abacion wilhelminae millipede - wildlifearkansas.com invertebrates.pdf · apochthonius titanicus...

Terrestrial Invertebrate Report

State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains

South Central Plains

Mississippi Alluvial Plain

Mississippi Valley Loess Plain

Class:

Order:

Family:

Diplopoda

Callipodida

Abacionidae

DistributionOccurrence Records

Abacion wilhelminaeMillipede

Priority Score:

S1 — Critically imperiled in Arkansas

GNR — Not yet ranked

23

Ecoregions where the species occurs:

Population Trend: Unknown

out of 100

Ozark Highlands


782


Habitat Map

Problems Faced

Habitat destruction. Threat: Habitat destructionSource:

Data Gaps/Research Needs

Life history, status surveys and basic biological information needs to be obtained.

ImportanceConservation Actions Category

More data are needed to determine conservation actions.

Data GapMedium

Comments

Endemic millipede of the Ouachita Mountains of Arkansas (Robison and Allen 1995).

Taxa Association Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner


783

Aquatic/Terrestrial Invertebrate Report

State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains



Mississippi Valley Loess Plains

Ozark Highlands

Class:

Order:

Family:

Malacostraca

Amphipoda

Crangonyctidae

DistributionElement Occurrence Records

Allocrangonyx hubrichtiHubricht's Long-tailed Amphipod

Priority Score:

S1? — Critically imperiled in Arkansas (inexact numeric rank)

G2G3 — Imperiled (uncertain rank)

42



out of 100


784


Terrestrial Habitats

Ecobasins where this species occurs

Ecobasins

Arkansas Valley - White River


Caves, Mines, Sinkholes and other Karst Features Obligate

Aquatic Habitats

Natural Cave Stream: Headwater - Small Suitable

Natural Groundwater: Optimal

Natural Seep: Headwater - Small Suitable

Natural Spring Run: Headwater - Small Marginal


785


Problems Faced

Threat: SedimentationSource: Urban development

Threat: Toxins/contaminantsSource: Urban development


Obtain baseline information on distribution and population status, and confirm validity of occurrence record in Arkansas Valley.


Maintain groundwater quality. Habitat ProtectionMedium

Protect cave habitat and recharge zone from development or disturbance.

Habitat ProtectionMedium

Monitoring Strategies

Additional information is needed before a monitoring strategy can be developed.

Comments

Crustacean.This species' distribution may not be resticted to caves. In Missouri, it has been documented from benthic stream habitats (personal communication, Mike E. Slay).

Taxa Team and Peer ReviewersANHC Mr. Michael Warriner, AGFC Mr. Brian Wagner


786


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Gastropoda

Neotaenioglossa

Hydrobiidae


Amnicola coraFoushee Cavesnail

Priority Score:


G1 — Critically imperiled species

80



out of 100


787




Ecobasins

Ozark Highlands - White River



Aquatic Habitats

Natural Cave Stream: Headwater - Small Obligate


788


Problems Faced

Threat: Habitat disturbanceSource: Recreation


Threat: Toxins/contaminantsSource: Municipal/Industrial point source


Determine life history information.

Obtain baseline information on distribution and population status.



Data GapMedium


More data are needed before a monitoring strategy can be developed.

Comments

A cave-obligate snail only known from Foushee Cave in Independence County (Hubricht 1979).



789


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Arachnida

Pseudoscorpiones

Chthoniidae


Apochthonius diabolusCave Obligate Pseudoscorpion

Priority Score:


G1G2 — Critically imperiled (uncertain rank)

65



out of 100

Ozark Highlands


790


Habitat Map

Habitats Weight


Problems Faced

Development/disturbance of cave habitat and recharge zone.

Threat: Habitat destruction or conversionSource: Urban development

Groundwater contamination. Threat: Toxins/contaminantsSource: Urban development






Survey for additional populations and monitor known occurrences

Comments

Pseudoscorpion. No information available.



791


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Arachnida

Pseudoscorpiones

Chthoniidae


Apochthonius titanicusCave Obligate Pseudoscorpion

Priority Score:



65



out of 100

Ozark Highlands


792


Habitat Map

Habitats Weight


Problems Faced





No data gaps or research needs were identified.






Survey for additional populations and monitor known occurrences.


793


Comments

Pseudoscorpion.



794


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Amphipoda

Crangonyctidae


Bactrurus pseudomucronatusAmphipod

Priority Score:



42



out of 100


795




Ecobasins