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia occulta Cedar Point, Ohio July 15 male, imago, genitaliaEphemeroptera Ephemeridae Hexagenia occulta Phoenix, New York 6/14/1919 male, imago, wingsEphemeroptera Ephemeridae Hexagenia occulta Mentor Park, ? 8/19/1928 3 female + male, genitalia, wings, legs

Ephemeroptera Ephemeridae Hexagenia occulta no locality data J. McDunnough 3 female + male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia occulta no locality data J. McDunnough male, imago, genitaliaEphemeroptera Ephemeridae Hexagenia orlando Orlando, Florida 5/20/1927 4 female + male, imago, genitalia, subanal plate, wings, legs, Ephemeroptera Ephemeridae Hexagenia orlando Orlando, Florida June 1926 M.D. Leonard 4 female, imago, wing, body partsEphemeroptera Ephemeridae Hexagenia orlando Orlando, Florida May 27 M.D. Leonard 2Ephemeroptera Ephemeridae Hexagenia orlando Kissimmee, Florida 7/5/1931 P.N. Musgrave male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia orlando Spring Creek, Georgia July 1912 J.C. Bradley male, imago, genitaliaEphemeroptera Ephemeridae Hexagenia pallens Manhattan, Kansas 1932 R.C. Smith male, imago, wingsEphemeroptera Ephemeridae Hexagenia recurrata Michigan Hollow, Ithaca, New York 6/5/1916 female, imago, wingsEphemeroptera Ephemeridae Hexagenia recurrata Freeville, New York 5/28/1918 2 mouthpartsEphemeroptera Ephemeridae Hexagenia recurrata Bear Creek, Freeville, New York 5/25/1917 3 female + male, nymph, head, mouthparts, legsEphemeroptera Ephemeridae Hexagenia recurrata McLean, New York 1916 4 maleEphemeroptera Ephemeridae Hexagenia recurrata Sphaerium Stream, McLean, New York 6/10/1924 2Ephemeroptera Ephemeridae Hexagenia recurrata no locality data 6/15/1925 2 maleEphemeroptera Ephemeridae Hexagenia recurrata no locality dataEphemeroptera Ephemeridae Hexagenia rigida M.A.C. ?, Michigan 3 male, imago, wings, legsEphemeroptera Ephemeridae Hexagenia rigida M.A.C. ?, Michigan male, imago, genitaliaEphemeroptera Ephemeridae Hexagenia rigida no locality data J. McDunnough 3 female + male, imagines, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia rigida Crown Point, New York 6/14/1927 male, subimago, genitalia, legsEphemeroptera Ephemeridae Hexagenia rosacea Penrose, North Carolina 7/14/1930 2 male, imago, wings, legsEphemeroptera Ephemeridae Hexagenia variabilis no locality data maleEphemeroptera Ephemeridae Hexagenia variabilis Andalusia Chute ?, ? nymphEphemeroptera Ephemeridae Hexagenia variabilis no locality data legs, 7th sternumEphemeroptera Ephemeridae Hexagenia venusta Lawrence, Kansas 6/25/1919 3 fenmale, imago, wings, male, subimago, genitalia, legsEphemeroptera Ephemeridae Hexagenia venusta Lawrence, Kansas 7/28/1919 female, imago, wingsEphemeroptera Ephemeridae Hexagenia venusta Decator Lake, Illinois 8/5/1926 2 maleEphemeroptera Ephemeridae Hexagenia venusta College Station, Texas 10/5/1928 female, imago, wingsEphemeroptera Ephemeridae Hexagenia viridescens no locality data J. McDunnough 3 female + male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia weewa Chipola Lake, Florida 4/8/1927 5 female + male, imago, genitalia, subanal plate, wings, legs, Ephemeroptera Ephemeridae Hexagenia sp Walnut Lake, Michgan June 1906Ephemeroptera Ephemeridae Hexagenia sp Walnut Lake, Michgan July 1906 4Ephemeroptera Ephemeridae Hexagenia sp Walnut Lake, Michgan 8/13/1906 3 female + male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp Franklin, North Carolina 6/27/1929 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp Franklin, North Carolina 7/3/1929 female, imago, subanal plate, legsEphemeroptera Ephemeridae Hexagenia sp Alcona County, Michigan 8/25/1925 3 female + male, nymph, head, legsEphemeroptera Ephemeridae Hexagenia sp Wheeling, West Virginia 6/14/1930 2 female, nymph, head, mouthparts, legsEphemeroptera Ephemeridae Hexagenia sp Pacolet River, North Carolina 7/14/1930 2 female, nymph, mouthparts, legsEphemeroptera Ephemeridae Hexagenia sp Torreya, Liberty County, Florida 4/12/1930 4 female, nymph, head, moutharts, legsEphemeroptera Ephemeridae Hexagenia sp Gainesville, Florida 2/21/1930 C.L. Byers 2 female, nymph, head, mouthparts, legsEphemeroptera Ephemeridae Hexagenia sp Gainesville, Florida 2/22/1930 C.L. Byers 2 female, nymph, head, mouthparts, legsEphemeroptera Ephemeridae Hexagenia sp Tuckaseegee River, Jackson, North Carolina 8/25/1930 J.S. Gutsell 4 male, subimago, genitalia, legs, female, nymph, head, mout Ephemeroptera Ephemeridae Hexagenia sp Douglas Lake, Michigan 1926 3 male, imago, subimago, genitalia, wins, legsEphemeroptera Ephemeridae Hexagenia sp Buffalo, New York 7/24/1906Ephemeroptera Ephemeridae Hexagenia sp Knoxville, Tennessee 6/21/1916 G. AinsleeEphemeroptera Ephemeridae Hexagenia sp Knoxville, Tennessee 7/1/1916 G. AinsleeEphemeroptera Ephemeridae Hexagenia sp Detroit, Michigan 2Ephemeroptera Ephemeridae Hexagenia sp Detroit, Michigan 6/25/1906 subimago, wingsEphemeroptera Ephemeridae Hexagenia sp Paw Paw Lake, Michigan 8/22-25/1903 C.C. Adams 2 female, imago, wings, male, imago, genitalia, subimago, legEphemeroptera Ephemeridae Hexagenia sp Denton ?, Texas 2 male, imago, subimagoEphemeroptera Ephemeridae Hexagenia sp Andalusia Chute ?, ?Ephemeroptera Ephemeridae Hexagenia sp Ann Arbor, MichiganEphemeroptera Ephemeridae Hexagenia sp Cross Lake, Minnesota 6/26/1931 D. Dunavan male, imago, genitalia, legsEphemeroptera Ephemeridae Hexagenia sp Crown Point, New York 6/14/1927 2 female, subimago, wingsEphemeroptera Ephemeridae Hexagenia sp Phoenix, New York 6/14/1919 male, imago, genitalia, legsEphemeroptera Ephemeridae Hexagenia sp Toccoa ?, GeorgiaEphemeroptera Ephemeridae Hexagenia sp Manhattan, Kansas 1915 female, nymph, mouthpartsEphemeroptera Ephemeridae Hexagenia sp Province Lake, Wakefield, New Hampshire 6/22/1930 P.R. Lowry male, imago, genitalia, legsEphemeroptera Ephemeridae Hexagenia sp Rock Creek Park, Nebraska 7/25/1931 female, wingsEphemeroptera Ephemeridae Hexagenia sp Lawrence, Kansas 6/25/1919 male, subimago, wingsEphemeroptera Ephemeridae Hexagenia sp Cooley Creek, Alabama 7/4/1936 J.R. Traver nymph, head, mouthpartsEphemeroptera Ephemeridae Hexagenia sp Ripley, West Virginia 6/25/1930 male, subimago, wingsEphemeroptera Ephemeridae Hexagenia sp Fall Creek, Ithaca, New York 7/14/1901 maleEphemeroptera Ephemeridae Hexagenia sp Hamilton, Illinois 7/12/1916 maleEphemeroptera Ephemeridae Hexagenia sp Potomac River, West Virginia 7/10/1926 maleEphemeroptera Ephemeridae Hexagenia sp Colo River ?, ? May 1933 female, wings

Ephemeroptera Ephemeridae Hexagenia sp Fairport, Iowa female + male, nymphEphemeroptera Ephemeridae Hexagenia sp Passadum Bog ?, Maine 6/12/1933 A.E. Brower female, wingsEphemeroptera Ephemeridae Hexagenia sp Toc River, North Carolina 7/11/1930 female, nymphEphemeroptera Ephemeridae Hexagenia sp locality not readable 6/8/1930 female, wingsEphemeroptera Ephemeridae Hexagenia sp no locality data P.W. Fattig male, imago, genitalia, legsEphemeroptera Ephemeridae Hexagenia sp no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp no locality data P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Ephemeridae Hexagenia sp no locality data 2 nymph, head, legs, gillsEphemeroptera Ephemeridae Hexagenia sp no locality data nymph, head, legsEphemeroptera Ephemeridae Hexagenia sp no locality data nymph, head, mouthpartsEphemeroptera Ephemeridae Hexagenia sp no locality data 6/7/1929 legsEphemeroptera Ephemeridae Hexagenia sp no locality data 4/28/1893 gillsEphemeroptera Ephemeridae Hexagenia sp no locality data 5Ephemeroptera Ephemeridae Hexagenia sp no locality data spiracleEphemeroptera Ephemeridae Hexagenia sp no locality data 8/21/1920Ephemeroptera Ephemeridae Hexagenia sp several localities 5Ephemeroptera Ephemeridae Hexagenia sp Michigan male, imago, genitaliaEphemeroptera Ephemeridae Hexagenia sp Toe River, North Carolina female, nymph, headEphemeroptera Ephemeridae Hexagenia sp Fairport, Iowa J. McDunnough male, imago, genitaliaEphemeroptera Ephemeridae Ichthybotus hudsoni ? New ZealandEphemeroptera Euthyplociidae Campylocia ampla Tumatumari, Potaro River, British Guiana 6/28/1927 CU Entomological Expedition female, imago, wingsEphemeroptera Euthyplociidae Campylocia anceps Tumatumari, Potaro River, British Guiana 6/29/1927 CU Entomological Expedition 2 male, imago, genitalia, wingsEphemeroptera Euthyplociidae Campylocia anceps Para ?, Brazil ? 1/25/1912 2 wings, legsEphemeroptera Euthyplociidae Campylocia anceps British Guiana 3 maleEphemeroptera Euthyplociidae Campylocia sp Columbia 2Ephemeroptera Euthyplociidae Euthyplocia hecuba ? Camino del Pichis ?, Peru 7/4/1920 3Ephemeroptera Euthyplociidae Euthyplocia qualami ? no locality data January 1905 E.B. Williamson 2Ephemeroptera Euthyplociidae Euthyplocia sp Columbia 1917 E.B. WilliamsonEphemeroptera Euthyplociidae Euthyplocia sp British GuianaEphemeroptera Heptageniidae Anepeorus rusticus Uinta County, Utah 7/13/1902 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Anepeorus simplex Chattahoochee River, Atlanta, Georgia 6/7/1932 P.W. Fattig 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Arthroplea bipunctata Nipissing Lake, Ontario, Canada 6/20/1929 F.P. Ide 5 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Cinygma dimicki Corvallis, Oregon 5/31/1931 H.A. Scullen male, imago, genitalia, legsEphemeroptera Heptageniidae Cinygma integrum Corvallis, Oregon 5/31/1931 H.A. Scullen male, imago, wingsEphemeroptera Heptageniidae Cinygma integrum no locality data 4 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Cinygma sp Lake Tahoe, California September 1930 V. Knox nymph, mouthpartsEphemeroptera Heptageniidae Cinygmula atlantica Valle Crucis, North Carolina 5/27/1936 J.R. Traver 2 female, nymph slough, male, nymph, genitaliaEphemeroptera Heptageniidae Cinygmula atlantica Valle Crucis, North Carolina 5/30/1936 J.R. Traver 3 male, nymph, genitalia, gillsEphemeroptera Heptageniidae Cinygmula atlantica Slaterville, New York 5/29/1932 J.R. Traver 3 male, imago, genitalia, wings, legs, nymph sloughEphemeroptera Heptageniidae Cinygmula atlantica Slaterville, New York 5/30/1934 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Cinygmula gartrelli Waddell Creek, Swanton, California 4/4/1933 P.R. Needham 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Cinygmula mimus St. Marys Lake, Glacier National Park, Montana 7/2/1932 A.S. Hazzard male, imago, genitaliaEphemeroptera Heptageniidae Cinygmula mimus St. Marys Lake, Glacier National Park, Montana 7/9/1932 A.S. Hazzard 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Cinygmula mimus Two Medicine Lake, Glacier National Park, Montana 6/25/1932 A.S. Hazzard 3 male, imago, genitalia, wingsEphemeroptera Heptageniidae Cinygmula mimus Glacier National Park, Montana A.S. Hazzard 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Cinygmula mimus Glacier National Park, Montana 7/2/1932 male, imago, genitalia, legsEphemeroptera Heptageniidae Cinygmula mimus Glacier National Park, Montana 6/25/1932 male, imago, genitalia, legsEphemeroptera Heptageniidae Cinygmula mimus Moose, Wyoming 8/3/1929 E.B. Klots 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Cinygmula mimus Spring Creek, Wyoming July 17 E.B. Klots male, imago, genitaliaEphemeroptera Heptageniidae Cinygmula mimus Lake Tahoe, California 6/23/1927 E.H. Nast 2 male, imago, genitaliaEphemeroptera Heptageniidae Cinygmula mimus Logan River, Utah 6/22/1926 4 male, imago, genitalia, legsEphemeroptera Heptageniidae Cinygmula mimus Logan River, Utah 6/28/1926 4 wings, body partsEphemeroptera Heptageniidae Cinygmula mimus Logan River, Utah 6/21/1926Ephemeroptera Heptageniidae Cinygmula mimus Logan River, Utah 6/28-30/1926Ephemeroptera Heptageniidae Cinygmula mimus Logan Canyon, Utah 7/12/1922 J.G. Needham 2 male, entire subimago, imago, genitalia, legsEphemeroptera Heptageniidae Cinygmula mimus no locality data

Ephemeroptera Heptageniidae Cinygmula par Colorado G.S. Dodds 2 male, imago, genitalia, legsEphemeroptera Heptageniidae Cinygmula ramaleyi Park Creek, Glacier National Park, Montana 8/26/1933 R.T. Young male, imago, genitaliaEphemeroptera Heptageniidae Cinygmula ramaleyi Glacier Natioanl Park, Montana 8/29/1932 R.T. Young male, imago, genitalia, legsEphemeroptera Heptageniidae Cinygmula ramaleyi Colorado G.S. Dodds 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Cinygmula reticulata Corvallis, Oregon 5/31/1931 D.K. F. male, imago, genitalia, legsEphemeroptera Heptageniidae Cinygmula sp Lake Tahoe, California 6/23/1927 E.H. Nast 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Cinygmula sp San Bernardino Mts., California C.D. Michener 4 nymph, entire, head, mouthparts, legs, gillsEphemeroptera Heptageniidae Cinygmula sp Logan River, riffles, Utah 7/17/1926 J.G. Needham 2 nymph, head, mouthparts, legsEphemeroptera Heptageniidae Cinygmula sp Logan River, riffles, Utah 7/19/1926 2Ephemeroptera Heptageniidae Cinygmula sp Glacier National Park, Montana 6/9/1932 A.S. Hazzard nymph, body partsEphemeroptera Heptageniidae Cinygmula sp Maligne Lake, Alberta, Canada 7/4/1915 J.C. Bradley male, imago, genitaliaEphemeroptera Heptageniidae Ecdyonurus fusca Hell Creek, Pigeon River, West Virginia 6/7/1930 J.G. Needham 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus fusca Paine Creek, near Indian Pt., Ohio 8/19/1929 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus fusca Bear Gully, Lake County, Ohio 8/26/1929 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus fusca no locality data 2 wingsEphemeroptera Ecdyonuridae Ecdyonurus venosus Brecknock, Wales, United Kingdom M.E. Moseley 3 male, imago, genitalia, wings, legsEphemeroptera Ecdyonuridae Ecdyonurus venosus no locality data 2 nymph, mouthparts, head, legsEphemeroptera Heptageniidae Ecdyonurus sp Pacolet River, Tryon, North Carolina 7/14/1930 J.R. Traver 2 nymph, mouthparts, legsEphemeroptera Heptageniidae Ecdyonurus sp Ogdensburg, New York 8/14/1906 C. Betten male, imago, genitalia, legsEphemeroptera Heptageniidae Ecdyonurus sp Greenville, South Carolina 5/10/1931 H.K. Townes male, imago, genitalia, legsEphemeroptera Heptageniidae Ecdyonurus sp no locality dataEphemeroptera Heptageniidae Ecdyonurus sp Vineland, New Jersey 8/6/1931 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus sp Lake Forest, Illinois 7/30/1903 J.G. Needham 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus sp Chagrin River, near Fowler Mills, Ohio 9/3/1929 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus sp Black Lake, New York 8/23/1931 4 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus sp Black Lake, New York 8/6/1931 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus sp Fairmount, West Virginia 8/1/1931 P.N. Musgrave 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus sp Chicago, Illinois 7/25/1926 P.S. Chapman male, imago, genitalia, legsEphemeroptera Heptageniidae Ecdyonurus sp Wardensville, West Virginia 7/21/1931 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus sp Rockford College, Illinois 6/1/1930 R. M. 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus sp Potomac River, near Harpers Ferry, Maryland 8/3/1920 V. Argo 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus sp Potomac River, West Virginia 8/8/1930 male, imago, genitalia, legsEphemeroptera Heptageniidae Ecdyonurus sp Beaver Creek, near Fowler Mills, Ohio 8/25/1929 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus sp Beaver Creek, near Fowler Mills, Ohio 8/30/1929 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ecdyonurus sp Buffalo, New York 6/26/1906 male, imago, genitalia, legsEphemeroptera Heptageniidae Ecdyonurus sp Chickmanuga Creek, near Ringgold, Georgia 7/24/1931 P.W. Fattig male, imago, genitalia, legsEphemeroptera Heptageniidae Ecdyonurus sp Fairhaven, New York July 4 J.G. Needham male, imago, genitalia, legsEphemeroptera Heptageniidae Ecdyonurus sp Smoke Hole, West Virginia 8/6/1930 male, subimago, genitalia, legsEphemeroptera Heptageniidae Ecdyonurus sp Hull, Quebec, Canada 6/19-23/1916 male, imago, genitalia, legsEphemeroptera Heptageniidae Ecdyonurus sp Hell Creek, Pigeon River, West Virginia 7/7/1930 J.G. Needham male, imago, genitaliaEphemeroptera Heptageniidae Ecdyonurus sp no locality data 7/26/1906 L.M. Brock male, imago, genitalia, legsEphemeroptera Heptageniidae Ecdyonurus sp no locality data male, imago, genitalia, legsEphemeroptera Heptageniidae Ecdyonurus sp no locality data 4/26/1893 gillsEphemeroptera Heptageniidae Ecdyonurus sp Gardiner River ?, ? 8/4/1921Ephemeroptera Ecdyonuridae Ecdyonurus sp Dou River ?, Scotland, United Kingdom 8/27/1927Ephemeroptera Heptageniidae Epeorus grandis Marble Fk., California July 1904 J.C. Bradley nymph, mouthpartsEphemeroptera Heptageniidae Epeorus grandis Marble Fk., California 7/24/1907 J.C. Bradley nymph, body partsEphemeroptera Heptageniidae Epeorus grandis Marble Fk., California J.C. Bradley 2 nymph, head, mouthparts, legsEphemeroptera Heptageniidae Epeorus sp Peoa, Utah 7/28/1926 2Ephemeroptera Heptageniidae Epeorus sp no locality data 4/26/1893 E.R. F. gillsEphemeroptera Heptageniidae Epeorus sp no locality data 5/12/1929 2 nymph, mouthparts, legs, gillsEphemeroptera Heptageniidae Epeorus sp no locality data 6/28/1929 nymph, mouthparts, legsEphemeroptera Heptageniidae Heptagenia aphrodite Caraway Creek, Sophia, North Carolina 5/24/1930 3 male, imago, genitalia, wings, legs, nymph sloughEphemeroptera Heptageniidae Heptagenia aphrodite Caraway Creek, Sophia, North Carolina 4/15/1930 male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia aphrodite Ringold or Swamp Creek, Georgia 7/24 or 6/7/1931 P.W. Fattig 2 male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia aphrodite Catocton Creek, Maryland 6/19/1926 V. Argo 3 nymph, entire, head, mouthparts, legsEphemeroptera Heptageniidae Heptagenia aphrodite Swannanoa River, North Carolina 6/30/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia aphrodite Waynesville, North Carolina 7/17/1929 male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia aphrodite Smoke Hole, Potomac River, West Virginia 8/6/1930 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia criddlei Waterton Lakes, Alberta, Canada J.H. Pepper male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia criddlei Colorado E.G. Oslar 2 male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia criddlei Flathead Lake, Montana 8/23/1932 R.T. Young male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia criddlei Kintla Lake, Glacier National Park, Montana 8/18/1933 R.T. Young male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia cruentata Lincoln, Nebraska 7/15/1933 D.B. Whelan male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia dolosa Chattahoochee River, Atlanta, Georgia 7/4-10/1931 P.W. Fattig 2 male, imago, genitalia, legs

Ephemeroptera Heptageniidae Heptagenia elegantula Manhattan, Kansas October 1933 R.C. Smith 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia elegantula Lincoln, Nebraska 5/31/1933 D.B. Whelan male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia elegantula Denver, Colorado June 10 male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia elegantula Colorado E.G. Oslar male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia elegantula Logan River, mouth, Utah 7/1-2/1926 3Ephemeroptera Heptageniidae Heptagenia elegantula Logan River, riffles, Utah 7/19/1926 2Ephemeroptera Heptageniidae Heptagenia elegantula Logan River, Utah 2Ephemeroptera Heptageniidae Heptagenia flavescens College Station, Texas 5/14/1931 V.A. Little 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia flavescens Oregon, Illinois July 9 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia flavescens Chattahoochee River, Atlanta, Georgia 6/7/1932 P.W. Fattig male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia flavescens Manhattan, Kansas October 1933 R.C. Smith male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia flavescens Fairport, Iowa July 1916Ephemeroptera Heptageniidae Heptagenia flavescens Knoxville, Tennessee 5/27/1919Ephemeroptera Heptageniidae Heptagenia flavescens Ithaca, New York maleEphemeroptera Heptageniidae Heptagenia hebe Worrell Creek, Lake County, Ohio 8/13/1929 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia hebe Kent Falls, Connecticut 6/2/1931 C.P. Alexander male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia hebe Leroy, Ohio 8/10/1933 J.R. Traver male, imago, genitalia, nymph sloughEphemeroptera Heptageniidae Heptagenia hebe Paine Creek, Leroy, Ohio 8/7/1933 J.R. Traver male, imago, genitalia, nymph sloughEphemeroptera Heptageniidae Heptagenia hebe Fish Hatchery, Cascadilla Creek, Ithaca, New York 7/16/1931 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia hebe Fall Creek, Varna, New York 7/3/1931 male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia hebe Fall Creek, Varna, New York 6/5/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia hebe Potomac River, West Virginia 8/6/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia hebe Wilseyville, New York 6/12/1933 J.R. Traver nymph sloughEphemeroptera Heptageniidae Heptagenia hebe Port Elgin, Lake Huron, Ontario, Canada 6/28/1933 E. George male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia hebe St. Regis River, Hopkinton, New York 9/3/1931 L. Harper male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia hebe Penitentiary Gully Creek Kirtland, Ohio 8/15/1929 male, subimago, genitalia, legsEphemeroptera Heptageniidae Heptagenia hebe no locality data wingsEphemeroptera Heptageniidae Heptagenia inconspicua Corning, New York 9/14/1925 R. Chapman + C.R. Crosby male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia inconspicua Treesbank, Man ? 7/16/1924 J. Criddle male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia interpunctata Ithaca, New York maleEphemeroptera Heptageniidae Heptagenia interpunctata locality not readable maleEphemeroptera Heptageniidae Heptagenia julia Rocky Broad River, Bat Cave, North Carolina 6/17/1929 J.R. Traver 2 nymph, head, mouthparts, legsEphemeroptera Heptageniidae Heptagenia julia Rocky Broad River, Lecky Gap, North Carolina 7/2/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia julia Rocky Broad River, Lecky Gap, North Carolina 7/6/1930 nymph sloughEphemeroptera Heptageniidae Heptagenia julia Swannanoa River, North Carolina 7/3/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia julia Smoke Hole, West Virginia 8/8-9/1930 male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia julia Allens Creek, North Carolina 7/26/1929 nymph, entireEphemeroptera Heptageniidae Heptagenia juno Valle Crucis, North Carolina 6/5/1936 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia juno Carter Creek, Newfield, New York 6/27/1933 J.R. Traver 4 male, imago, genitalia, wings, legs, nymph sloughEphemeroptera Heptageniidae Heptagenia juno Davidson River, Pisgah Forest, North Carolina 6/21/1936 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia juno Slaterville, Flower Preserve, New York 7/6/1927 P.R. Needham male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia lucidipennis Bear Gully, Willoughby, Ohio 6/17/1931 J.R. Traver 4 male, imago, genitalia, legs, nymph, head, mouthparts, legs Ephemeroptera Heptageniidae Heptagenia lucidipennis Bear Gully, Willoughby, Ohio 6/19/1931 2 male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia lucidipennis Danby, New York 5/26-27/1933 R.C. Tacker 2 male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia lucidipennis Ithaca, New York July 1931 C.N. Hardy male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia lucidipennis Port Elgin, Lake Huron, Ontario, Canada 7/28/1933 E.G. Grieve male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia lucidipennis Ringwood, New York 6/22/1933 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia lucidipennis Frederick, Maryland 5/21/1936 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia maculipennis Chagrin River, Pleasant Valley, Ohio 8/25/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia maculipennis Pleasant Valley, near Willoughby, Ohio 8/25/1930 J.R. Traver 2 nymph, head, mouthparts, legs, gillsEphemeroptera Heptageniidae Heptagenia maculipennis Worrell Creek, near Willoughby, Ohio 8/1/1929 J.R. Traver nymph sloughEphemeroptera Heptageniidae Heptagenia maculipennis Worrell Creek, Lake County, Ohio 8/1/1929 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia maculipennis Knoxville, Tennessee 5/27/1919 W.B. C. 2 female + maleEphemeroptera Heptageniidae Heptagenia maculipennis Ithaca, New York 7/17-22/1919 3 maleEphemeroptera Heptageniidae Heptagenia maculipennis Hannibal, Missouri 6/26/1933 W.D. Sargent male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia marginalis Spring Creek, near Hot Springs, North Carolina 7/17/1930 J.R. Traver 2 nymph, head, mouthparts, legsEphemeroptera Heptageniidae Heptagenia marginalis Caraway Creek, North Carolina 5/20/1930 2 male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia marginalis Davidson River, North Carolina 6/20/1930 J.R. Traver nymph, entireEphemeroptera Heptageniidae Heptagenia marginalis St. Regis River, Hopkinton, New York 9/3/1931 L. Harper male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia marginalis Potomac River, West Virginia 8/8/1930 male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia marginalis no locality data genitalia, wingsEphemeroptera Heptageniidae Heptagenia minerva Potomac River, Harpers Ferry, Maryland 8/3/1920 V. Argo 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia minerva New Windsor, Maryland July 1926 V. Argo 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia minerva Corning, New York 9/14/1925 R. Chapman + C.R. Crosby male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia minerva Sheffield, Alabama 7/4/1936 J.R. Traver male, imago, genitalia

Ephemeroptera Heptageniidae Heptagenia persimplex Flint, Oklahoma 6/6/1934 2 male, subimago, genitalia, wingsEphemeroptera Heptageniidae Heptagenia persimplex Hannibal, Missouri 6/26/1933 W.D. Sargent 2 male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia persimplex Lincoln, Nebraska 6/7/1933 D.B. Whelan male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia persimplex Yakima, Washington 7/23/1928 M.D. Leonard male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia persimplex Lewiston, Idaho 7/20/1931 R.E. Rodock male, imago, wingsEphemeroptera Heptageniidae Heptagenia pulla Lake Winnipeg, Manitoba, Canada 7/18/1930 F. Neave male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia pulla St. Regis River, Fort Jackson, New York 8/30/1932 L. Harper male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia pulla Slaterville, New York 9/19/1931 male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia pulla Afterglow, New York 6/15/1924 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia pulla Afterglow, New York 6/18/1924 2 maleEphemeroptera Heptageniidae Heptagenia pulla no locality data 7/25/1905 maleEphemeroptera Heptageniidae Heptagenia pulla no locality data 9 male, imago genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia rodocki Lewiston, Idaho 7/20/1931 R.E. Rodock 5 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia rubroventris San Gabriel Canyon, San Gabriel Mts., California 6/2/1932 C.D. Michener male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia rubroventris San Gabriel Canyon, San Gabriel Mts., California 6/5/1932 C.D. Michener male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia rubroventris Stanford University, California D. Shepherd 5 male, imago, genitalia, legs, nymph, mouthpartsEphemeroptera Heptageniidae Heptagenia rusticalis Enfield Glen, New York 7/17/1931 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia rusticalis Insectary, Ithaca, New York 6/12/1925 J.G. Needham male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia rusticalis Ithaca, New York July 1931 C.N. Hardy male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia rusticalis Fish Hatchery, Ithaca, New York 7/16/1931 male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia rusticalis Taughannock Park, New York 7/7/1931 J.G. Needham male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia rusticalis Willoughby, Ohio 6/23/1934 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia simplicoides Yakima, Washington 7/8/1929 M.D. Leonard 3 male, imago, genitalia, wingsEphemeroptera Heptageniidae Heptagenia simplicoides Yakima, Washington 7/23/1928 M.D. Leonard 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia simplicoides Lethbridge, Alberta, Canada 6/11/1930 J.H. Pepper male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia solitaria Colorado G.S. Dodds 2 male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia solitaria Cutright Creek, Glacier National Park, Montana 8/15/1932 A.S. Hazzard male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia spinosa Swannanoa River, North Carolina 6/30/1930 J.R. Traver 4 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia thetis Cascades, Danbury, North Carolina 5/3/1930 J.R. Traver 2 nymph, head, mouthparts, legsEphemeroptera Heptageniidae Heptagenia thetis Cascades, Danbury, North Carolina 5/4/1930 J.R. Traver 3 male, imago, genitalia, wings, legs, nymph sloughEphemeroptera Heptageniidae Heptagenia townesi Greenville County, near Calahan Mountain, South Car 6/2/1932 H.K. Townes male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia umbratica Knowlton, Quebec, Canada 7/13/1929 J. McDunnough 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Heptagenia walshi Ellis Creek, Ellis, New York 6/18/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia sp Marlinton, West Virginia 7/30/1930 J.G. Needham 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia sp Ocona Lufty River, North Carolina 6/22/1930 J.R. Traver 3 nymph, entire, head, mouthparts, legsEphemeroptera Heptageniidae Heptagenia sp Ithaca, New York 7/17-22/1919 2Ephemeroptera Heptageniidae Heptagenia sp Ithaca, New York P.R. Needham headsEphemeroptera Heptageniidae Heptagenia sp Fairport, Iowa July 1916 maleEphemeroptera Heptageniidae Heptagenia sp Fairport, Iowa 2 nymph, genitalia, mouthparts, legsEphemeroptera Heptageniidae Heptagenia sp Corning, New York 7/8/1924 C.R. Crosby 3 maleEphemeroptera Heptageniidae Heptagenia sp Afterglow, New York 6/18-19/1924 3 maleEphemeroptera Heptageniidae Heptagenia sp Los Angeles River, California 5/4-5/1923 T.M. R. 2Ephemeroptera Heptageniidae Heptagenia sp Sphaerium Brook, McLean, New York 6/22/1924Ephemeroptera Heptageniidae Heptagenia sp Sphaerium Brook, McLean, New York 7/2/1924Ephemeroptera Heptageniidae Heptagenia sp Inlet Brook, McLean, New York 7/12/1924 wingsEphemeroptera Heptageniidae Heptagenia sp McLean, New York 8/7/1924Ephemeroptera Heptageniidae Heptagenia sp Nashoba, Oklahoma 6/15/1934 2 male, subimago, genitaliaEphemeroptera Heptageniidae Heptagenia sp Lapwai, Idaho 5/12/1924 V. Argo 2Ephemeroptera Heptageniidae Heptagenia sp Knoxville, Tennessee 6/26/1916 2 femaleEphemeroptera Heptageniidae Heptagenia sp Yakima, Washington 7/23/1928 M.D. Leonard 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Heptagenia sp New Windsor, Maryland July 1926 V. Argo male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia sp Slaterville, New York 9/19/1931 male, imago, wingsEphemeroptera Heptageniidae Heptagenia sp Austin, Texas June 1931 H.J. Parks Jr. male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia sp Potomac River, West Virginia 8/6/1930 male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia sp Yellow Bay, Montana 7/1/1932 R.T. Young male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia sp Smoke Hole, Potomac River, West Virginia 8/8-9/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Heptagenia sp Canadarago Lake, New York 7/2/1935 H.K. Townes Jr. male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia sp Goat Creek, Ashford, Washington Butter male, imago, genitaliaEphemeroptera Heptageniidae Heptagenia sp M.A.C. ?, Michigan male, imago, genitalia, legsEphemeroptera Heptageniidae Heptagenia sp Wild Cat Creek, Manhattan, Kansas 7/6/1923 2Ephemeroptera Heptageniidae Heptagenia sp Resthaven, near Asheville, North Carolina 10/17/1923 C.R. CrosbyEphemeroptera Heptageniidae Heptagenia sp Waddel Creek, California 8/8-12/1932 P.R. Needham 3 femaleEphemeroptera Heptageniidae Heptagenia sp Goldbeach, Rogue River, Oregon 8/7/1935 P.R. Needham nymph, genitalia, mouthpartsEphemeroptera Heptageniidae Heptagenia sp Stanford University, California March 24 maleEphemeroptera Heptageniidae Heptagenia sp Ithaca, New York 6/13/1924 2 female + male

Ephemeroptera Heptageniidae Heptagenia sp Buffalo, New York 7/14/1906 2Ephemeroptera Heptageniidae Heptagenia sp Super Pine ?, California J.C. Bradley male, wingsEphemeroptera Heptageniidae Heptagenia sp locality not readable 2Ephemeroptera Heptageniidae Heptagenia sp locality not readable 9/1/1904 3Ephemeroptera Heptageniidae Heptagenia sp locality not readable 5/28/1916Ephemeroptera Heptageniidae Heptagenia sp locality not readableEphemeroptera Heptageniidae Heptagenia sp New York 6/26/1905Ephemeroptera Heptageniidae Heptagenia sp locality not readable March 24Ephemeroptera Heptageniidae Heptagenia sp no locality data 7/22/1930 J.R. TraverEphemeroptera Heptageniidae Heptagenia sp Doon River ?, Scotland, United Kingdom 8/27/1927Ephemeroptera Heptageniidae Iron confusus Slaterville, New York 5/20/1932 J.R. Traver 2 male, imago, genitalia, legsEphemeroptera Heptageniidae Iron confusus Slaterville, New York 5/21/1932 J.R. Traver nymph sloughEphemeroptera Heptageniidae Iron confusus Slaterville, New York 5/24/1932 J.R. Traver nymphEphemeroptera Heptageniidae Iron confusus Coys Glen, Ithaca, New York 5/21/1932 J.R. Traver 2 nymph sloughEphemeroptera Heptageniidae Iron confusus Coys Glen, Ithaca, New York 5/23-25/1932 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Iron confusus Heaton, North Carolina 6/3/1936 J.R. Traver 2 nymph, entire, gillsEphemeroptera Heptageniidae Iron confusus Ringwood Creek, Ringwood, New York 6/5/1933 J.R. Traver nymph sloughEphemeroptera Heptageniidae Iron cucumonga ? no locality data 3/30/1923 T.M. R.Ephemeroptera Heptageniidae Iron deceptivus Jocko Valley, Arlec, Montana 11/11/1931 3 male, imago, genitalia, legsEphemeroptera Heptageniidae Iron deceptivus Waterton Lakes, Alberta, Canada 8/25/1928 J. McDunnough male, imago, genitaliaEphemeroptera Heptageniidae Iron deceptivus Tocko Valley, Arlec, Montana 10/11/1931 male, imago, genitalia, legsEphemeroptera Heptageniidae Iron dispar Cathey Creek, Cherryfield, North Carolina 6/25/1936 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Iron dispar Cedar Creek, North Carolina 7/23/1930 J.R. Traver nymph sloughEphemeroptera Heptageniidae Iron dispar Blue Ridge Assembly, Black Mts., North Carolina 6/11/1929 female, imago, wingsEphemeroptera Heptageniidae Iron dispar Blue Ridge Assembly, Black Mts., North Carolina 6/17/1930 J.R. Traver nymph sloughEphemeroptera Heptageniidae Iron dispar Cowee Mt., North Carolina 7/4/1929 female, imago, 9th sternal plate, legsEphemeroptera Heptageniidae Iron dispar Cowee Mt., North Carolina 7/9/1929 3 male, subimago, genitalia, legs, nymph sloughEphemeroptera Heptageniidae Iron dispar Cowee Mt., North Carolina 7/13/1929 female, imago, wingsEphemeroptera Heptageniidae Iron dispar Cowee Mt., North Carolina 7/14/1929 male, imago, genitalia, subimago, legsEphemeroptera Heptageniidae Iron dispar Creek near Hazelwood, North Carolina 7/20/1929 2 female, imago, 9th sternal plate, legsEphemeroptera Heptageniidae Iron dispar Creek near Hazelwood, North Carolina 7/20/1930 male, subimago, genitalia, legsEphemeroptera Heptageniidae Iron dispar Keep Kool Kabins, Penrose, North Carolina 7/11/1930 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Iron dispar no locality data 7/18/1929 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Iron dispar Black Mts., North Carolina June 1912 Beutenmuller female, imago, wingsEphemeroptera Heptageniidae Iron dispar Allens Creek, near Hazelwood, North Carolina 8/24/1929 male, imago, genitalia, legsEphemeroptera Heptageniidae Iron dispar Pigeon River, North Carolina 7/25/1929 J.R. Traver nymph sloughEphemeroptera Heptageniidae Iron fragilis Slaterville, New York 5/20/1931 J.R. Traver 2 male, imago, genitalia, legsEphemeroptera Heptageniidae Iron fragilis Slaterville, New York 5/22/1931 male, imago, genitalia, legsEphemeroptera Heptageniidae Iron fragilis Coys Glen, New York 5/21/1932 J.R. Traver nymph, mouthpartsEphemeroptera Heptageniidae Iron fragilis Coys Glen, Ithaca, New York 5/30/1932 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Iron fragilis Coys Glen, New York May 17 A.H. Morgan nymphEphemeroptera Heptageniidae Iron fragilis Coys Glen, New YorkEphemeroptera Heptageniidae Iron fraudator Slaterville, New York 5/6/1932 J.R. Traver nymph sloughEphemeroptera Heptageniidae Iron fraudator Slaterville, New York 5/8/1931 male, imago, genitalia, legsEphemeroptera Heptageniidae Iron fraudator Slaterville, Flower Preserve, New York 4/16/1931 2 nymph, head, mouthparts, legsEphemeroptera Heptageniidae Iron fraudator Slaterville, Flower Preserve, New York 4/20/1931 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Iron fraudator Artist Brook, Esser County, New York 6/11/1933 C.R. Crosby + H. Dietrich male, imago, genitaliaEphemeroptera Heptageniidae Iron fraudator Enfield, New York 5/6/1932 J.R. Traver 4 female, imago, head, mouthparts, male, imago, genitalia, ny Ephemeroptera Heptageniidae Iron fraudator Enfield, New York 5/2/1933 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Iron fraudator Enfield, New York 5/9/1932 J.R. Traver nymph sloughEphemeroptera Heptageniidae Iron fraudator Horning Mills, Ontario, Canada 6/28/1928 F.P. Ide male, imago, genitalia, legsEphemeroptera Heptageniidae Iron fraudator Ringwood, Ellis Hollow, New York 5/5/1933 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Iron hesperus Waddell Creek, California D. Shepherd female, imago, wingsEphemeroptera Heptageniidae Iron humeralis Fall Creek, Varna, New York 6/4/1932 J.R. Traver 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Iron humeralis Fall Creek, Varna, New York 5/31/1932 J.R. Traver 3 male, nymph, entire, head, mouthparts, legs, gillsEphemeroptera Heptageniidae Iron humeralis Fall Creek, Varna, New York 6/2/1932 J.R. Traver 2 female, nymph sloughEphemeroptera Heptageniidae Iron humeralis Carter Creek, near Newfield, New York 6/29/1933 J.R. Traver 3 male, imago, genitalia, nymph sloughEphemeroptera Heptageniidae Iron humeralis Fish Hatchery, Ithaca, New York 6/12/1932 3 male, imago, genitaliaEphemeroptera Heptageniidae Iron humeralis St. Regis River, Fort Jackson, New York 6/21/1932 L. Harper male, imago, genitalia, legsEphemeroptera Heptageniidae Iron humeralis St. Regis River, Fort Jackson, New York 9/14/1933 L. Harper male, imago, genitaliaEphemeroptera Heptageniidae Iron humeralis Slaterville, New York 7/7/1933 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Iron humeralis Enfield, New York 7/19/1931 J.R. Traver nymph, mouthpartsEphemeroptera Heptageniidae Iron humeralis Fairport, Iowa 10/13/1930 C.N. Hardy male, imago, genitaliaEphemeroptera Heptageniidae Iron longimanus Maligne Lake, Alberta, Canada 7/4/1915 J.C. Bradley male, imago, genitaliaEphemeroptera Heptageniidae Iron longimanus Colorado G.S. Dodds male, imago, genitalia

Ephemeroptera Heptageniidae Iron longimanus no locality data G.S. Dodds 2Ephemeroptera Heptageniidae Iron longimanus no locality data G.S. Dodds 2Ephemeroptera Heptageniidae Iron longimanus Estes Park, Colorado 8/7/1921 male, imago, genitaliaEphemeroptera Heptageniidae Iron longimanus South Park, Colorado E.G. Oslar male, imago, genitaliaEphemeroptera Heptageniidae Iron longimanus Glacier National Park, Montana 7/2/1932 male, imago, genitalia, legsEphemeroptera Heptageniidae Iron longimanus Yellowstone River, Wyoming 7/30/1921Ephemeroptera Heptageniidae Iron longimanus Moose, Wyoming 8/1/1929Ephemeroptera Heptageniidae Iron longimanus Moose, Wyoming 8/4/1929 E.B. Klots male, subimago, genitalia, legsEphemeroptera Heptageniidae Iron longimanus Logan River, Utah 6/29-30/1926 3 maleEphemeroptera Heptageniidae Iron longimanus Logan River, Utah 7/19/1929 maleEphemeroptera Heptageniidae Iron pleuralis Enfield, New York 5/2/1933 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Iron pleuralis no locality data 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Iron proprius Colorado G.S. Dodds male, imago, genitaliaEphemeroptera Heptageniidae Iron proprius Colorado G.S. Dodds male, imago, genitalia, wingsEphemeroptera Heptageniidae Iron proprius Colorado G.S. Dodds male, imago, genitaliaEphemeroptera Heptageniidae Iron punctatus Buffalo, New York 6/6/1906 C. Betten male, imago, genitaliaEphemeroptera Heptageniidae Iron rubidus Valle Crucis, North Carolina 5/29/1936 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Iron rubidus Valle Crucis, North Carolina 5/30/1936 J.R. Traver 2 male, imago, genitalia, legs, nymph sloughEphemeroptera Heptageniidae Iron rubidus Valle Crucis, North Carolina 6/6/1936 J.R. Traver male, nymph sloughEphemeroptera Heptageniidae Iron rubidus Blowing Rock, North Carolina 6/7/1936 J.R. Traver + L.C. Thomsen 4 female, imago, wings, male, imago, genitalia, wings, nymph Ephemeroptera Heptageniidae Iron rubidus Cathey Creek, Cherryfield, North Carolina 6/19/1936 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Iron rubidus Cherryfield, North Carolina 6/25/1936 J.R. Traver female, nymph sloughEphemeroptera Heptageniidae Iron rubidus Cowee Mt., North Carolina 7/14/1929 male, subimago, genitalia, legsEphemeroptera Heptageniidae Iron rubidus Ivy River, North Carolina 6/15/1929 nymph, entireEphemeroptera Heptageniidae Iron rubidus Flat Creek, Black Mts., North Carolina 6/16/1929 J.R. Traver 5 female + male, imago, genitalia, legs, nymph, entire, head, Ephemeroptera Heptageniidae Iron rubidus Rocky Broad River, Lecky Gap, North Carolina 6/17/1936 J.R. Traver 2 male, imago, genitalia, nymph sloughEphemeroptera Heptageniidae Iron rubidus Allen Creek, North Carolina 7/24/1929 male, imago, genitalia, legsEphemeroptera Heptageniidae Iron rubidus Banners Elk, North Carolina 5/31/1936 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Iron rubidus Pacolet River, Tryon, North Carolina 7/14/1930 male, subimago, genitaliaEphemeroptera Heptageniidae Iron sancta-gabriel San Gabriel Canyon, California 6/7/1932 C.D. Michener male, imago, genitalia, legsEphemeroptera Heptageniidae Iron subpallidus Cedar Creek, near Glenville, North Carolina 6/20/1936 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Iron subpallidus Cedar Creek, near Glenville, North Carolina 6/21/1936 J.R. Traver 2 female, nymph slough, male, imago, wingsEphemeroptera Heptageniidae Iron subpallidus Cedar Creek, near Glenville, North Carolina 6/30/1929 J.R. Traver male, nymph, entire, gillsEphemeroptera Heptageniidae Iron subpallidus Cedar Creek, North Carolina 7/10/1930 J.R. Traver nymph sloughEphemeroptera Heptageniidae Iron suffusus Corinth, New York 6/1/1916 male, imago, genitaliaEphemeroptera Heptageniidae Iron tenuis Ringwood, New York 6/21/1933 J.R. Traver 2 nymph, entire, gillsEphemeroptera Heptageniidae Iron tenuis Ringwood, New York 6/24/1933 J.R. Traver 2 male, imago, genitaliaEphemeroptera Heptageniidae Iron youngi Cutright Creek, Glacier National Park, Montana 8/15/1932 A.S. H. male, imago, genitaliaEphemeroptera Heptageniidae Iron youngi Kintla Lake, Glacier National Park, Montana 8/16/1933 R.T. Young 3 male, imago, genitalia, wingsEphemeroptera Heptageniidae Iron sp Smoke Hole, Potomac River, West Virginia 8/10/1930 J.R. Traver 2 male, imago, genitalia, legs, nymph sloughEphemeroptera Heptageniidae Iron sp Waynesville, North Carolina 7/21/1930 2 nymph, entire, head, mouthpartsEphemeroptera Heptageniidae Iron sp Flat Creek, Black Mts., North Carolina 6/16/1929 2 nymph, entireEphemeroptera Heptageniidae Iron sp Clarks Creek, Valle Crucis, North Carolina 5/30/1936 J.R. Traver male, nymph, entire, gillsEphemeroptera Heptageniidae Iron sp Logan River, Utah 6/29-30/1926 nymphEphemeroptera Heptageniidae Iron sp Logan River, Utah 7/9/1926 nymphEphemeroptera Heptageniidae Ironodes californicus Icehouse Canyon, San Gabriel Mts., California 4/15/1933 C.D. Michener 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ironodes lepidus Silver Canyon, White Mts., California 5/10/1926 J.O. Martin 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ironodes nitidus Corvallis, Oregon 4/19/1931 H.A. Scullen 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ironodes nitidus Alsea, Oregon 5/25/1931 H.A. Scullen 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Ironodes nitidus no locality data wingsEphemeroptera Heptageniidae Ironodes sp Valley of Falls, Mill Creek, San Bernardino Mts., Califo 7/30/1930 3 nymph, head, mouthparts, legs, gillsEphemeroptera Heptageniidae Ironodes sp Evey Canyon, ? 10/16/1922 male, subimago, genitalia, legsEphemeroptera Heptageniidae Pseudiron centralis Manhattan, Kansas October 1933 R.C. Smith 2 female, imago, head, wingsEphemeroptera Heptageniidae Pseudiron centralis Hannibal, Missouri 6/26/1933 W.D. Sargent female, imago, wingsEphemeroptera Heptageniidae Pseudiron meridionalis Chattahoochee River, Atlanta, Georgia 6/10/1932 P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena amica Banners Elk, North Carolina 6/3/1936 J.R. Traver nymph, entire, gillsEphemeroptera Heptageniidae Rhithrogena amica Banners Elk, North Carolina 6/8/1936 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Rhithrogena amica Heaton, North Carolina 6/3/1936 J.R. Traver 7 female + male, imago, genitalia, wings, legs, nmyph, entireEphemeroptera Heptageniidae Rhithrogena amica Trout Brook, Slaterville, New York 4/16/1931 J.R. Traver 3 nymph, head, mouthparts, legs, gillsEphemeroptera Heptageniidae Rhithrogena amica Slaterville, New York 5/20/1932 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena amica Valle Crucis, North Carolina 6/4/1936 J.R. Traver 2 female, imago, wings, male, imago, genitaliaEphemeroptera Heptageniidae Rhithrogena amica Valle Crucis, North Carolina 6/6/1936 J.R. Traver female, imago, wingsEphemeroptera Heptageniidae Rhithrogena amica Valle Crucis, North Carolina 6/9/1936 J.R. Traver 2 male, subimago, genitaliaEphemeroptera Heptageniidae Rhithrogena amica Valle Crucis, North Carolina 5/25/1936 J.R. Traver 2 female, nymph, entire, head, mouthparts, legs, gillsEphemeroptera Heptageniidae Rhithrogena amica Ringwood Creek, Ellis Hollow, New York 5/14/1933 J.R. Traver male, imago, genitalia

Ephemeroptera Heptageniidae Rhithrogena anomala Saranac, New York 6/9/1933 C.R. Crosby + H. Dietrich male, imago, genitaliaEphemeroptera Heptageniidae Rhithrogena anomala St. Regis River, Fort Jackson, New York 6/21/1932 L. Harper male, imago, genitalia, legsEphemeroptera Heptageniidae Rhithrogena doddsi Moose, Wyoming August 1929 E.B. Klots 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena doddsi Horse Thief Meadows, Mount Hood National Forest, O 7/11/1928 M.D. Leonard male, imago, genitaliaEphemeroptera Heptageniidae Rhithrogena doddsi Colorado G.S. Dodds male, imago, genitalia, legsEphemeroptera Heptageniidae Rhithrogena doddsi no locality data G.S. DoddsEphemeroptera Heptageniidae Rhithrogena doddsi Logan River, Utah 7/4/1926 J.G. Needham 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena doddsi Logan River, Utah 7/4-5/1926 male, subimagoEphemeroptera Heptageniidae Rhithrogena doddsi Logan River, Utah 7/1-2/1926 2Ephemeroptera Heptageniidae Rhithrogena doddsi Logan River, Utah 7/2/1926Ephemeroptera Heptageniidae Rhithrogena doddsi Logan River, Utah 6/17/1926Ephemeroptera Heptageniidae Rhithrogena doddsi Logan River, Utah 6/22/1926 J.G. Needham male, subimago, genitaliaEphemeroptera Heptageniidae Rhithrogena doddsi Logan River, Utah 6/25-26/1926Ephemeroptera Heptageniidae Rhithrogena doddsi Logan River, Utah 6/29-30/1926 J.G. Needham male, imago, genitaliaEphemeroptera Heptageniidae Rhithrogena doddsi Logan River, Utah 6/30/1926 J.G. Needham 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena doddsi Logan River, Utah July 1926 5Ephemeroptera Heptageniidae Rhithrogena doddsi Logan River, Utah male, imago, wingsEphemeroptera Heptageniidae Rhithrogena doddsi Jordan River, Utah 7/29/1926Ephemeroptera Heptageniidae Rhithrogena exilis Flat Creek, Black Mts., North Carolina 6/20/1929 male, subimago, genitalia, legsEphemeroptera Heptageniidae Rhithrogena exilis Flat Creek, Black Mts., North Carolina 6/11-17/1930 J.R. Traver 2 nymph, head, mouthparts, legsEphemeroptera Heptageniidae Rhithrogena exilis Flat Creek, Black Mts., North Carolina 6/13/1930 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena exilis Flat Creek, Black Mts., North Carolina 6/27/1930 male, subimago, genitalia, legsEphemeroptera Heptageniidae Rhithrogena exilis Flat Creek, Black Mts., North Carolina 6/17/1930 J.R. Traver nymph, entire, gillsEphemeroptera Heptageniidae Rhithrogena exilis Flat Creek, Black Mts., North Carolina 7/1/1930 male, subimago, genitalia, legsEphemeroptera Heptageniidae Rhithrogena fasciata Waynesville, North Carolina 7/16/1929 J.R. Traver 2 male, subimago, genitalia, legs, nymph sloughEphemeroptera Heptageniidae Rhithrogena fasciata Waynesville, North Carolina 7/18/1929 J.R. Traver 4 male, imago, genitalia, legs, nymph, head, mouthparts, legs Ephemeroptera Heptageniidae Rhithrogena fasciata Rocky Broad River, Lecky Gap, North Carolina 6/23/1930 J.R. Traver nymph, head, mouthparts, legsEphemeroptera Heptageniidae Rhithrogena fasciata Core Creek, Sugar Grove, North Craolina 6/9/1936 L.C. Thomsen + J.R. Traver 3 female, imago, wings, nymph, entire, sloughEphemeroptera Heptageniidae Rhithrogena fasciata no locality data 7/16/1929 2 male, subimago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena flavianula Yosemite Valley, California 7/5/1927 E.H. Nast 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena fuscifrons Pigeon River, North Varolina 7/20/1930 J.R. Traver 3 nymph, entire, head, mouthparts, legsEphemeroptera Heptageniidae Rhithrogena fuscifrons Pigeon River, Hazelwood, North Varolina 7/21/1930 female, subimago, wingsEphemeroptera Heptageniidae Rhithrogena impersonata Lachine, Quebec, Canada 6/19/1929 G.S. Walley male, imago, genitaliaEphemeroptera Heptageniidae Rhithrogena jejuna Golversville, New York May 15 C.P. Alexander male, imago, wingsEphemeroptera Heptageniidae Rhithrogena petulans Icehouse Canyon, San Gabriel Mts., California 4/15/1933 C.D. Michener 4 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena petulans Felton, California 5/15-19/1907 J.C. Bradley 5 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena petulans Felton, California J.C. Bradley 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Rhithrogena petulans Cucumonga Canyon, Claremont, California T.R. Seemann male, imago, genitaliaEphemeroptera Heptageniidae Rhithrogena petulans Cucumonga Canyon, California 3/29/1923 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena robusta Maligne Lake, Alberta, Canada 7/4/1915 J.C. Bradley 2 male, imago, genitalia, legsEphemeroptera Heptageniidae Rhithrogena robusta Homestead Inn, Mount Hood, Oregon 7/2/1927 E.C. van Duzee male, imago, genitaliaEphemeroptera Heptageniidae Rhithrogena robusta no locality data G.S. Dodds 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena rubicunda Heaton, North Carolina 6/3/1936 J.R. Traver female, imago, wingsEphemeroptera Heptageniidae Rhithrogena rubicunda Valle Crucis, North Carolina 6/6/1936 J.R. Traver 3 male, imago, genitalia, wingsEphemeroptera Heptageniidae Rhithrogena rubicunda Banners Elk, North Carolina 6/8/1936 J.R. Traver 5 female, imago, wings, male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena semicolorata Chagford, England, United Kingdom 6/5/1912 M.E. Moseley 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Rhithrogena uhari Caraway Creek, North Carolina 4/20/1929 J.R. Traver nymph, mouthpartsEphemeroptera Heptageniidae Rhithrogena undulata Greer, Arizona 6/25/1926 C.T. Vorhies male, imago, genitaliaEphemeroptera Heptageniidae Rhithrogena undulata Golden, British Columbia, Canada September 1914 J.C. Bradley 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena undulata Spring Creek, Moose, Wyoming July 17 E.B. Klots male, imago, genitaliaEphemeroptera Heptageniidae Rhithrogena undulata Spring Creek, Moose, Wyoming 7/19/1929 E.B. Klots 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena undulata Pullmann, Washington male, imago, genitaliaEphemeroptera Heptageniidae Rhithrogena undulata Alsea, Oregon 5/25/1931 H.A. Scullen male, imago, genitaliaEphemeroptera Heptageniidae Rhithrogena sp Mount Hood National Forest, Oregon 7/2/1928 M.D. Leonard 4 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Rhithrogena sp Logan River, Utah 6/2/1926 J.G. Needham male, imago, genitalia, legsEphemeroptera Heptageniidae Rhithrogena sp Logan River, Utah 7/1-2/1926 2 maleEphemeroptera Heptageniidae Rhithrogena sp Logan River, Utah 2/7/1922 mouthpartsEphemeroptera Heptageniidae Rhithrogena sp Logan River, Utah J.G. Needham male, imago, genitalia, legsEphemeroptera Heptageniidae Rhithrogena sp Ocona Lufty River, North Carolina 7/12/1929 J.R. Traver nymph, head, mouthparts, legsEphemeroptera Heptageniidae Rhithrogena sp Valle Crucis, North Carolina 5/25/1936 J.R. Traver 2 female, nymph, entire, gillsEphemeroptera Heptageniidae Rhithrogena sp Lecky Gap, North Carolina 6/17/1936 J.R. Traver 2 female, imago, wings, male, nymph, genitaliaEphemeroptera Heptageniidae Rhithrogena sp Blowing Rock, North Carolina 6/7/1936 J.R. Traver female, imago, wingsEphemeroptera Heptageniidae Rhithrogena sp Fairport, Iowa July 1916 maleEphemeroptera Heptageniidae Rhithrogena sp Good Creek, Ashford ?, ? ButterEphemeroptera Heptageniidae Rhithrogena sp Grimsel Pass, Switzerland 8/7/1932 C.R. Crosby 2 male, imago, genitalia, wings

Ephemeroptera Heptageniidae Rhithrogena sp Barogh, Simla Hills, India 5/10/1910 A. Annandale female, imago, wingsEphemeroptera Heptageniidae Stenonema alabamae Sheffield, Alabama 7/4/1936 J.R. Traver + L.C. Thomsen male, imago, genitaliaEphemeroptera Heptageniidae Stenonema annexum Goshen Swamp, North Carolina 4/2/1929 J.G. Needham 2 male, imago, wingsEphemeroptera Heptageniidae Stenonema annexum Buies Creek, North Carolina 4/1/1930 mouthpartsEphemeroptera Heptageniidae Stenonema bellum French Broad River, Penrose, North Carolina 7/19/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema bipunctatum Rockford, Illinois male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema birdi Comanche County, Oklahoma 2/28/1932 4 male, imago, genitalia, wings, legs, mouthpartsEphemeroptera Heptageniidae Stenonema canadense Big Hollow Brook, Hopkinton, New York 6/28/1932 L. Harper 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema canadense Golf Course, Quebec, Canada 6/27/1923 R. Ozburn 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Stenonema canadense Golf Course, Quebec, Canada 8/3/1923 R. Ozburn male, imago, genitalia, legs, tailsEphemeroptera Heptageniidae Stenonema canadense Tuanita Island, Lake George, New York 8/29/1920 J.G. Needham 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema canadense Afterglow, near Fairhaven, New York 7/31/1932 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Stenonema canadense St. Regis River, Fort Jackson, New York 6/21/1932 L. Harper male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema canadense S Kinner, Maine 7/1/1931 A.E. Brower male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema canadense Chagrin River, Pleasant Valley, Ohio 9/14/1930 P. Lewis maxillaeEphemeroptera Heptageniidae Stenonema canadense Chagrin River, Kirtland, Ohio 8/31/1929 P. Lewis maxillaeEphemeroptera Heptageniidae Stenonema canadense Port Elgin, Lake Huron, Ontario, Canada 8/16/1933 E.G. Grieve male, imago, genitaliaEphemeroptera Heptageniidae Stenonema canadense Buffalo, New York 7/30/1906 maleEphemeroptera Heptageniidae Stenonema canadense locality not readable summer 1920 maleEphemeroptera Heptageniidae Stenonema canadense no locality data 8/31/1920 female + maleEphemeroptera Heptageniidae Stenonema candidum Westchester County, New York 6/19/1936 H.K. Townes male, imago, genitaliaEphemeroptera Heptageniidae Stenonema candidum Willoughby, Ohio 7/23/1934 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Stenonema carolina Moores Creek, Wardensville, West Virginia 8/15/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema carolina Mount LeConte, Great Smoky Mts., North Carolina 8/14/1929 J.G. Needham 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema carolina Blue Ridge Assembly, Black Mts., North Carolina 6/18/1929 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema carolina Pad Brook, Rockland County, New York 8/15/1931 L. Harper 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema carolina Ringwood, New York 6/5/1932 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema carolina Big Hollow Brook, Hopkinton, New York 6/28/1932 L. Harper male, imago, wingsEphemeroptera Heptageniidae Stenonema carolina Greenville, South Carolina 10/9/1932 H.K. Townes male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema carolina Black Mts., North Carolina 5/31/1912 Beutenmuller male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema carolina no locality dataEphemeroptera Heptageniidae Stenonema cascadilla Cascadilla Creek, Ithaca, New York June 1931 Yin-Chi Hu 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema cascadilla Fall Creek, Ithaca, New York 7/1/1931 C.N. Hardy male, imago, genitaliaEphemeroptera Heptageniidae Stenonema conjunctum Chagrin River, Pleasant Valley, Ohio 9/1/1933 J.R. Traver 3 male, imago, genitalia, wings, legs, nymph sloughEphemeroptera Heptageniidae Stenonema conjunctum Pleasant Valley, near Willoughby, Ohio 8/27/1933 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Stenonema femoratus Chagrin River, Kirtland, Ohio 9/6/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema femoratus Chagrin River, Kirtland, Ohio 9/12/1932 P. Lewis 2 maxillaeEphemeroptera Heptageniidae Stenonema femoratus Swamp Creek, near Dalton, Georgia 5/25/1931 P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema femoratus Swamp Creek, near Dalton, Georgia 7/24/1931 P.W. Fattig male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema femoratus Spero, North Carolina 2/28/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema femoratus Austin, Texas June 1931 H.B. Parks Jr. male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema frontalis Fall Creek, Varna, New York 7/10/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema gildersleevi Chagrin River, Kirtland, Ohio 8/22/1930 2 male, subimago, genitalia, legs, maxillaeEphemeroptera Heptageniidae Stenonema gildersleevi Chagrin River, Kirtland, Ohio 8/25/1930 3 male, imago, genitalia, wings, legs, maxillaeEphemeroptera Heptageniidae Stenonema gildersleevi Chagrin River, Kirtland, Ohio 9/3/1929 J.R. Traver 2 male, imago, genitalia, legs, nymph sloughEphemeroptera Heptageniidae Stenonema gildersleevi Chagrin River, Kirtland, Ohio 9/14/1930 3 nymph, head, mouthparts, legs, gillsEphemeroptera Heptageniidae Stenonema gildersleevi Chagrin River, Kirtland, Ohio 8/6/1930 P. Lewis maxillaeEphemeroptera Heptageniidae Stenonema gildersleevi Chagrin River, Kirtland, Ohio 8/22/1930 P. Lewis maxillaeEphemeroptera Heptageniidae Stenonema gildersleevi Chagrin River, Kirtland, Ohio 8/31/1930 P. Lewis maxillaeEphemeroptera Heptageniidae Stenonema gildersleevi Chagrin River, Kirtland, Ohio 9/22/1932 P. Lewis maxillaeEphemeroptera Heptageniidae Stenonema heterotarsale Caraway Creek, Sophia, North Carolina 4/23/1930 2 male, subimago, genitalia, legsEphemeroptera Heptageniidae Stenonema heterotarsale Caraway Creek, Sophia, North Carolina 5/21/1930 J.R. Traver 2 male, subimago, genitalia, wings, legs, nymph sloughEphemeroptera Heptageniidae Stenonema heterotarsale Salmon Creek, North Lansing, New York 7/17/1932 J.R. Traver female, imago, head, mouthpartsEphemeroptera Heptageniidae Stenonema heterotarsale Moores Creek, Wardensville, West Virginia 8/12/1930 P. Lewis maxillaeEphemeroptera Heptageniidae Stenonema heterotarsale Chagrin River, Pleasant Valley, Ohio 8/24/1933 J.R. Traver nymph sloughEphemeroptera Heptageniidae Stenonema interpunctatum Goshen Swamp, North Carolina 4/11/1929 J.G. Needham 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema interpunctatum Fall Creek, Varna, New York 7/15/1931 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema interpunctatum Fall Creek, Varna, New York 7/2/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema interpunctatum Knoxville, Tennessee June 1931 L. Shipe 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Stenonema interpunctatum Salmon Creek, North Lansing, New York 7/5/1932 2 nymph, head, mouthparts, legsEphemeroptera Heptageniidae Stenonema interpunctatum Afterglow, near Fairhaven, New York July 4 J.G. Needham 2 male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema interpunctatum Ithaca, New York July 1931 C.N. Hardy male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema interpunctatum Lake Forest, Illinois June 1903 J.G. Needham male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema interpunctatum Chicod Swamp, Pitl County, North Carolina 4/12/1929 J.G. Needham male, subimago, genitalia, legsEphemeroptera Heptageniidae Stenonema interpunctatum Beebe Lake, Ithaca, New York July 1931 C.N. Hardy male, imago, wings

Ephemeroptera Heptageniidae Stenonema interpunctatum Fairport, Iowa July 16 wingsEphemeroptera Heptageniidae Stenonema interpunctatum Three Miles Bog, New York 7/10/1906 maleEphemeroptera Heptageniidae Stenonema interpunctatum McLean, New York 8/7/1924 wingsEphemeroptera Heptageniidae Stenonema interpunctatum Juanita Island ?, Lake George, New York 8/30/1920 male, wingsEphemeroptera Heptageniidae Stenonema integer Austin, Texas 5/13/1931 male, imago, genitaliaEphemeroptera Heptageniidae Stenonema integrum Lawrence, Kansas J. McDunnough male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema ithaca Davidson River, North Carolina 6/21/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema ithaca Salmon Creek, New York 7/15/1931 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema ithaca Sphaerium Brook, McLean, New York 6/16/1924 male, subimago, genitalia, legsEphemeroptera Heptageniidae Stenonema ithaca Rock Creek, near Blue Ridge, Georgia 6/27/1931 P.W. Fattig male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema ithaca St. Regis River, Fort Jackson, New York 6/20/1932 L. Harper male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema ithaca no locality data 2 wingsEphemeroptera Heptageniidae Stenonema luteum Wisconsin male, imago, genitaliaEphemeroptera Heptageniidae Stenonema majus Cascadilla Creek, Ithaca, New York 7/20/1932 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Stenonema majus Cascadilla Creek, Ithaca, New York 6/4/1933 J.R. Traver nymph sloughEphemeroptera Heptageniidae Stenonema majus Fall Creek, Varna, New York 7/10/1932 J.R. Traver male, imago, wingsEphemeroptera Heptageniidae Stenonema majus Old Forge, New York 7/12-13/1905 2Ephemeroptera Heptageniidae Stenonema modestus Great Falls, Virginia July 12 genitaliaEphemeroptera Heptageniidae Stenonema nepotellum Fall Creek, Varna, New York 7/3/1931 4 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema nepotellum Golf Course, Ontario, Canada 7/22/1924 J. McDunnough 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Stenonema nepotellum St. Regis River, New York June 1932 L. Harper male, imago, genitaliaEphemeroptera Heptageniidae Stenonema ohioense Ringwood, New York 5/25/1932 J.R. Traver 2 nymph, head, mouthparts, legsEphemeroptera Heptageniidae Stenonema ohioense Ringwood, New York 6/26/1933 J.R. Traver nymph sloughEphemeroptera Heptageniidae Stenonema ohioense Paine Creek, Leroy, Ohio 8/7/1933 J.R. Traver male, imago, wingsEphemeroptera Heptageniidae Stenonema ohioense Paine Creek, Leroy, Ohio 8/10/1933 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Stenonema ohioense Paine Creek, Leroy, Ohio 8/13/1933 J.R. Traver nymph sloughEphemeroptera Heptageniidae Stenonema pallidum Cascades, Danbury, North Carolina 5/21/1930 3 male, imago, genitalia, wings, legs, nymh sloughEphemeroptera Heptageniidae Stenonema pallidum Cascades, Danbury, North Carolina 5/4/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema pallidum Valle Crucis, North Carolina 6/7/1936 2Ephemeroptera Heptageniidae Stenonema proximum Fall Creek, Varna, New York 7/3/1931 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Stenonema proximum Fall Creek, Varna, New York 7/10/1931 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Stenonema proximum Wilseyville Creek, near White Church, New York 6/10/1933 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Stenonema proximum Wilseyville Creek, near White Church, New York 6/14/1933 J.R. Traver nymph sloughEphemeroptera Heptageniidae Stenonema proximum Cascadilla Creek, Ithaca, New York 5/27/1933 J.R. Traver nymph sloughEphemeroptera Heptageniidae Stenonema proximum Fish Hatchery, Ithaca, New York 6/16/1931 W.O. Sadler male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema pudicum Cascades, Danbury, North Carolina 5/3/1930 J.R. Traver male, imago, wingsEphemeroptera Heptageniidae Stenonema pudicum Cascades, Danbury, North Carolina 5/8/1930 J.R. Traver male, subimago, genitalia, legsEphemeroptera Heptageniidae Stenonema pudicum Cascades, Danbury, North Carolina 5/10/1930 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema pudicum Cascades, Danbury, North Carolina 5/19/1930 J.R. Traver male, subimago, genitaliaEphemeroptera Heptageniidae Stenonema pudicum Cedar Creek, North Carolina 7/14/1930 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema pudicum Cedar Creek, Glenville, North Carolina 7/17/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema pudicum Cedar Creek, North Carolina 7/23/1930 J.R. Traver male, imago, wingsEphemeroptera Heptageniidae Stenonema pudicum Waynesville, North Carolina 7/21/1929 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema pudicum Ringwood, New York 6/4/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema pudicum Clemson College, South Carolina 2/2/1932 D. Dunavan 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema pudicum Reidsville Road, North Carolina 4/3/1929 2 male, subimago, genitalia, legsEphemeroptera Heptageniidae Stenonema pulchellum Plerrout Valley, Iowa ? Rothschild ? maleEphemeroptera Heptageniidae Stenonema ruber Caraway Creek, Sophia, North Carolina 5/13/1929 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema ruber St. Regis River, Fort Hopkinton, New York 6/24/1932 L. Harper male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema ruber Alamance Creek, near Alamance, North Carolina 5/5/1930 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema ruber Camp Carolina, Brevard, North Carolina 7/23/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema ruber Cascades, Danbury, North Carolina 5/3/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema rubromaculatum Muskoda, Minnesota 6/11/1933 L.A. Carruth male, imago, genitaliaEphemeroptera Heptageniidae Stenonema rubromaculatum New York male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema scitulum Latimer County, Oklahoma 6/10/1931 R.D. Bird 2 male, imago, genitalia, wingsEphemeroptera Heptageniidae Stenonema scitulum San Angelo, Texas 6/13/1932 S.E. Jones male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema smithae Spencer Mill, near Tuscaloosa, Alabama 7/2/1936 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Stenonema susquechanna Fall Creek, Ithaca, New York 6/10/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema susquechanna Wileysville, New York 7/9/1932 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema susquechanna Beaver Creek, Chicago Bog, New York 6/6/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema terminatum Lewiston, Idaho 8/8/1931 R.E. Rodock 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema terminatum Lewiston, Idaho 7/30/1931 R.E. Rodock male, subimago, genitalia, legsEphemeroptera Heptageniidae Stenonema terminatum Lake Winnipeg, Gimli, Manitoba, Canada 7/24/1930 F. Neave male, imago, genitaliaEphemeroptera Heptageniidae Stenonema terminatum no locality data male, imago, genitaliaEphemeroptera Heptageniidae Stenonema tripunctatum Afterglow, near Fairhaven, New York 7/31/1932 male, imago, genitalia, legs

Ephemeroptera Heptageniidae Stenonema tripunctatum Bear Gully Creek, Ohio 6/20/1931 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema tripunctatum Black Lake, New York 8/23/1931 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema tripunctatum Johnston County, Oklahoma 2/9/1932 R.D. Bird male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema tripunctatum Lake Erie, Willowick, Ohio 7/9/1934 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Stenonema tripunctatum Columbia, Missouri 4/21/1905 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema varium Spero, North Carolina 3/3/1930 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema varium Flat Creek, Black Mts., North Carolina 6/17/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema varium Caraway Creek, Sophia, North Carolina 4/18/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema varium Greensboro, North Carolina 4/23/1930 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema varium Big Alamance Creek, North Carolina 10/2/1929 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema varium Tabernacle Ch., Greensboro, North Carolina 5/1/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema varium Pole Cat Creek, North Carolina 4/5/1930 male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema varium Pole Cat Creek, North Carolina 4/8/1930 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema varium Pole Cat Creek, North Carolina 4/9/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema varium Pole Cat Creek, North Carolina 4/16/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema varium no locality data 8/19/1929 2 legs, maxillaeEphemeroptera Heptageniidae Stenonema vitripunctatus Johnston County, Oklahoma 2/9/1932 R.D. Bird male, imago, wingsEphemeroptera Heptageniidae Stenonema sp Fall Creek, Varna, New York 7/10/1932 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema sp Fall Creek, Varna, New York 7/21/1932 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Stenonema sp Ocona Lufty River, North Carolina 6/30/1930 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema sp Cascadilla Creek, Ithaca, New York 7/11/1932 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema sp Cascadilla Creek, Ithaca, New York 7/12/1932 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Stenonema sp Cascadilla Creek, Ithaca, New York 7/15/1932 J.R. Traver 3 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema sp Cascadilla Creek, Ithaca, New York 7/16/1932 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema sp Cascadilla Creek, Ithaca, New York 7/27/1932 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Stenonema sp Greenville, South Carolina 4/2/1932 H.K. Townes male, imago, wingsEphemeroptera Heptageniidae Stenonema sp Greenville, South Carolina 5/10/1932 H.K. Townes male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema sp Greenville, South Carolina 7/20/1932 H.K. Townes male, imago, genitaliaEphemeroptera Heptageniidae Stenonema sp Greenville, South Carolina 9/2/1932 H.K. Townes male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema sp Greenville, South Carolina 10/9/1932 H.K. Townes male, imago, wingsEphemeroptera Heptageniidae Stenonema sp Beaver Creek, Chicago Bog, New York 6/6/1932 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Heptageniidae Stenonema sp St. Regis River, Fort Jackson, New York 6/20/1932 L. Harper male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema sp Austin, Texas 5/13/1931 male, imago, wingsEphemeroptera Heptageniidae Stenonema sp Ringwood, New York 7/1/1933 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema sp Wilseyville, New York 7/16/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema sp Wilseyville, New York 7/20/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema sp Ithaca, New York 8/1/1926 P.J. Chapman male, imago, genitaliaEphemeroptera Heptageniidae Stenonema sp Afterglow, near Fairhaven, New York 7/31/1932 male, imago, genitaliaEphemeroptera Heptageniidae Stenonema sp Reidsville road, stream 10 miles N Greensboro, North 4/10/1930 nymph, mouthpartsEphemeroptera Heptageniidae Stenonema sp Cranberry Lake, New York 7/20/1902 male, imago, genitaliaEphemeroptera Heptageniidae Stenonema sp Big Hollow Brook, Hopkinton, New York 6/23/1932 L. Harper male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema sp Inlet Brook, McLean, New York 6/30/1924Ephemeroptera Heptageniidae Stenonema sp Willoughby, Ohio 9/11/1928 male, imago, wingsEphemeroptera Heptageniidae Stenonema sp Cantor Creek, Menfield, New York 6/29/1933 J.R. Traver male, imago, genitaliaEphemeroptera Heptageniidae Stenonema sp Polson, Montana 8/7/1910 R.T. Young male, imago, genitaliaEphemeroptera Heptageniidae Stenonema sp Manhattan, Kansas 5/11/1922 R.C. Smith male, imago, genitaliaEphemeroptera Heptageniidae Stenonema sp Buffalo, New York 6/28/1906 male, imago, genitalia, legsEphemeroptera Heptageniidae Stenonema sp Passadum Bog ?, Maine 6/12/1933 A.E. Brower wingsEphemeroptera Heptageniidae Stenonema sp no locality data 3Ephemeroptera Leptohyphidae Leptohyphus sp no locality data wingsEphemeroptera Leptohyphidae Tricorythafer fugitans Terra du Congo, tropical Africa ?, Congo Basin ? body partsEphemeroptera Leptohyphidae Tricorythodes allectus Ithaca, New York 6Ephemeroptera Leptohyphidae Tricorythodes atratus Martinsburg, New York 8/20/1932 O. Smith male, imago, genitalia, legsEphemeroptera Leptohyphidae Tricorythodes explicatus Fort Davis, Texas July-Aug 1927/1928 ? O.C. Poling + H.A. Scullen 2 male, imago, genitalia, wingsEphemeroptera Leptohyphidae Tricorythodes explicatus Cimarron Canon, Therma, New Mexico 8/13/1932 2 male, imago, genitalia, wingsEphemeroptera Leptohyphidae Tricorythodes fallax Slaterville, Wildflower Preserve, New York 8/21/1932 J.G. Needham 2 male, imago, genitalia, wingsEphemeroptera Leptohyphidae Tricorythodes fallax Waddell Creek, California D. Shepherd 2 male, imago, genitaliaEphemeroptera Leptohyphidae Tricorythodes minutus Sugarworks, Logan River, Utah 7/13/1926 3 male, imago, genitalia, wings, legsEphemeroptera Leptohyphidae Tricorythodes minutus Logan River, Utah 7/11/1922 wingsEphemeroptera Leptohyphidae Tricorythodes minutus Devils Slide, UtahEphemeroptera Leptohyphidae Tricorythodes minutus Provo River, Utah 7/22/1926 J.G. Needham 2 male, imago, genitaliaEphemeroptera Leptohyphidae Tricorythodes texanus Devils River, Texas 8/2/1917 CU Biological Expedition 3 male, imago, genitaliaEphemeroptera Leptohyphidae Tricorythodes sp Phoenix, Arizona 5/7/1918 J.C. Bradley 2 male, wings, nymphEphemeroptera Leptohyphidae Tricorythodes sp Cloondale ?, California 10/4/1917 J.C. Bradley 2 male, imago, genitalia, wingsEphemeroptera Leptohyphidae Tricorythodes sp Zillah, Washington October M.D. Leonard male, imago, genitalia

Ephemeroptera Leptohyphidae Tricorythodes sp Taquitz Valley, San Jacinto Mts., California September 1922 male, imago, genitaliaEphemeroptera Leptohyphidae Tricorythodes sp Taquitz Valley, San Jacinto Mts., California 9/6/1923 J.G. Needham nymph, body partsEphemeroptera Leptohyphidae Tricorythodes sp Jenny Stream ?, New MexicoEphemeroptera Leptophlebiidae Atalophlebia chilensis Puenta del Quea ?, Argentina March 22 2 body partsEphemeroptera Leptophlebiidae Atalophlebia scita no locality data 8/2/1906 wingsEphemeroptera Leptophlebiidae Atalophlebioideflavopedes Moengo, Boven, Cottioa River, Surinam 5/13/1927 CU Biological Expedition 2 male, imago, genitalia, wingsEphemeroptera Leptophlebiidae Borinquena carmencita Luquillo Mts., Puerto Rico 2/18/1935 J.G. Needham 6 male, imago, genitalia, wings, legs, subimago, wings, nymp Ephemeroptera Leptophlebiidae Borinquena carmencita Luquillo Mts., Puerto Rico 2/17/1935 J.G. Needham + J. Garcia-Diaz female, imago, ovipositorEphemeroptera Leptophlebiidae Borinquena carmencita Luquillo Mts., Puerto Rico J. Garcia-Diaz male, nymph sloughEphemeroptera Leptophlebiidae Borinquena carmencita Trouts Creek, Loquillo Mts., Puerto Rico 6/9/1935 J. Garcia-Diaz male, imago, wingsEphemeroptera Leptophlebiidae Borinquena carmencita El Yungue Creek, Puerto Rico 6/1/1935 J. Garcia-Diaz 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Borinquena contradicens Luquillo Mts., Puerto Rico 2/18/1935 J.G. Needham + J. Garcia-D 2 female + male, entire, mouthpartsEphemeroptera Leptophlebiidae Borinquena contradicens Luquillo Mts., Puerto Rico 6/8-14/1935 J. Garcia-Diaz 2 male, subimago, genitalia, nymph sloughEphemeroptera Leptophlebiidae Choroterpes albiannulata Lethbridge, Alberta, Canada 8/21/1929 J.H. Pepper 2 male, imago, genitalia, wingsEphemeroptera Leptophlebiidae Choroterpes basalis East Creek, Leroy, Ohio 8/12/1932 J.R. Traver 4 male, imago, genitalia, legs, nymph, entire, mouthpartsEphemeroptera Leptophlebiidae Choroterpes basalis East Creek, Leroy, Ohio 8/14/1932 J.R. Traver nymph sloughEphemeroptera Leptophlebiidae Choroterpes basalis East Creek, Leroy, Ohio 8/18/1932 J.R. Traver female, imago, wingsEphemeroptera Leptophlebiidae Choroterpes basalis Cascadilla Creek, Ithaca, New York 7/9/1932 J.R. Traver 2 nymph, mouthparts, legsEphemeroptera Leptophlebiidae Choroterpes basalis Cascadilla Creek, Ithaca, New York 7/12/1932 J.R. Traver 2 nymph, mouthparts, gillsEphemeroptera Leptophlebiidae Choroterpes basalis Cascadilla Creek, Ithaca, New York 7/15/1932 J.R. Traver nymph sloughEphemeroptera Leptophlebiidae Choroterpes basalis Cascadilla Creek, Ithaca, New York 7/16/1932 J.R. Traver female, imago, wings, male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Choroterpes basalis Fall Creek, Varna, New York 7/15/1931 J.R. Traver male, imago, headEphemeroptera Leptophlebiidae Choroterpes basalis Fall Creek, Ithaca, New York 7/15/1901 J.G. Needham 2 nymph, mouthparts, gillsEphemeroptera Leptophlebiidae Choroterpes basalis East Creek, Big Creek tributary, Leroy, Ohio 8/15/1932 J.R. Traver 2 nymph, legs, gillsEphemeroptera Leptophlebiidae Choroterpes basalis Chagrin River, Kirtland, Ohio 9/2/1929 J.R. TraverEphemeroptera Leptophlebiidae Choroterpes basalis Southwest Harbor, Long Pond, Hancock County, Main 9/8/1934 A.E. Brower male, genitaliaEphemeroptera Leptophlebiidae Choroterpes bilineata Moengo, Boven Cottica River, Surinam 5/1-28/1927 P.P. Babiy female, imago, wingsEphemeroptera Leptophlebiidae Choroterpes emersoni Penal Settlement, Bartica, British Guiana 3/22/1918 CU Entomological Expedition 2 male, subimago, genitalia, wingsEphemeroptera Leptophlebiidae Choroterpes emersoni Penal Settlement, Bartica, British Guiana 3/27/1919 CU Entomological Expedition 2 male, subimago, genitalia, wingsEphemeroptera Leptophlebiidae Choroterpes emersoni Magami River ?, ? 5/19/1919 A. Emerson 2Ephemeroptera Leptophlebiidae Choroterpes ferruginea Old Forge, New York August 1905 J.G. Needham male, imago, genitaliaEphemeroptera Leptophlebiidae Choroterpes ferruginea Commissioners Island, Lake George, New York 8/25/1920 J.G. Needham 2 male, imago, genitaliaEphemeroptera Leptophlebiidae Choroterpes ferruginea no locality data 3 maleEphemeroptera Leptophlebiidae Choroterpes nanita Austin, Texas June 1931 H.J. Parks Jr. 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Choroterpes oklahoma Murray County, Oklahoma 3/20/1932 C. Sandoz 2 male, imago, genitalia, legsEphemeroptera Leptophlebiidae Choroterpes terratoma San Gabriel Canyon, San Gabriel Mts., California 6/9/1932 C.D. Michener 3 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Choroterpes terratoma San Gabriel Canyon, San Gabriel Mts., California 6/20/1932 C.D. Michener male, imago, wingsEphemeroptera Leptophlebiidae Choroterpes terratoma San Gabriel Canyon, San Gabriel Mts., California 6/23/1932 C.D. Michener mouthpartsEphemeroptera Leptophlebiidae Choroterpes terratoma San Gabriel Canyon, San Gabriel Mts., California 5/23/1931 C.D. Michener nymph, gillsEphemeroptera Leptophlebiidae Choroterpes terratoma Andreas Canyon, Palm Springs, California 3/25/1923 wings, nymphEphemeroptera Leptophlebiidae Choroterpes terratoma Cloondale ?, California 10/4/1917 J.C. Bradley 2 femaleEphemeroptera Leptophlebiidae Choroterpes sp Elk Garden, West Virginia 8/21/1930 J.G. Needham 3 nymph, entire, gillsEphemeroptera Leptophlebiidae Choroterpes sp Smoke Hole, West Virginia 8/8/1930 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Leptophlebiidae Choroterpes sp Coy Glen, New York 7/24/1910 2 wings, nymphEphemeroptera Leptophlebiidae Choroterpes sp Ithaca, New York 8/15/1901 J.G. Needham nymphs, entireEphemeroptera Leptophlebiidae Choroterpes sp no locality data male, imago, body partsEphemeroptera Leptophlebiidae Habrophlebia pusilla Cascades, North Carolina 5/4/1929 3 male, subimago, genitalia, wings, legs, nymph sloughEphemeroptera Leptophlebiidae Habrophlebia pusilla Greenville, South Carolina 4/29/1932 H.K. Townes male, imago, genitalia, legsEphemeroptera Leptophlebiidae Habrophlebia vibrans Old Forge, New York 7/1/1905 J.G. Needham 5 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Habrophlebia vibrans Great Smoky Mts., Tennessee 6/11/1931 P.N. Musgrave 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Habrophlebia vibrans Greenville, South Carolina 4/29/1932 H.K. Townes male, imago, genitaliaEphemeroptera Leptophlebiidae Habrophlebia vibrans New York 6/22/1929 P.R. Needham 3Ephemeroptera Leptophlebiidae Habrophlebiod americana Cascades, North Carolina 5/24/1929 2 nymph, mouthparts, sloughEphemeroptera Leptophlebiidae Habrophlebiod americana Penrose, North Carolina 7/8/1930 male, imago, wingsEphemeroptera Leptophlebiidae Habrophlebiod americana Ithaca, New York 6/17/1916 male, imago, genitaliaEphemeroptera Leptophlebiidae Habrophlebiod americana Ithaca, New York 7/5/1927 J.G. Needham male, imago, genitaliaEphemeroptera Leptophlebiidae Habrophlebiod americana Wayah Creek, North Carolina 7/2/1929 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Habrophlebiod americana Passaic, New Jersey E. Berry 2 nymph, mouthparts, sloughEphemeroptera Leptophlebiidae Habrophlebiod americana Greenville, South Carolina 9/1/1932 H.K. Townes 2 male, imago, genitaliaEphemeroptera Leptophlebiidae Habrophlebiod americana no locality data 8/1/1927Ephemeroptera Leptophlebiidae Habrophlebiod annulata Oklahoma March 1932 R.D. Bird 3 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Habrophlebiod betteni Slaterville, New York 7/27/1929 femaleEphemeroptera Leptophlebiidae Habrophlebiod betteni Slaterville, New York 7/26/1929 maleEphemeroptera Leptophlebiidae Habrophlebiod betteni Ithaca, New York 6/17/1916 2 female, imagoEphemeroptera Leptophlebiidae Habrophlebiod betteni Ithaca, New York 6/26/1917 male, body parts

Ephemeroptera Leptophlebiidae Habrophlebiod betteni Ithaca, New York 2Ephemeroptera Leptophlebiidae Habrophlebiod betteni Harford, New York 6/23/1930 2 female + maleEphemeroptera Leptophlebiidae Habrophlebiod betteni Salmon Creek, New York 5/24/1930Ephemeroptera Leptophlebiidae Habrophlebiod betteni Salmon Creek, New York 7/6/1930 female, imago, subimagoEphemeroptera Leptophlebiidae Habrophlebiod betteni Big Hollow Brook, Hopkinton, New York 6/28/1932 L. Harper male, imago, genitaliaEphemeroptera Leptophlebiidae Habrophlebiod betteni Davidson River, Pisgah Forest, North Carolina 6/20/1936 L.C. Thomsen + J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Leptophlebiidae Habrophlebiod betteni Trade, Tennessee 6/9/1936 L.C. Thomsen 2 male, imago, genitalia, wingsEphemeroptera Leptophlebiidae Habrophlebiod betteni McLean, New York 6/17/1916 7 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Habrophlebiod betteni Sphaerium Brook, McLean, New York 6/18/1924 2 wings, nymph sloughEphemeroptera Leptophlebiidae Habrophlebiod betteni McLean, New York maleEphemeroptera Leptophlebiidae Habrophlebiod betteni no locality data 6/24/1916 maleEphemeroptera Leptophlebiidae Habrophlebiod betteni no locality dataEphemeroptera Leptophlebiidae Habrophlebiod sp no locality data 7/13/1927 P.R. Needham male, imago, genitaliaEphemeroptera Leptophlebiidae Hagenulopsis minutus Kalacoon, British Guiana male, imago, wingsEphemeroptera Leptophlebiidae Hagenulopsis sp Kalacoon, Bartica District, British Guiana 5/19/1919 A. Emerson 2 male, imago, genitalia, wingsEphemeroptera Leptophlebiidae Hagenulus caligata CubaEphemeroptera Leptophlebiidae Hagenulus sp Havanna, CubaEphemeroptera Leptophlebiidae Hagenulus sp Cuba 2Ephemeroptera Leptophlebiidae Hagenulus sp Venti, Cuba 1930 2 female + maleEphemeroptera Leptophlebiidae Hagenulus sp Luquillo Mts., Puerto Rico 6/8-14/1935 J. Garcia-Diaz 2 female + male, subimago, wingsEphemeroptera Leptophlebiidae Hagenulus sp La Mina Recreation Area, Puerto Rico 7/14/1935 J. Garcia-Diaz 2 male, imago, genitalia, wingsEphemeroptera Leptophlebiidae Hagenulus sp locality not readableEphemeroptera Leptophlebiidae Hagenulus sp no locality dataEphemeroptera Leptophlebiidae Hermanella incertans Demerara River, Mackenzie, British Guiana 6/23/1927 CU Entomological Expedition 3 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Hermanella incertans Potaror River, Tumatumari, British Guiana 6/29/1927 CU Entomological Expedition 2 male, imago, genitalia, subimago, wingsEphemeroptera Leptophlebiidae Hermanella incertans British Guiana CU Entomological Expedition wingsEphemeroptera Leptophlebiidae Leptophlebia adoptiva Freeville, New York 4/14/1931 2 nymph, mouthparts, sloughEphemeroptera Leptophlebiidae Leptophlebia adoptiva Freeville, New York 4/29/1931 3 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia adoptiva Freeville, New York 5/1/1931 male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia adoptiva Cascadilla, Turkey Hill, Ithaca, New York 3/16/1930 2 female + male, nypmhEphemeroptera Leptophlebiidae Leptophlebia adoptiva Cascadilla, Ithaca, New York 4/19/1931 female, nymphEphemeroptera Leptophlebiidae Leptophlebia adoptiva Salmon Creek, New York 4/5/1930 female, imagoEphemeroptera Leptophlebiidae Leptophlebia adoptiva Salmon Creek, New York 4/17/1930 female, subimagoEphemeroptera Leptophlebiidae Leptophlebia adoptiva Salmon Creek, New York 4/18/1930 female + male, nymphEphemeroptera Leptophlebiidae Leptophlebia adoptiva Salmon Creek, New York 5/5/1931 male, subimagoEphemeroptera Leptophlebiidae Leptophlebia adoptiva Minnescongo Creek, Rockland County, New York 4/23/1932 L. Harper male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia adoptiva Valle Crucis, North Carolina April 1935 L.C. Thomsen male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia adoptiva Valle Crucis, North Carolina spring 1936 L.C. Thomsen male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia assimilis Greenville, South Carolina 4/9/1932 H.K. Townes male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia austrinus Liberty Lake, North Carolina 3/3/1930 J.R. Traver nymph sloughEphemeroptera Leptophlebiidae Leptophlebia austrinus Liberty Lake, North Carolina 3/17/1930 nymph, gillsEphemeroptera Leptophlebiidae Leptophlebia austrinus Liberty Lake, North Carolina 3/22/1930 male, imago, wingsEphemeroptera Leptophlebiidae Leptophlebia austrinus Liberty Lake, North Carolina 4/2/1930 male, nymph sloughEphemeroptera Leptophlebiidae Leptophlebia austrinus Pinecroft, near Greensboro, North Carolina 3/4/1930 male, imago, wingsEphemeroptera Leptophlebiidae Leptophlebia austrinus Pinecroft Lake, North Carolina 2/10/1930 3 female, imago, 10th sternite, nymph, mouthparts, legs, gillsEphemeroptera Leptophlebiidae Leptophlebia austrinus Pinecroft Lake, North Carolina 2/21/1930 female, imago, 10th sterniteEphemeroptera Leptophlebiidae Leptophlebia austrinus no locality data 4/26/1929 3 female + male, imago, genitalia, subanal plate, nymph, mou Ephemeroptera Leptophlebiidae Leptophlebia austrinus no locality data 1927 female, wingsEphemeroptera Leptophlebiidae Leptophlebia basalis no locality data female, abdomenEphemeroptera Leptophlebiidae Leptophlebia bicornata St. Marys River, Crandbrook, British Columbia, Canad 9/1/1930 J.H. Pepper 2 nymph, entire, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia bicornata Yellow Bay, Montana 9/9/1932 R.T. Young male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia bicornata Glacier National Park, Montana 8/26/1932 A.S. Howard male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia bicornata Montana R.T. Young 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia bradleyi Billys Lake, Cowhouse, Georgia 12/27-29/1914 J.C. Bradley 2 male, imago, genitalia, wingsEphemeroptera Leptophlebiidae Leptophlebia californica Waddell Creek, California D. Shepherd male, abdomenEphemeroptera Leptophlebiidae Leptophlebia clara Los Gatos, Santa Clara County, California male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia collinus Greenville, South Carolina 4/9/1932 H.K. Townes 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia collinus Highlands, North Carolina 4/5/1929 J.G. Needham nymph, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia collinus Mirror Lake, near Highlands, North Carolina 4/7/1929 J.G. Needham 6 male, subimago, genitalia, wings, nymph, head, mouthparts Ephemeroptera Leptophlebiidae Leptophlebia compar no locality data 7 male, imago + subimago, genitalia, wings, head, legsEphemeroptera Leptophlebiidae Leptophlebia cupidus Chagrin River, Kirtland, Ohio 4/7/1932 female, nmyph, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia cupidus Chagrin River, Kirtland, Ohio 4/15/1932 J.R. Traver 2 male, imago, wings, nymph sloughEphemeroptera Leptophlebiidae Leptophlebia cupidus Chagrin River, Kirtland, Ohio 4/16/1932 J.R. Traver 2 female, nymph, head, legs, gillsEphemeroptera Leptophlebiidae Leptophlebia cupidus Suffern, New York 4/27/1925 male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia cupidus Turnbull Swamp, Broden County, North Carolina 3/29-31/1934 female + male, nymph, body parts

Ephemeroptera Leptophlebiidae Leptophlebia cupidus Catotonk Creek, ? 5/8/1932 O. Smith male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia cupidus Scales Lake, North Carolina 3/11/1930 male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia cupidus Cascadilla Creek, Ithaca, New York 5/10/1931 J.R. Traver 2 female, imago, head, nymph, mouthparts, sloughEphemeroptera Leptophlebiidae Leptophlebia cupidus McLean, New York 3Ephemeroptera Leptophlebiidae Leptophlebia cupidus Six Mile Creek, Ithaca, New York 7/28/1918 H. Ern mouthpartsEphemeroptera Leptophlebiidae Leptophlebia cupidus Elkhart, Indiana 6/18/1902Ephemeroptera Leptophlebiidae Leptophlebia cupidus Elkhart, Indiana 3 female + maleEphemeroptera Leptophlebiidae Leptophlebia cupidus Beebe Lake, Ithaca, New York 4/19/1932 female, nymph, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia cupidus Ithaca, New York mouthpartsEphemeroptera Leptophlebiidae Leptophlebia cupidus Three Mile Creek, New Hampshire female, subimagoEphemeroptera Leptophlebiidae Leptophlebia cupidus no locality data 4Ephemeroptera Leptophlebiidae Leptophlebia cupidus Scales Lake, North Carolina 3/11/1930 male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia cupidus Scales Lake, North Carolina 3/18/1930 male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia debilis Old Forge, New York 8/12/1905 5 female + male, imago, nymphEphemeroptera Leptophlebiidae Leptophlebia debilis Old Forge, Little Moose, New York 8/1/1905 3 female, ovipositor, wings, male, imago, body partsEphemeroptera Leptophlebiidae Leptophlebia debilis Old Forge, Meadow Brook, New York 8/4/1905 nymph, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia debilis Old Forge, Bald Mountain Pond, New York 8/12/1905 2 female + male, imago, subimagoEphemeroptera Leptophlebiidae Leptophlebia debilis The Glen, Ithaca, New York 9/26/1929 3 female + male, nymphEphemeroptera Leptophlebiidae Leptophlebia debilis The Glen, Ithaca, New York 10/11/1928 J.G. Needham male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia debilis The Glen, Ithaca, New York 11/1/1929 5 female, imagoEphemeroptera Leptophlebiidae Leptophlebia debilis The Glen, Ithaca, New York 11/2/1929 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia debilis The Glen, Ithaca, New York 10/20/1932 J.G. Needham male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia debilis Salmon River, New York 7/12/1930 2 female + male, nymphEphemeroptera Leptophlebiidae Leptophlebia debilis Potters Mills, Pennsylvania 10/31/1924 S.C. Bishop 3 male, imago, wings, body partsEphemeroptera Leptophlebiidae Leptophlebia debilis Seton Lake, Lillooet, British Columbia, Canada 5/28/1926 J. McDunnoughEphemeroptera Leptophlebiidae Leptophlebia debilis McLean, New York October 1915 female + male, imagoEphemeroptera Leptophlebiidae Leptophlebia debilis McDonald Lake, Glacier National Park, Montana 8/21/1932 A.S. H. male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia debilis Blue Lake, Grand Coulee, Washington 11/17/1928 M.D. Leonard 3Ephemeroptera Leptophlebiidae Leptophlebia debilis Ogden River, Utah 10/1/1926 Pack 2Ephemeroptera Leptophlebiidae Leptophlebia debilis Logan River, Utah July 1926 female, nymphEphemeroptera Leptophlebiidae Leptophlebia debilis Ithaca, New York female + male, imagoEphemeroptera Leptophlebiidae Leptophlebia falcula Corvallis, Oregon 4/7/1907 H.A. Scullen 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia georgiana Swamp Creek, Dalton, Georgia 6/7/1931 P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia gracilis Lenoir County, North Carolina 4/11/1929 J.G. Needham 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia gracilis Hamburg Lake, North Carolina 4/20/1930 4 male, imago, genitalia, legs, nymphEphemeroptera Leptophlebiidae Leptophlebia gracilis Hamburg Lake, North Carolina 4/26/1929 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia gracilis Hamburg Lake, North Carolina 4/28/1931 female, imago, legs, 10th sterniteEphemeroptera Leptophlebiidae Leptophlebia gracilis Hamburg Lake, North Carolina 2 female + male, wingsEphemeroptera Leptophlebiidae Leptophlebia gracilis no locality data 4/22/1929 5 male, imago, genitalia, wings, legs, nymphEphemeroptera Leptophlebiidae Leptophlebia gracilis no locality data 4/26/1929Ephemeroptera Leptophlebiidae Leptophlebia gracilis no locality dataEphemeroptera Leptophlebiidae Leptophlebia grandis Scales Lake, North Carolina 3/16/1930 3 male, nymph, head, mouthparts, gills, sloughEphemeroptera Leptophlebiidae Leptophlebia grandis Scales Lake, North Carolina 3/18/1930 3 female, imago, 10th sternite, nymph, gills, sloughEphemeroptera Leptophlebiidae Leptophlebia grandis Lake near Liberty, North Carolina 3/22/1930 male, imago, wingsEphemeroptera Leptophlebiidae Leptophlebia gravastellus Hayden, Colorado 6/13/1907 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia gregalis Yorkville, California 5/17/1929 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia gregalis California 5/15-19/1907 J.C. BradleyEphemeroptera Leptophlebiidae Leptophlebia guttata Pigeon River, Waynesville, North Carolina 7/20/1930 2 nymph, entire, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia guttata Pigeon River, Waynesville, North Carolina 7/18/1929 2 male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia guttata Taughannock Park, New York 7/11/1927 K. Jordan male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia guttata Taughannock Park, New York 6/16/1931 female, subimago, male, imagoEphemeroptera Leptophlebiidae Leptophlebia guttata Ringwood, Ithaca, New York 6/28/1930 2 female, imago, male, subimagoEphemeroptera Leptophlebiidae Leptophlebia guttata Timpson Creek, Georgia June 1931 P.W. Fattig male, subimago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia guttata Wardensville, West Virginia 8/13/1930 J.R. Traver male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia guttata Pisgah Forest, near Davidson River, North Carolina 6/17/1936 J.R. Traver male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia guttata Coy Glen, Ithaca, New York 7/23/1929 3 female + male, imagoEphemeroptera Leptophlebiidae Leptophlebia guttata Coy Glen, Ithaca, New York 7/23/1930 male, nymphEphemeroptera Leptophlebiidae Leptophlebia guttata Terra Alta, West Virginia 7/28/1930 male, nymphEphemeroptera Leptophlebiidae Leptophlebia guttata Van Buskirks Creek, Ithaca, New York 7/26/1930 female, nymphEphemeroptera Leptophlebiidae Leptophlebia guttata Greenbrier, Great Smoky Mts., Tennessee 6/16/1931 J.G. Needham male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia guttata Marlinton, Pocahontas County, West Virginia 7/30/1930 2 female + male, nymphEphemeroptera Leptophlebiidae Leptophlebia guttata Slaterville, New York 7/27/1929 2 female + male, imagoEphemeroptera Leptophlebiidae Leptophlebia guttata Briggs Run, Smoke Hole, West Virginia 8/7/1930 J.R. Traver male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia guttata Salmon Creek, New York 7/6/1930 male, imagoEphemeroptera Leptophlebiidae Leptophlebia guttata McLaughlins Spring, Marlinton, West Virginia 8/1/1930 female + male, nymph

Ephemeroptera Leptophlebiidae Leptophlebia guttata Elk River, Valley Head, West Virginia 8/30/1930 female + male, nymphEphemeroptera Leptophlebiidae Leptophlebia guttata Elk Garden, West Virginia 8/21/1930 female, nymphEphemeroptera Leptophlebiidae Leptophlebia guttata no locality data 7/13/1927 P.R. Needham male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia heteronea Emerald Lake, Rocky Mountains, Canada July 2 J.C. Bradley 5 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia heteronea Yellowstone River, Yellowstone National Park, Wyomi 8/6/1921 3 female, nymphEphemeroptera Leptophlebiidae Leptophlebia heteronea Colorado Springs, Colorado 8/4/1911 2 male, imago, wings, nymphEphemeroptera Leptophlebiidae Leptophlebia heteronea Colorado G.S. Dodds 7Ephemeroptera Leptophlebiidae Leptophlebia heteronea Box Elder, Canon, Utah 7/27/1926 2 female + male, nymphEphemeroptera Leptophlebiidae Leptophlebia heteronea Beat River, Amalga, Utah 6/30/1926 male, nymphEphemeroptera Leptophlebiidae Leptophlebia heteronea Logan River, Utah 6/29-30/1926 3 female, nymph, imago, body partsEphemeroptera Leptophlebiidae Leptophlebia heteronea Logan, Utah 7/12/1922 male, nymphEphemeroptera Leptophlebiidae Leptophlebia heteronea Logan River, Utah 7/26/1926Ephemeroptera Leptophlebiidae Leptophlebia intermedia Cape Fear River, North Carolina 4/1/1930 6 male, subimago, genitalia, legs, nymph, head, mouthparts, Ephemeroptera Leptophlebiidae Leptophlebia intermedia Lake near Liberty, North Carolina 3/22/1930 male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia intermedia Liberty Lake, North Carolina 3/25/1930 male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia intermedia Turnbull Swamp, Broden County, North Carolina 3/29/1934 J.G. Needham 2 male, imago, genitalia, nymph, gillsEphemeroptera Leptophlebiidae Leptophlebia intermedia Scales Lake, North Carolina 3/28/1930 male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia intermedia Scales Lake, North Carolina 3/11/1930 male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia intermedia Scales Lake, North Carolina 3/18/1930 male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia johnsoni Nicatous Lake, Maine 6/10/1932 A.E. Brower male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia johnsoni Kearney Lake, Ontario, Canada 7/6/1926 F.P. Ide 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia johnsoni Sand Lake, Ontario, Canada 7/5/1926 F.P. Ide female, imago, wingsEphemeroptera Leptophlebiidae Leptophlebia johnsoni Stamford, Connecticut 6/10/1931 S.W. Bromley male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia johnsoni locality not readable 6/3/1921 C.P. Alexander 3Ephemeroptera Leptophlebiidae Leptophlebia marginata no locality data 5 male, imago, genitalia, wings, legs, nymph, head, mouthpar Ephemeroptera Leptophlebiidae Leptophlebia moerens Gyronophilus Spring, McLean, New York 8/31/1924 male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia moerens Slaterville, New York 7/26/1929 female, nymphEphemeroptera Leptophlebiidae Leptophlebia moerens Cascadilla, Ithaca, New York July 1929 male, nymph sloughEphemeroptera Leptophlebiidae Leptophlebia moerens Greensboro, North Carolina 4/20/1930 3 male, imago, genitalia, legs, nymph, entire, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia moerens The Glen, Ithaca, New York June 1929 5 female + male, subimago, nymphEphemeroptera Leptophlebiidae Leptophlebia moerens The Glen, Ithaca, New York July 1929 10 female, imago, femal + male, subimago, nymphEphemeroptera Leptophlebiidae Leptophlebia moerens The Glen, Ithaca, New York 6/2/1930 4 female + male, subimago, male, imagoEphemeroptera Leptophlebiidae Leptophlebia mollis Etna, New York 5/30/1930 6 female + male, imago, subimago, nymph, male, genitaliaEphemeroptera Leptophlebiidae Leptophlebia mollis Six Mile Creek, Ithaca, New York 6/1/1930 male, nymphEphemeroptera Leptophlebiidae Leptophlebia mollis Cascadilla, Ithaca, New York 6/8/1930 female + male, subimagoEphemeroptera Leptophlebiidae Leptophlebia mollis Van Buskirks, Ithaca, New York 5/7/1930 female, nymphEphemeroptera Leptophlebiidae Leptophlebia mollis Ithaca, New York female + male, nymphEphemeroptera Leptophlebiidae Leptophlebia mollis Fall Creek, Ithaca, New York 6/26/1907 male, imagoEphemeroptera Leptophlebiidae Leptophlebia mollis Fall Creek, Ithaca, New York 4/18/1930 nymphEphemeroptera Leptophlebiidae Leptophlebia mollis The Glen, Ithaca, New York 6/13/1924 2 male, imago, body partsEphemeroptera Leptophlebiidae Leptophlebia mollis Banners Elk, North Carolina 5/31/1936 J.R. Traver male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia mollis Tarbell, New York 6/10/1924 2 female + male, nymphEphemeroptera Leptophlebiidae Leptophlebia mollis Watkins Glen, New York 6/1/1930 female + male, nymphEphemeroptera Leptophlebiidae Leptophlebia mollis Brooktondale, New York 6/5/1930 T. Eaton 2 female + male, imagoEphemeroptera Leptophlebiidae Leptophlebia mollis Enfield, Ithaca, New York 6/7/1930 E. Gordon 3 male, imago, entire, genitalia, legs, nymph sloughEphemeroptera Leptophlebiidae Leptophlebia nebulosus Williamsburg, Virginia 4/29/1933 J.G. Needham 3 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia nebulosus McLean, New York 5/27/1920 female, nymph, head, legsEphemeroptera Leptophlebiidae Leptophlebia nebulosus McLean, New York June 5 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia nebulosus Renwick, Ithaca, New York 5/15/1931 male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia nebulosus Moose, Wyoming August 1929 E.B. Klots 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia nebulosus Hayden, Colorado 6/13/1907 3 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia nebulosus Ithaca, New York male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia nebulosus Taughannock Park, New York 6/11/1921 O.A. Johannsen wingsEphemeroptera Leptophlebiidae Leptophlebia nebulosus Lake ?, New York 6/1/1909 female, wingsEphemeroptera Leptophlebiidae Leptophlebia ontario Jordan, Ontario, Canada 6/25/1926 G.S. Walley 2 male, imago, entire, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia ontario Jordan, Ontario, Canada 6/28/1926 G.S. Walley 2 male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia ontario Cinnamon Lake, New York 7/4/1924 C.R. Crosby male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia pacificus Corvallis, Oregon 4/8/1930 H.A. Scullen 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia pacificus Corvallis, Oregon 4/2/1931 M.E. Canova nymph, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia packii Ogden River, north fork, Utah 10/1/1926 H.J. Pack 3 female, imago, subimago, male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia packii Ogden River, north fork, Utah October 1926 H.J. Pack 4 female + male, nymphEphemeroptera Leptophlebiidae Leptophlebia packii Ogden River, north fork, Utah 1926 male, subimago, body partsEphemeroptera Leptophlebiidae Leptophlebia packii Ogden River, north fork, Utah male, imago, body partsEphemeroptera Leptophlebiidae Leptophlebia packii Cucumonga Canyon, California 12/21/1917 male, subimago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia packii no locality data female, imago, wings

Ephemeroptera Leptophlebiidae Leptophlebia pallipes Corvallis, Oregon 4/16/1931 H.A. Scullen male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia pallipes Corvallis, Oregon 4/23/1931 H.A. Scullen 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia pallipes Logan, Utah 7/12/1922 J.G. Needham nymph, genitaliaEphemeroptera Leptophlebiidae Leptophlebia pallipes Yosemite, California 6/5/1931 F. Schulthess male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia pallipes Pikes Peak, Colorado June 1932 R.T. Gilmore male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia pallipes Glenwood, California 5/27/1907 J.C. Bradley male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia pallipes San Dimas ?, California 2/19/1923 T.M. R. male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia praepedita North Spencer, New York 5/21/1930 male, subimagoEphemeroptera Leptophlebiidae Leptophlebia praepedita North Spencer, New York 5/23/1930 4 female, imago, subimago, male, imago, genitalia, wings, legEphemeroptera Leptophlebiidae Leptophlebia praepedita North Spencer, New York 6/5/1930 female + male, nymphEphemeroptera Leptophlebiidae Leptophlebia praepedita Six Mile Creek, Ithaca, New York 6/1/1930 2 female, imago, subimagoEphemeroptera Leptophlebiidae Leptophlebia praepedita Sherburne, Massachusetts 6/7/1924 C.A. Frost 2 female + male, imago, subimagoEphemeroptera Leptophlebiidae Leptophlebia praepedita Lake Forest, Illinois 6/13/1903 female + male, nymphEphemeroptera Leptophlebiidae Leptophlebia praepedita Shokie River, Lake Forest, Illinois 5/29/1901 2 female, subimago, male, imagoEphemeroptera Leptophlebiidae Leptophlebia praepedita Pothole, Lake Forest, Illinois 8/27/1899 wingsEphemeroptera Leptophlebiidae Leptophlebia praepedita Lake Forest, Illinois 4 female, abdomen with eggs, male, imago, wingsEphemeroptera Leptophlebiidae Leptophlebia praepedita Lagrange, Indiana E.B. Williamson 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia praepedita Harford, New York 5/18/1930 male, imago, body partsEphemeroptera Leptophlebiidae Leptophlebia praepedita Maple River, Michigan 11/27/1904 nymphEphemeroptera Leptophlebiidae Leptophlebia sculleni Corvallis, Oregon 5/31/1931 D.K. F. male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia strigula Dundas, Ontario, Canada 5/31/1931 W.J. Brown male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia swannanoa Swannanoa River, north fork, North Carolina 6/12/1930 2 nymph, entire, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia swannanoa Swannanoa River, north fork, North Carolina 6/15/1930 3 female + male, imago, subimago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia swannanoa Selieia, Fr. Broad River, North Carolina 7/13/1930 nymphEphemeroptera Leptophlebiidae Leptophlebia swannanoa Rock Creek, nea Blue Ridge, Georgia P.W. Fattig male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia swannanoa Greenville, South Carolina 4/29/1932 H.K. Townes male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia temporalis Corvallis, Oregon 5/31/1931 H.A. Scullen male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia temporalis Waddell Creek, California May 1923 P.R. Needham male, subimago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia temporalis Mons, British Columbia, Canada 6/17/1926 J. McDunnough male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia temporalis Andreas Canyon, California 3/25/1923 T.M. R.Ephemeroptera Leptophlebiidae Leptophlebia temporalis San Dimas ?, California 2/16/1923 wingsEphemeroptera Leptophlebiidae Leptophlebia tinetus Corvallis, Oregon 4/2/1931 M.F. Canova nymph sloughEphemeroptera Leptophlebiidae Leptophlebia vaciva Crater Lake, Oregon August 1930 H.A. Scullen 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia vibex Corvallis, Oregon 5/16/1930 H.A. Scullen 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia vibex Corvallis, Oregon 4/16/1931 H.A. Scullen 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Leptophlebia volitans Roscoe, New York 7/26/1935 H.K. Townes male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia volitans Cacapon River, West Virginia 8/16/1930 J.G. Needham male, imago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia volitans Flat Iron Point, opposite Log Bay Island, Lake George 7/16/1926Ephemeroptera Leptophlebiidae Leptophlebia volitans Timpson Creek, Georgia 6/1/1931 P.W. Fattig male, imago, wingsEphemeroptera Leptophlebiidae Leptophlebia volitans Mossy Creek, Fort Valley, Georgia 6/1/1931 P.W. Fattig 4 male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia volitans Joe Lake, Algonquin Park, Ontario, Canada 8/7/1925 F.P. Ide 3 male, imago, genitalia, wingsEphemeroptera Leptophlebiidae Leptophlebia sp Cape Fear River, North Carolina 4/1/1930 3 nymph, entire, head, legsEphemeroptera Leptophlebiidae Leptophlebia sp Cascadilla Creek, Ithaca, New York 5/20/1931 J.R. Traver nymph sloughEphemeroptera Leptophlebiidae Leptophlebia sp Cascadilla Creek, Ithaca, New York 5/23/1931 J.R. Traver 2 male, imago, genitalia, nymph sloughEphemeroptera Leptophlebiidae Leptophlebia sp Cascadilla Creek, Ithaca, New York 4/30/1937 J.R. Traver male, nymph, entireEphemeroptera Leptophlebiidae Leptophlebia sp Cascadilla Creek, Ithaca, New York 5/15/1927 R. Hawkins 2Ephemeroptera Leptophlebiidae Leptophlebia sp Ithaca, New York 5/12/1927 R. Hawkins nymph, entireEphemeroptera Leptophlebiidae Leptophlebia sp Monteith Brook, Scotts Creek, North Carolina 4/8/1930 J.S. Gutsell 2 nymph, entire, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia sp Swannanoa River, North Carolina 6/15/1930 3 nymph, entire, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia sp Stanford University, California 4Ephemeroptera Leptophlebiidae Leptophlebia sp Fort Grant, Arizona 7/18/1917 3 nymph, entire, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia sp Altay, New York 5/29/1912 2 female, body partsEphemeroptera Leptophlebiidae Leptophlebia sp McLean Bog, New York 5/17/1924 wingsEphemeroptera Leptophlebiidae Leptophlebia sp McLean Bog, New York June 5 body partsEphemeroptera Leptophlebiidae Leptophlebia sp Highlands, North Carolina 4/5/1929 2 female, nymph, head, mouthparts, legsEphemeroptera Leptophlebiidae Leptophlebia sp Turnbull Swamp, Broden County, North Carolina 3/29/1934 J.G. Needham 2 male, imago, wings, nymph, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia sp Cucumonga Canyon, California 11/22/1922 2Ephemeroptera Leptophlebiidae Leptophlebia sp Raleigh, North Carolina May 1902 3Ephemeroptera Leptophlebiidae Leptophlebia sp Salmon River, Westville, ? 7/15/1930Ephemeroptera Leptophlebiidae Leptophlebia sp Pinedale Club, Randleman Road, Quilford County, No 4/24/1930 nymph, entireEphemeroptera Leptophlebiidae Leptophlebia sp Waddell Creek, California 8/25/1931 P.R. MurphiEphemeroptera Leptophlebiidae Leptophlebia sp San Dimas ?, California 2/23/1923Ephemeroptera Leptophlebiidae Leptophlebia sp Raymond, New Hampshire 6/8/1928 P.R. Lowry male, imago, genitalia, legsEphemeroptera Leptophlebiidae Leptophlebia sp Testers Creek, Canada 5/7/1933 A.I. Wright male, nymph, gillsEphemeroptera Leptophlebiidae Leptophlebia sp Centennial, Wyoming 6/27/1929 E.B. Klots male, nymph, genitalia

Ephemeroptera Leptophlebiidae Leptophlebia sp Blacklick Creek, Blacklick, Ohio 1/27/1937 nymph, entire, gillsEphemeroptera Leptophlebiidae Leptophlebia sp IndianaEphemeroptera Leptophlebiidae Leptophlebia sp Hayden, Colorado 6/13/1907Ephemeroptera Leptophlebiidae Leptophlebia sp Ringwood, New York 6/28/1930 nymph, mouthpartsEphemeroptera Leptophlebiidae Leptophlebia sp M.A.C. ?, Michigan 5/20/1910 male, imago, wingsEphemeroptera Leptophlebiidae Leptophlebia sp Los Gatos, Santa Clara County, California male, imago, wingsEphemeroptera Leptophlebiidae Leptophlebia sp Corvallis, Oregon 5/31/1931 H.A. Scullen male, subimago, genitaliaEphemeroptera Leptophlebiidae Leptophlebia sp Hankinson, Walnut Lake, ? 5/14/1906 female, imago, abdomen, wingsEphemeroptera Leptophlebiidae Leptophlebia sp southern California legs, caudal appendagesEphemeroptera Leptophlebiidae Leptophlebia sp no locality data wingsEphemeroptera Leptophlebiidae Leptophlebia sp Kualam, ? January 1905 E.B. WilliamsonEphemeroptera Leptophlebiidae Leptophlebia sp Wo-fu-ssu, China 3/24/1928Ephemeroptera Leptophlebiidae Leptophlebia sp Jakensin, Wo-fu-ssu, China 3/24/1927Ephemeroptera Leptophlebiidae Leptophlebia sp Simba Hills, Matiana, ? 4/30/1907Ephemeroptera Leptophlebiidae Leptophlebia sp Juchow ?, ? C.R. KellogEphemeroptera Leptophlebiidae Neohagenulus julio Yunez River, Puerto Rico 6/21/1935 J. Garcia-Diaz male, nymph sloughEphemeroptera Leptophlebiidae Neohagenulus julio Yunez River, Puerto Rico 6/22/1935 J. Garcia-Diaz female, imago, wingsEphemeroptera Leptophlebiidae Neohagenulus julio Yunez River, Puerto Rico 8/12/1935 J. Garcia-Diaz male, imago, genitaliaEphemeroptera Leptophlebiidae Neohagenulus julio Lares, Guajatica Creek, Puerto Rico 3/23/1935 J.G. Needham + J. Gracia-Diaz male, imago, genitaliaEphemeroptera Leptophlebiidae Neohagenulus julio Rio Blanco, Puerto Rico 3/7/1935 J.G. Needham 2 female + male, nymph, entireEphemeroptera Leptophlebiidae Neohagenulus julio Luquillo Mts., Puerto Rico 6/7/1935 J. Garcia-Diaz male, imago, wingsEphemeroptera Leptophlebiidae Neohagenulus julio Luquillo Mts., Puerto Rico 6/9/1935 J. Garcia-Diaz 2 male, imago, genitalia, nymph sloughEphemeroptera Leptophlebiidae Neohagenulus julio Luquillo Mts., Puerto Rico 2/18/1935 J.G. Needham 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Neohagenulus luteolus Hicaco River, Luquillo Mts., Puerto Rico 3/7/1935 J.G. Needham nymph, body partsEphemeroptera Leptophlebiidae Neohagenulus luteolus Coca Creek, Luquillo Mts., Puerto Rico 5/26/1935 J. Garcia-Diaz female + male, nymph, entire, mouthpartsEphemeroptera Leptophlebiidae Neohagenulus luteolus Luquillo Mts., Puerto Rico 6/13/1935 J. Garcia-Diaz female, imago, wingsEphemeroptera Leptophlebiidae Neohagenulus luteolus Luquillo Mts., Puerto Rico 6/14/1935 J. Garcia-Diaz nymph sloughEphemeroptera Leptophlebiidae Neohagenulus tinctus Rio Cidara, Puerto Rico 3/24/1935 J. Garcia-Diaz 2 female, imago, abdomen, wingsEphemeroptera Leptophlebiidae Neohagenulus tinctus Lares, Guajatica Creek, Puerto Rico 3/22/1935 J.G. Needham + J. Garcia-D 2 female, nymph, entire, mouthparts, wing padsEphemeroptera Leptophlebiidae Neohagenulus tinctus La Catalina, Luquillo Mts., Puerto Rico 4/14-15/1929 J. Garcia-Diaz male, imago, genitaliaEphemeroptera Leptophlebiidae Neohagenulus tinctus Rio Prieto, Puerto Rico 3/7/1935 J.G. Needham + J. Garcia-Diaz female + male, nymphs, entireEphemeroptera Leptophlebiidae Neohagenulus tinctus Luquillo Mts., Puerto Rico 6/13/1935 J. Garcia-Diaz 3 female, imago, abdomen, legs, male, imago, genitalia, nym Ephemeroptera Leptophlebiidae Neohagenulus tinctus Luquillo Mts., Puerto Rico 6/10/1935 J. Garcia-Diaz 4 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Neohagenulus sp El Rucio, Pemelas, Puerto Rico 1934 F.M. Pagan nymph, entire, mouthpartsEphemeroptera Leptophlebiidae Neohagenulus sp La Catalina, Luquillo Mts., Puerto Rico J. Garcia-Diaz female, imago, wingsEphemeroptera Leptophlebiidae Neohagenulus sp Wag Water River, Jamaica 1/23/1935 E.L. Palmer nymphEphemeroptera Leptophlebiidae Paraleptophlebgeorgiana Swamp Creek, Dalton, Georgia May 1931 P.W. Fattig male, imago, genitaliaEphemeroptera Leptophlebiidae Paraleptophlebsubmarginata France femaleEphemeroptera Leptophlebiidae Thraulodes furficulus Georgetown, British Guiana 1913 CU Biological Expedition 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Thraulodes plicatus El Campamiento, Peru 6/10/1920 CU Entomological Expedition male, subimago, genitaliaEphemeroptera Leptophlebiidae Thraulodes telegraphicus El Campamiento, Peru 6/28/1920 CU Entomological Expedition male, subimago, genitaliaEphemeroptera Leptophlebiidae Thraulodes sp Cachi, Costa Rica 3/15/1910 Calvert 2 body parts, wingsEphemeroptera Leptophlebiidae Thraulodes sp Camino del Pichis ?, Peru 7/4/1920 2Ephemeroptera Leptophlebiidae Thraulus albertanus Uinta County, Utah 9/8/1911 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Thraulus howardi Umbelusi, Mozambique ? 5/3/1909 L.O. Howard 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Thraulus maculatus Cosquin, Argentina March 8 male, imago, genitaliaEphemeroptera Leptophlebiidae Thraulus missionensis Pirapora, Brazil 11/11-13/1919Ephemeroptera Leptophlebiidae Thraulus presidianus Presidio, Texas August 1913 F.L. Thomas 2 male, imago, genitalia, wings, legsEphemeroptera Leptophlebiidae Thraulus valdemari Alta Parana River, Argentina 2 wingsEphemeroptera Leptophlebiidae Thraulus sp Alta Parana River, Argentina CU Entomological Expedition 2 male, subimago, genitalia, wingsEphemeroptera Leptophlebiidae Thraulus sp Paraguay River, Esparancea, Brazil male, subimago, wingsEphemeroptera Leptophlebiidae Thraulus sp Miriativiani ?, Peru July 9Ephemeroptera Leptophlebiidae Thraulus sp Enenas Camino del Pichis ?, Peru 7/4/1920Ephemeroptera Leptophlebiidae Thraulus sp El Campamiento, Peru 6/11/1920 CU Entomological Expedition male, subimago, genitaliaEphemeroptera Leptophlebiidae Thraulus sp Barro Colorado Island, PanamaEphemeroptera Leptophlebiidae Leptophlebiida sp no locality data body partsEphemeroptera Metretopodidae Siphloplecton basale Lake near Liberty, North Carolina 3/17/1930 J.R. Traver 2 nymph, mouthparts, legsEphemeroptera Metretopodidae Siphloplecton basale Old Forge, Hatchery, New York March 1921 nymph, mouthpartsEphemeroptera Metretopodidae Siphloplecton basale Douglas Lake, Michigan 11/25/1904 nymph, legs, gillsEphemeroptera Metretopodidae Siphloplecton basale Three Mile Creek, New Hampshire May 1906 J.H. Emerton wingsEphemeroptera Metretopodidae Siphloplecton basale no locality data 3/24/1929 5 female + male, body partsEphemeroptera Metretopodidae Siphloplecton basale no locality data female, imago, wingsEphemeroptera Metretopodidae Siphloplecton flexus Afterglow, New York 6/19/1924 2 maleEphemeroptera Metretopodidae Siphloplecton flexus Douglas Lake, Michigan 11/25/1904Ephemeroptera Metretopodidae Siphloplecton signatum Liberty Lake, North Carolina 3/17/1930 2 nymph, head, mouthparts, gills

Ephemeroptera Metretopodidae Siphloplecton signatum Liberty Lake, North Carolina 3/19/1930 3 female, imago, 10th sternite, eggs, head, mouthparts, nymp Ephemeroptera Metretopodidae Siphloplecton speciosum Macon, Georgia 3/22/1931 P.W. Fattig 2 nymph, head, mouthparts, legs, gillsEphemeroptera Metretopodidae Siphloplecton speciosum Echeconee Creek, Georgia 4/14/1931 P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Metretopodidae Siphloplecton speciosum Echeconee Creek, Georgia 4/15/1931 P.W. Fattig female, imago, 9th + 10th sternitesEphemeroptera Metretopodidae Siphloplecton sp Alamance Creek, North Carolina 10/19/1929 3 nymph, head, mouthparts, legsEphemeroptera Metretopodidae Siphloplecton sp Old Forge, Hatchery, New York March 1921Ephemeroptera Metretopodidae Siphloplecton sp no locality data 3/5/1905 femaleEphemeroptera Neoephemerida Neoephemera bicolor Lapraivie, Quebec, Canada 7/7/1925 F.P. Ide 2 male, imago, genitalia, wingsEphemeroptera Neoephemerida Oreianthus purpureus Davidson River, North Carolina 6/19/1929 male, nymph, mouthpartsEphemeroptera Neoephemerida Oreianthus purpureus Davidson River, North Carolina 6/22/1929 2 female, subimago, wings, male, nymph, genitaliaEphemeroptera Neoephemerida Oreianthus purpureus Davidson River, North Carolina 6/30/1930 3 male, imago, wings, legsEphemeroptera Neoephemerida Oreianthus purpureus Davidson River, Pisgah Forest, North Carolina 6/12/1936 male, imago, legsEphemeroptera Neoephemerida Oreianthus purpureus Davidson River, Pisgah Forest, North Carolina 6/20/1936 2 male, imago, genitalia, wingsEphemeroptera Neoephemerida Oreianthus purpureus Mitchell River, North Carolina 10/13/1929 nymph, mouthpartsEphemeroptera Neoephemerida Oreianthus purpureus no locality data 6/19/1929 nymph, legsEphemeroptera Neoephemerida Oreianthus sp Elk Garden, Mineral County, West Virginia 8/21/1930 nymphEphemeroptera Neoephemerida Oreianthus sp no locality data P.W. Fattig nymph, legs, mouthpartsEphemeroptera Oligoneuriidae Coloburiscus humeralis ? Gualan/Sualan ?, S ? 8/2/1906 2 female, wings, body partsEphemeroptera Oligoneuriidae Elassoneuria sp Stanleyville, Democratic Republic of Congo January-February 1895 wingsEphemeroptera Oligoneuriidae Elassoneuria sp Congo, tropical Africa ?, Congo Basin ? 2 body parts, wingsEphemeroptera Oligoneuriidae Homoeoneuria sp Gualan/Sualan ?, S ? January 1905 body partsEphemeroptera Oligoneuriidae Isonychia albomanicata Big Alamance Creek, North Carolina 5/19/1929 2 male, imago, genitalia, wings, legsEphemeroptera Oligoneuriidae Isonychia albomanicata Big Alamance Creek, North Carolina spring 1926 3 female, nymph, head, mouthparts, gillsEphemeroptera Oligoneuriidae Isonychia albomanicata Potomac River, south fork, West Virginia 2/3/1930 C.N. Hardy 2 male, imago, genitalia, wingsEphemeroptera Oligoneuriidae Isonychia albomanicata Potomac River, south fork, West Virginia 2/4/1930 C.N. Hardy 2 male, imago, genitalia, nympph, mouthpartsEphemeroptera Oligoneuriidae Isonychia albomanicata Fairport, Iowa 10/21/1930 C.N. Hardy 2 male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia albomanicata Fairport, Iowa 2/8/1931 C.N. Hardy femaleEphemeroptera Oligoneuriidae Isonychia albomanicata Fairport, Iowa 1916 femaleEphemeroptera Oligoneuriidae Isonychia albomanicata Ithaca, New York 11/3/1930 C.N. Hardy male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia albomanicata Ithaca, New York July 1919 wingsEphemeroptera Oligoneuriidae Isonychia albomanicata Ithaca, New York wingsEphemeroptera Oligoneuriidae Isonychia albomanicata M.A.R. ?, Michigan 2/3/1930 C.N. Hardy wingsEphemeroptera Oligoneuriidae Isonychia albomanicata Kellog Creek, Painesville, Ohio 8/12/1932 J.R. Traver male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia albomanicata Smoke Hole, Pendleton County, West Virginia 2/7/1931 C.N. Hardy male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia albomanicata Fall Creek, New York 7/25/1901 C.N. Hardy male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia albomanicata Paine Creek, Painesville, Ohio 8/19/1929 J.R. Traver male, nymph sloughEphemeroptera Oligoneuriidae Isonychia albomanicata West Virginia 2/4/1930 C.N. Hardy male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia albomanicata West Virginia 2/21/1930 C.N. Hardy wingsEphemeroptera Oligoneuriidae Isonychia albomanicata West Virginia 2/22/1930 C.N. Hardy male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia albomanicata West Virginia J.R. TraverEphemeroptera Oligoneuriidae Isonychia albomanicata no locality data nymph, legsEphemeroptera Oligoneuriidae Isonychia albomanicata no locality data 4 genitalia, wings, legs, gillsEphemeroptera Oligoneuriidae Isonychia albomanicata no locality data 7/3/1918 H. Ern 2 mouthpartsEphemeroptera Oligoneuriidae Isonychia albomanicata Howard ?, Iowa 10/10/1930 C.N. Hardy nymph sloughEphemeroptera Oligoneuriidae Isonychia annulatus Big Alamance Creek, North Carolina 5/22/1929 2 female, nymph, head, mouthparts, legsEphemeroptera Oligoneuriidae Isonychia annulatus Big Alamance Creek, North Carolina spring 1926 female, nymph, gillsEphemeroptera Oligoneuriidae Isonychia annulatus no locality data nymph, legsEphemeroptera Oligoneuriidae Isonychia aridus Fall Creek, New York 7/13/1931 C.N. Hardy 3 nymph, mouthparts, gillsEphemeroptera Oligoneuriidae Isonychia aureus Pigeon River, North Carolina 7/26/1929 2 female, nymph, mouthparts, gillsEphemeroptera Oligoneuriidae Isonychia bicolor Cascadilla Creek, Ithaca, New York 7/12/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia bicolor Cascadilla Creek, Ithaca, New York 7/20/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia bicolor Slaterville, New York 9/19/1931 J.R. Traver nymph sloughEphemeroptera Oligoneuriidae Isonychia bicolor Pleasant Valley, near Willoughby, Ohio 8/9/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia bicolor Pleasant Valley, near Willoughby, Ohio 8/15/1932 J.R. Traver nymph sloughEphemeroptera Oligoneuriidae Isonychia bicolor Big Alamance Creek, North Carolina 5/19/1929 male, nymph, sloughEphemeroptera Oligoneuriidae Isonychia bicolor Little Alamance Creek, North Carolina 9/18/1929 male, imago, genitalia, legs, nymph sloughEphemeroptera Oligoneuriidae Isonychia bicolor Ringwood Creek, Ellis Hollow, New York 6/11/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia bicolor Banners Elk, North Carolina 6/8/1936 J.R. Traver 2 male, imago, genitalia, wings, legsEphemeroptera Oligoneuriidae Isonychia bicolor Wilseyville, New York August 1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia bicolor Beebe Lake, Ithaca, New York 6/20/1931 C.N. Hardy 3 male, imago, genitalia, legs, nymph sloughEphemeroptera Oligoneuriidae Isonychia bicolor Beebe Lake, Ithaca, New York 7/11/1931 C.N. Hardy male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia bicolor Cantor Creek, Newfield, New York 6/25/1933 J.R. Traver male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia bicolor Ottawa, Ontario, Canada 7/8/1924 G.S. WalleyEphemeroptera Oligoneuriidae Isonychia bicolor Ottawa, Ontario, Canada 10/7/1024 male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia bicolor Valle Crucis, North Carolina 5/30/1935 L.C. Thomsen male, imago, genitalia

Ephemeroptera Oligoneuriidae Isonychia bicolor Chattahoochee River, Atlanta, Georgia 7/4-10/1931 P.W. Fattig male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia bicolor New Windsor, Maryland August 1926 V. Argo 3 male, imago, genitalia, wings, legsEphemeroptera Oligoneuriidae Isonychia bicolor Hatchery, Ithaca, New York 7/2/1932 maleEphemeroptera Oligoneuriidae Isonychia christina Beebe Lake, Ithaca, New York 7/11/1931 C.N. Hardy male, imago, wingsEphemeroptera Oligoneuriidae Isonychia christina Beebe Lake, Ithaca, New York 7/24/1931 C.N. Hardy nymph sloughEphemeroptera Oligoneuriidae Isonychia christina Ottawa, Ontario, Canada 10/7/1924 2 male, imago, genitalia, wings, legsEphemeroptera Oligoneuriidae Isonychia christina Ottawa, Ontario, Canada 8/7/1924 G.S. Walley 4 female + male, body partsEphemeroptera Oligoneuriidae Isonychia christina no locality data 7/28/1924 G.S. Walley female, wingsEphemeroptera Oligoneuriidae Isonychia circe North River, near Tuscaloosa, Alabama 7/2/1936 J.R. Traver female, subimago, subanal plate, legsEphemeroptera Oligoneuriidae Isonychia diversa Knoxville, Tennessee 7/19/1916 G. Ainslee male, subimago, genitaliaEphemeroptera Oligoneuriidae Isonychia diversa Knoxville, Tennessee 7/20/1916 G. Ainslee 2 female, body parts, wingsEphemeroptera Oligoneuriidae Isonychia georgiae Towns Creek, Cleveland, Georgia 7/10/1931 P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Oligoneuriidae Isonychia intermedius Arizona 2/14/1931 C.N. Hardy nymphEphemeroptera Oligoneuriidae Isonychia intermedius Texas Pass, Dragoon, Arizona 7/20/1917 nymphEphemeroptera Oligoneuriidae Isonychia manca College Station, Texas 6/3/1931 J.C. Gaines 3 male, imago + subimago, genitalia, wings, legsEphemeroptera Oligoneuriidae Isonychia manca Manhattan, Kansas August R.H. Pointer male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia manca Lake Austin, Texas February 1933 H.B. Parks Jr. male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia manca New ?, Texas 5/26/1918 J.C. Bradley 2 femaleEphemeroptera Oligoneuriidae Isonychia matilda McLean, New York 8/26/1925 wingsEphemeroptera Oligoneuriidae Isonychia matilda Slaterville, Wildflower Preserve, New York 9/19/1931 J.R. Traver nymph sloughEphemeroptera Oligoneuriidae Isonychia notata Bald Creek, North Carolina 7/6/1930 3 male, nymph, head, mouthparts, legs, gillsEphemeroptera Oligoneuriidae Isonychia pacoleta Pacolet River, North Carolina 7/14/1930 3 female, nymph, head, mouthparts, legs, gillsEphemeroptera Oligoneuriidae Isonychia rufa Chattahoochee River, Atlanta, Georgia 7/4-10/1931 P.W. Fattig male, imago, wingsEphemeroptera Oligoneuriidae Isonychia rufa Goshen, Ohio 6/2/1925 C.R. Crosby male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia rufa Manhattan, Kansas 6/30/1923 R.C. Smith male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia rufa Lawrence, Kansas 6/25/1919 male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia rufa Kellog Creek, Painesville, Ohio 8/14/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia sadleri Ithaca, New York 6/11/1919 female, imago, wingsEphemeroptera Oligoneuriidae Isonychia sadleri Ellis Creek, Ellis Holllow, New York 6/11/1932 J.R. Traver male, imago, wings, nymph sloughEphemeroptera Oligoneuriidae Isonychia sadleri Valle Crucis, North Carolina 5/27/1936 J.R. Traver female, nymph sloughEphemeroptera Oligoneuriidae Isonychia sadleri North River, Tuscaloosa, Alabama 7/2/1936 J.R. Traver female, imago, wingsEphemeroptera Oligoneuriidae Isonychia sadleri Birmingham-Tuscaloosa, Alabama 6/27/1936 J.R. Traver 2 male, imago, genitalia, wingsEphemeroptera Oligoneuriidae Isonychia serratus Allens Creek, North Carolina 7/15/1929 2 female, nymph, head, mouthparts, legsEphemeroptera Oligoneuriidae Isonychia serratus Allens Creek, North Carolina 7/23/1929 female, nymph sloughEphemeroptera Oligoneuriidae Isonychia sicca Fairport, Iowa 2/10/1931 5 female, wings, 10th sterniteEphemeroptera Oligoneuriidae Isonychia sicca Fairport, Iowa 10/24/1930 3 male, imago, genitalia, wings, headEphemeroptera Oligoneuriidae Isonychia sicca Fairport, Iowa 10/23/1930 male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia sicca Fairport, Iowa 10/24/1930 6 female, imago, wings, male, imago, genitalia, wings, headEphemeroptera Oligoneuriidae Isonychia sicca Fairport, Iowa 2/4/1931 C.N. Hardy male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia sicca Fairport, Iowa 2/12/1931 male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia sicca Fairport, Iowa 2/11/1931 C.N. Hardy male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia sicca Fairport, Iowa July 1916 2 female, subimagoEphemeroptera Oligoneuriidae Isonychia sicca Fairport, Iowa 3 female, imago, head, mouthparts, male, imago, genitalia, w Ephemeroptera Oligoneuriidae Isonychia sicca H.E.S. ?, Iowa 10/25/1930 C.N. Hardy 4 male, imago, genitalia, wingsEphemeroptera Oligoneuriidae Isonychia sicca H.E.S. ?, Iowa 11/4/1930 C.N. Hardy male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia sicca H.E.S. ?, Iowa 10/3/1930 C.N. Hardy male, imago, genitaliaEphemeroptera Oligoneuriidae Isonychia sicca Iowa 11/10/1930 C.N. Hardy nymph, legsEphemeroptera Oligoneuriidae Isonychia sicca Rodalusia Chure ?, Iowa 11/16/1930 C.N. Hardy 2 nymphEphemeroptera Oligoneuriidae Isonychia sicca Knoxville, Tennessee 7/19/1916 G. Ainslee male, wingsEphemeroptera Oligoneuriidae Isonychia sicca Andalusia Chute ?, ? 12/2/1930 C.N. Hardy 3 mandibleEphemeroptera Oligoneuriidae Isonychia sicca Howard ?, Iowa 10/10/1930 C.N. Hardy nymph sloughEphemeroptera Oligoneuriidae Isonychia sicca Howard ?, Iowa 10/21/1930 C.N. Hardy nymph, mouthpartsEphemeroptera Oligoneuriidae Isonychia sicca Howard ?, Iowa 10/23/1930 C.N. Hardy nymph, mouthpartsEphemeroptera Oligoneuriidae Isonychia sicca Howard ?, Iowa 11/17/1930 C.N. Hardy nymphEphemeroptera Oligoneuriidae Isonychia sicca no locality data 10/22/1930 C.N. Hardy 3 nymph, mouthparts, legsEphemeroptera Oligoneuriidae Isonychia sicca no locality data July 1916 2 female + male, body partsEphemeroptera Oligoneuriidae Isonychia sicca no locality data female + male, fore legsEphemeroptera Oligoneuriidae Isonychia similis Cedar Creek, North Carolina 7/10/1930 3 female, nymph, head, mouthparts, legs, gillsEphemeroptera Oligoneuriidae Isonychia similis Cedar Creek, North Carolina 7/29/1930 female, nymph sloughEphemeroptera Oligoneuriidae Isonychia thalia Davidson River, North Carolina 6/27/1930 2 female, nymph, mouthparts, gillsEphemeroptera Oligoneuriidae Isonychia thalia Davidson River, North Carolina 7/9/1930 female, nymph sloughEphemeroptera Oligoneuriidae Isonychia tuekaseegee no locality data nymph, legsEphemeroptera Oligoneuriidae Isonychia velma Rogue River, Goldbeach, Oregon 8/7/1935 P.R. Needham male, nymph, genitaliaEphemeroptera Oligoneuriidae Isonychia sp Big Alamance Creek, North Carolina 9/30/1929 2 male, imago, genitalia, wings, legsEphemeroptera Oligoneuriidae Isonychia sp Little Alamance Creek, North Carolina 9/18/1929 2 male, imago, genitalia, wings, legs

Ephemeroptera Oligoneuriidae Isonychia sp Wardensville, West Virginia 7/21/1930 2 male, imago, genitalia, wings, legsEphemeroptera Oligoneuriidae Isonychia sp Kellog Creek, Painesville, Ohio 8/14/1932 J.R. Traver 2 male, imago, genitalia, legs, nymph sloughEphemeroptera Oligoneuriidae Isonychia sp Kellog Creek, Painesville, Ohio 9/11/1932 J.R. Traver male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia sp Smoke Hole, Pendleton County, West Virginia 8/7/1930 C.N. Hardy 4 female + maleEphemeroptera Oligoneuriidae Isonychia sp Hilton, West Virginia 7/16/1930 J.G. Needham 2 male, subimagoEphemeroptera Oligoneuriidae Isonychia sp Chambersburg, Pennsylvania 9/1/1929 V. Argo male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia sp Brush Creek Falls, West Virginia 7/18/1930 J.G. Needham 2 nymph, mouthparts, legsEphemeroptera Oligoneuriidae Isonychia sp Ithaca, New York 6/19/1931 male, imago, wingsEphemeroptera Oligoneuriidae Isonychia sp Paine Creek, Painesville, Ohio 8/19/1929 J.R. Traver male, imago, wingsEphemeroptera Oligoneuriidae Isonychia sp Texas Pass, Dragoon, Arizona 7/20/1917 4Ephemeroptera Oligoneuriidae Isonychia sp Texas Pass, Dragoon, ArizonaEphemeroptera Oligoneuriidae Isonychia sp Bear River, Amalga, Utah 6/30/1926 2 nymph, mouthparts, legsEphemeroptera Oligoneuriidae Isonychia sp Potomac River, south fork, West Virginia 8/10/1930 3 female, imago, 10th sternite, wings, legsEphemeroptera Oligoneuriidae Isonychia sp Fairport, Iowa 6/8/1921 male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia sp Fairport, Iowa October 16 wingsEphemeroptera Oligoneuriidae Isonychia sp Fairport, Iowa 2 female, wings, male, imago, genitalia, legsEphemeroptera Oligoneuriidae Isonychia sp Craigs Chapel, Little Fishing Creek, West Virginia 6/21/1930Ephemeroptera Oligoneuriidae Isonychia sp Wild Cat Creek, Manhattan, Kansas 7/6/1923Ephemeroptera Oligoneuriidae Isonychia sp M.A.R. ?, Michigan wingsEphemeroptera Oligoneuriidae Isonychia sp Lost River, West Virginia 8/12/1930 nymphEphemeroptera Oligoneuriidae Isonychia sp Cacakon, New York 8/13/1930 nymphEphemeroptera Oligoneuriidae Isonychia sp Elk Garden, West Vrginia 8/21/1930 J.G. NeedhamEphemeroptera Oligoneuriidae Isonychia sp Chagrin River, Ohio 8/13/1929 female, imago, wingsEphemeroptera Oligoneuriidae Isonychia sp Wewa, Florida 4/5/1927 2 female, wingsEphemeroptera Oligoneuriidae Isonychia sp Ohio Station 4, Ohio 8/13/1929 8 female + male, body partsEphemeroptera Oligoneuriidae Isonychia sp Ohio Station 6, Ohio 8/23/1929 nymphEphemeroptera Oligoneuriidae Isonychia sp Ohio Station 9, Ohio 8/25/1929 6 female + male, body partsEphemeroptera Oligoneuriidae Isonychia sp Ohio 3 male, imago, genitalia, wings, nymphEphemeroptera Oligoneuriidae Isonychia sp West Virginia Station A, West Virginia 8/6/1930 + 8/7/1930 J.R. Traver 17 female + male, body partsEphemeroptera Oligoneuriidae Isonychia sp West Virginia 5 male, subimago, nymphEphemeroptera Oligoneuriidae Lachlania caecantona ? High Andes, Columbia 3/24/1912 J.T. LoydEphemeroptera Oligoneuriidae Lachlania sp no locality data 3/24/1912 J.T. Loyd 2 male, imago, genitalia, wings, legsEphemeroptera Oligoneuriidae Lachlania sp Gualan/Sualan ?, S ? January 1905 2Ephemeroptera Oligoneuriidae Lachlania sp no locality dataEphemeroptera Oligoneuriidae Oligoneuria anomala Kartabo, British Guiana 4/17/1919 wingsEphemeroptera Oligoneuriidae Oligoneuria anomala no locality data wingsEphemeroptera Oniscigastridae Siphlonella sp Cosquin, Argentina March 8Ephemeroptera Palingeniidae Anagenesia sp China 4/24/1917 Chang male, imago, wingsEphemeroptera Palingeniidae Palingenia robusta Sustan, India maleEphemeroptera Palingeniidae Palingenia sp Matiana, Simba Hills, ? 3Ephemeroptera Palingeniidae Palingenia sp Seistan Com., ? A.H. McMahen male, imago, wingsEphemeroptera Palingeniidae Pentagenia 4-punctata Andalusia Chute ?, ? 2Ephemeroptera Palingeniidae Pentagenia 4-punctata Iowa 7/1/1916Ephemeroptera Palingeniidae Pentagenia 4-punctata no locality data 2Ephemeroptera Palingeniidae Pentagenia vittigera Manhattan, Kansas April-October 1933 R.C. Smith female, imago, head, mouthpartsEphemeroptera Palingeniidae Pentagenia vittigera College Station, Texas 5/4/1931 V.A. Little female, imago, wingsEphemeroptera Palingeniidae Pentagenia vittigera Fairport, Iowa August 1916 H.E. Schraedick male, imago, genitaliaEphemeroptera Palingeniidae Pentagenia vittigera Fairport, IowaEphemeroptera Palingeniidae Pentagenia vittigera no locality data June 27 male, imago, wingsEphemeroptera Palingeniidae Pentagenia sp Hamilton, Illinois July 12 wingsEphemeroptera Palingeniidae Pentagenia sp no locality data mouthpartsEphemeroptera Polymitarcyidae Asthenopus albicans Kartabo, Bartica, British Guiana 4/20/1919 CU Entomological Expedition 3 male, imago, genitalia, wingsEphemeroptera Polymitarcyidae Asthenopus amazonicus Kwakoegron, Saranacca River, Surinam 6/8/1927 CU Entomological Expedition 3 male, imago, genitalia, female + male, imago, wingsEphemeroptera Polymitarcyidae Campsurus argentinus Pirapora, Brazil November 11 femaleEphemeroptera Polymitarcyidae Campsurus cuyuniensis Cuyuni, British Guiana 7/23/1924 W.A. Myers male, imago, wingsEphemeroptera Polymitarcyidae Campsurus decoloratus Weslaco, Texas 5/19/1930 S.W. Clarke wingsEphemeroptera Polymitarcyidae Campsurus decoloratus Weslaco, Texas 5/2/1931 S.W. Clarke 2 geniralia, wingsEphemeroptera Polymitarcyidae Campsurus decoloratus Weslaco, Texas S.W. Clarke 5 male, imago, genitalia, wings, legsEphemeroptera Polymitarcyidae Campsurus duplicatus South America CU Entomological Expedition male, imago, genitaliaEphemeroptera Polymitarcyidae Campsurus emersoni Barro Colorado Island, Panama 7/7/1935 A. Emerson 2 male, imago, genitalia, wingsEphemeroptera Polymitarcyidae Campsurus latipennis British Guiana 4/5/1913 2 male, imago, genitalia, wingsEphemeroptera Polymitarcyidae Campsurus lucidus Rockstone, Esequeba River, British Guiana 6/30/1927 CU Entomological Expedition 2 male, imago, genitaliaEphemeroptera Polymitarcyidae Campsurus lucidus Rockstone, Esequeba River, British Guiana 6/25/1927 male, imago, genitaliaEphemeroptera Polymitarcyidae Campsurus lucidus Georgetown, British Guiana 4/22/1913 CU Entomological Expedition 2 male, imago, genitalia, wingsEphemeroptera Polymitarcyidae Campsurus lucidus Bartica, British Guiana Parish 2 male, imago, genitalia

Ephemeroptera Polymitarcyidae Campsurus lucidus South America male, imago, genitaliaEphemeroptera Polymitarcyidae Campsurus major Buenos Aires, Argentina 12/16/1898 Baer 5 male, imago, genitalia, wingsEphemeroptera Polymitarcyidae Campsurus segnis Kartabo, British Guiana 7/25/1924 CU Entomological Expedition male, imago, wingsEphemeroptera Polymitarcyidae Campsurus segnis Rockstone, Esequebo River, British Guiana 6/26/1927 P.P. Babiy male, imago, genitaliaEphemeroptera Polymitarcyidae Campsurus sp Rockstone, Esequebo River, British Guiana 6/25/1927 CU Entomological Expedition 3 male, imago, genitalia, wingsEphemeroptera Polymitarcyidae Campsurus sp Rockstone, Esequebo River, British Guiana 6/30/1927 CU Entomological Expedition 2 male, imago, genitalia, wingsEphemeroptera Polymitarcyidae Campsurus sp Zahderij Island, Boven, Surinam 4/22/1927 CU Entomological Expedition female, imago, wingsEphemeroptera Polymitarcyidae Campsurus sp Bartica, British Guiana CU Entomological Expedition male, imago, genitaliaEphemeroptera Polymitarcyidae Ephoron album Rock Creek, hatchery, Parks, Nebraska 7/25/1931 female, wingsEphemeroptera Polymitarcyidae Ephoron album Gindi, Lake Winnipeg, Manitoba, Canada 8/16/1930 F. Neave 2 male, imago, genitalia, wingsEphemeroptera Polymitarcyidae Ephoron leukon Harpers Ferry, Potomac River, Maryland 8/3/1926 V. Argo 2 male, imago, genitalia, wingsEphemeroptera Polymitarcyidae Ephoron leukon New Windsor, Maryland August 1929 V. Argo subimago, wingsEphemeroptera Polymitarcyidae Ephoron leukon Lierre Creek, Quebec, Canada 9/9/1928 F.P. Ide male, imago, genitaliaEphemeroptera Polymitarcyidae Ephoron sp Bluestone River, West Virginia 7/16/1930 J.G. Needham nymph, mouthpartsEphemeroptera Polymitarcyidae Ephoron sp White Hose Pike, Trenton ?, New Jersey 7/25/1931 L. Harper female, wingsEphemeroptera Polymitarcyidae Tortopus incertus Macon, Georgia August 1932 P.W. Fattig female, imago, wingsEphemeroptera Polymitarcyidae Tortopus incertus Georgia P.W. Fattig wingsEphemeroptera Polymitarcyidae Tortopus sp Kartabo, British Guiana 4/20/1919 CU Entomological Expedition male, subimago, wingsEphemeroptera Polymitarcyidae Tortopus sp Mississippi River, ? wingsEphemeroptera Potamanthidae Potamanthus diaphanus Conococheague River, Maryland 6/3/1925 V. Argo male, imago, wingsEphemeroptera Potamanthidae Potamanthus distinctus Davidson River, Pisgah Forest, North Carolina 6/20/1936 J.R. Traver nymph, entireEphemeroptera Potamanthidae Potamanthus distinctus Davidson River, Pisgah Forest, North Carolina 6/26/1936 J.R. Traver nymph, mouthpartsEphemeroptera Potamanthidae Potamanthus distinctus Davidson River, Pisgah Forest, North Carolina 6/27/1936 J.R. Traver female, nymph sloughEphemeroptera Potamanthidae Potamanthus myops Elkhart, Indiana 6/18/1901 Weith male, imago, genitaliaEphemeroptera Potamanthidae Potamanthus rufus Sioux River, Buena Vista County, Iowa 7/6/1931 T.M. Parsons nymph, entireEphemeroptera Potamanthidae Potamanthus walkeri Potomac River, Brunswick, Maryland 6/19/1926 V. Argo female + male, nymph, entireEphemeroptera Potamanthidae Potamanthus sp Knoxville, university campus, Tennessee 6/22/1931 L. Shipe male, imago, genitaliaEphemeroptera Potamanthidae Potamanthus sp Fairport, Iowa 7/1/1931 male, imago, genitaliaEphemeroptera Potamanthidae Potamanthus sp Laurel River, North Carolina 6/29/1930 nymph, head, mouthparts, legsEphemeroptera Potamanthidae Potamanthus sp Swannanoa River, north fork, North Carolina 6/30/1930 female, subimago, wingsEphemeroptera Potamanthidae Potamanthus sp Penrose, North Carolina 7/19/1930 female, imago, wingsEphemeroptera Potamanthidae Potamanthus sp Conococheague River, Maryland 6/3/1925 V. Argo male, imago, genitaliaEphemeroptera Siphlonuridae Ameletus dissitus Alameda County, California 4/2/1921 male, imago, genitaliaEphemeroptera Siphlonuridae Ameletus dissitus Alameda County, California 4/3/1921 E.C. van Dyke male, imago, wingsEphemeroptera Siphlonuridae Ameletus lineatus Big Alamance Creek, North Carolina 2/20/1930 4 female, subimago, subanal plate, wings, elgs, nymph, head Ephemeroptera Siphlonuridae Ameletus lineatus Big Alamance Creek, North Carolina 2/25/1930 nymph sloughEphemeroptera Siphlonuridae Ameletus ludens McLean, New York 5/22/1922 2 nymph, head, mouthparts, legsEphemeroptera Siphlonuridae Ameletus ludens McLean, New York 5/17/1924 2 female, nymph, mouthpartsEphemeroptera Siphlonuridae Ameletus ludens Newport, New York 5/22/1902 4Ephemeroptera Siphlonuridae Ameletus ludens McCorn Creek, Chemung County, New York 4/7/1976 nymph, mouthpartsEphemeroptera Siphlonuridae Ameletus ludens Ringwood, New York 5/31/1932 J.R. Traver female, imago, mouthpart rudimentsEphemeroptera Siphlonuridae Ameletus ornatus New Zealand TillyardEphemeroptera Siphlonuridae Ameletus shepherdi Waddel Creek, California D. Shepherd 3 male, imago, genitalia, legs, subimago, genitaliaEphemeroptera Siphlonuridae Ameletus sparsatus Yellowstone National Park, Wyoming 8/18/1921 nymph sloughEphemeroptera Siphlonuridae Ameletus sparsatus Yellowstone River, Wyoming 8/24/1931 Matkowski male, imago, wingsEphemeroptera Siphlonuridae Ameletus sparsatus Yellowstone River, Wyoming 8/18/1931 Matkowski male, subimago, genitaliaEphemeroptera Siphlonuridae Ameletus tarteri McCorn Creek, Chemung County, New York 4/7/1976 nymph, mouthpartsEphemeroptera Siphlonuridae Ameletus velox San Antonio County, California 5/12/1923 T.M. R. 2Ephemeroptera Siphlonuridae Ameletus velox Mohave Reserve, Victorville, ? 3/31/1923 T.M. R.Ephemeroptera Siphlonuridae Ameletus velox Andreas Canyon, California 3/25/1923 T.M. R.Ephemeroptera Siphlonuridae Ameletus velox Cuenmonod County ?, California 3/30/1923 T.M. R.Ephemeroptera Siphlonuridae Ameletus velox no locality data G.S. DoddsEphemeroptera Siphlonuridae Ameletus sp Waddell Creek, California 11/30/1932Ephemeroptera Siphlonuridae Ameletus sp Highlands, Nort Carolina 4/7/1929 2 nymph, entire, head, legsEphemeroptera Siphlonuridae Ameletus sp Glacier National Park, Montana 6/16/1932 M.J. M. nymph, mouthpartsEphemeroptera Siphlonuridae Ameletus sp Glacier National Park, Montana 8/15/1932 A.S. H. female, subanal plateEphemeroptera Siphlonuridae Ameletus sp Big Alamance Creek, North Carolina 3/10/1929 nymphEphemeroptera Siphlonuridae Ameletus sp Big Alamance Creek, North Carolina 3/28/1929 2 female, subimago, 9th segment, wings, legsEphemeroptera Siphlonuridae Ameletus sp Petersons Spring, Logan River, Utah 7/26/1926 2Ephemeroptera Siphlonuridae Ameletus sp Temple Fork, Logan River, Utah 6/29/1926Ephemeroptera Siphlonuridae Ameletus sp Fayetteville, Arkansas March 1931 W.J. Baerg 4 female, imago, head, mouthparts, subimago, mouthparts, wEphemeroptera Siphlonuridae Ameletus sp Walnut Flats, Big Creek, great Smokie Mountains Nat 4/7/1934 J.G. Needham male, nymph, genitaliaEphemeroptera Siphlonuridae Ameletus sp Stanford University, California male, subimago, genitaliaEphemeroptera Siphlonuridae Ameletus sp McLean Reserve, New York 5/17/1924Ephemeroptera Siphlonuridae Ameletus sp Barro Colorado Island, Panama female, nymph

Ephemeroptera Siphlonuridae Ameletus sp locality not readable 8/15/1932 A.S. Howard female, wingsEphemeroptera Siphlonuridae Metamonius sp Puerto Vanus, Chile 2 nymphEphemeroptera Siphlonuridae Nesameletus flavitinctus New Zealand Tillyard 4 female, imago, head, mouthparts, wings, subimago, wings, Ephemeroptera Siphlonuridae Parameletus midas Thunder River, Quebec, Canada 6/19/1930 J.W. Brown 6 female, imago, head, mouthparts, male, imago, genitalia, w Ephemeroptera Siphlonuridae Siphlonisca aerodromia Sport Island, Sacandaga River, New York C.P. Alexander female, imago, head, mouthpartsEphemeroptera Siphlonuridae Siphlonisca aerodromia Sacandaga River, New York C.P. AlexanderEphemeroptera Siphlonuridae Siphlonisca aerodromia Lake Melville, Labrador, Canada 7/10/1952 W.Z. Lidicker male, imago, genitaliaEphemeroptera Siphlonuridae Siphlonisca aerodromia no locality dataEphemeroptera Siphlonuridae Siphlonurus alternatus Saranac Inn, New York 7/2/1900 male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus alternatus Fall Creek, Ithaca, New York 1924 male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus alternatus Old Forge, New York 6/24/1905 male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus alternatus no locality data 2 male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus annulatus Quebec, Canada maleEphemeroptera Siphlonuridae Siphlonurus barbaroides Beaver Creek, Chicago Bog, near McLean, New York 6/13/1935 J.R. Traver male, imago, genitaliaEphemeroptera Siphlonuridae Siphlonurus barbaroides McLean, New York 6/4/1934 J.R. Traver male, imago, genitaliaEphemeroptera Siphlonuridae Siphlonurus barbaroides Ithaca, New York 6/5/1914 male, subimago, genitaliaEphemeroptera Siphlonuridae Siphlonurus berenice Skinner, Maine 7/1/1931 A.E. Brower male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus berenice Liberty, New York 6/2/1930 male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus berenice Chipmunk Swamp, Vandalia, New York 6/8-10/1915 male, subimago, genitaliaEphemeroptera Siphlonuridae Siphlonurus berenice Kent Falls, Connecticut 5/31/1931 C.P. Alexander male, imago, genitaliaEphemeroptera Siphlonuridae Siphlonurus berenice Owego Creek, near Slaterville, New York 6/25/1924 male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus berenice Owego Creek, near Slaterville, New York 6/23/1924 female, wingsEphemeroptera Siphlonuridae Siphlonurus berenice Pennsylvania 6/7/1930 J.G. Needham 3 female + maleEphemeroptera Siphlonuridae Siphlonurus columbianus Yosemite Valley, California 7/5-6/1927 E.H. Nast 2 male, imago, genitalia, wings, legsEphemeroptera Siphlonuridae Siphlonurus decorus Goshen Swamp, North Carolina 4/2/1929 J.G. Needham 10 female, imago, 7th, 9th, 10th sternites, male, imago, genital Ephemeroptera Siphlonuridae Siphlonurus marginatus Lake near Liberty, North Carolina 4/23/1929 2 nymph, head, mouthparts, legsEphemeroptera Siphlonuridae Siphlonurus marginatus Lake near Liberty, North Carolina 5/1/1929 4 male, imago, genitalia, wings, legs, nymph sloughEphemeroptera Siphlonuridae Siphlonurus marshalli Imboden, Arkansas 4/6/1927 B.C. Marshall 4 male, imago, genitalia, wings, legsEphemeroptera Siphlonuridae Siphlonurus mirus Sport Island, Sacandaga River, New York 6/15/1910 3Ephemeroptera Siphlonuridae Siphlonurus mirus Sport Island, Sacandaga River, New York C.P. Alexander wingsEphemeroptera Siphlonuridae Siphlonurus mirus Lake near Liberty, North Carolina 3/24/1929 2 nymph, mouthpartsEphemeroptera Siphlonuridae Siphlonurus mirus Lake near Liberty, North Carolina 4/15/1930 male, subimago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus mirus Fishbone, New York 5/30/1914 3Ephemeroptera Siphlonuridae Siphlonurus mirus Sandy Creek, Georgia 4/28/1931 P.W. Fattig 2 male, imago, genitalia, wings, legsEphemeroptera Siphlonuridae Siphlonurus occidentalis Glacier National Park, Montana 7/2/1932 A.S. Hazzard female, imago, third clawEphemeroptera Siphlonuridae Siphlonurus occidentalis St. Marys Lake, Glacier National Park, Montana 7/22/1932 A.S. Hazzard male, subimago, genitaliaEphemeroptera Siphlonuridae Siphlonurus occidentalis Santa Fe, New Mexico 6/1/1904 2 maleEphemeroptera Siphlonuridae Siphlonurus occidentalis Pikes Peak, Colorado August 1923Ephemeroptera Siphlonuridae Siphlonurus occidentalis Pikes Peak, Colorado June 1932 R.T. Gilmore male, imago, genitaliaEphemeroptera Siphlonuridae Siphlonurus occidentalis Yellowstone Lake, Wyoming July 1916 P.R. Needham male, imago, genitaliaEphemeroptera Siphlonuridae Siphlonurus occidentalis Flathead Lake, Montana 8/2/1932 R.T. Young male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus occidentalis Centennial, Wyoming 7/16/1933 Blake male, imago, genitaliaEphemeroptera Siphlonuridae Siphlonurus occidentalis Raneh, Hayney County, Oregon 5/4/1922 W.J. Chamberlin male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus occidentalis Yellowstone Park, Wyoming 1891 maleEphemeroptera Siphlonuridae Siphlonurus occidentalis Florissant, ? 6/30/1907 3 female + maleEphemeroptera Siphlonuridae Siphlonurus occidentalis Pikes Peak, Colorado Springs, Colorado wingsEphemeroptera Siphlonuridae Siphlonurus occidentalis ColoradoEphemeroptera Siphlonuridae Siphlonurus quebecensis Chelsea, Quebec, Canada 6/20/1916 W.T.M. Forbes 2 male, imago, genitalia, wingsEphemeroptera Siphlonuridae Siphlonurus quebecensis Nassau, New York 6/7/1931 L.C. Harper male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus quebecensis Bar Harbor, Maine 6/18/1932 A.E. Brower male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus quebecensis Lake near Liberty, North Carolina 3/23/1930 male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus quebecensis Hamburg Lake, North Carolina 4/1/1929 male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus quebecensis Raymond, New Hampshire 6/8/1928 P.R. Lowry male, imago, genitaliaEphemeroptera Siphlonuridae Siphlonurus quebecensis Ithaca, New York 6/12/1932 J.R. Traver male, imago, genitaliaEphemeroptera Siphlonuridae Siphlonurus quebecensis Elkhart, IndianaEphemeroptera Siphlonuridae Siphlonurus rapidus Mt. Hope Brook, Fort Anne, New York 6/23/1929 P.R. Needham male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus rapidus Beaver Creek, Chicago Bog, near McLean, New York 6/13/1935 M.E. Davis male, imago, genitaliaEphemeroptera Siphlonuridae Siphlonurus rapidus McLean, New York 6/4/1934 J.R. Traver male, imago, genitaliaEphemeroptera Siphlonuridae Siphlonurus rapidus Black Brook, Clinton County, New York 6/10/1933 C.R. Crosby + H. Dietrich male, imago, genitaliaEphemeroptera Siphlonuridae Siphlonurus rapidus M.A.C. ?, Michigan male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus rapidus Stamford, Connecticut 6/10/1931 Bromley male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus rapidus locality not readable 6/20/1907 maleEphemeroptera Siphlonuridae Siphlonurus rapidus no locality data male, imago, genitalia, legsEphemeroptera Siphlonuridae Siphlonurus securifer Amherst, Massachusetts 6/2/1931 C.P. Alexander male, subimago, genitaliaEphemeroptera Siphlonuridae Siphlonurus spectabilis Palo Alto, California 5/10/1892 female, wings

Ephemeroptera Siphlonuridae Siphlonurus spectabilis no locality data 3 male, imago, genitalia, wings, legs, nymph, mouthpartsEphemeroptera Siphlonuridae Siphlonurus sp Logan River, Utah 7/24/1926 nymphEphemeroptera Siphlonuridae Siphlonurus sp Palo Alto, California 5/10/1892 body partsEphemeroptera Siphlonuridae Siphlonurus sp Lake Tahoe, California 6/26/1925 2 male, imago, genitalia, wings, legsEphemeroptera Siphlonuridae Siphlonurus sp Santa Fe, New Mexico 6/1/1904 P.B. P. 7 female + maleEphemeroptera Siphlonuridae Siphlonurus sp ColoradoEphemeroptera no family no genus sp Lunugalla ?, Sri Lanka July 1907 3Ephemeroptera no family no genus sp Lunugalla ?, Sri Lanka 2Ephemeroptera no family no genus sp Columbia 1917 E.B. WilliamsonEphemeroptera no family no genus sp locality not readable 1918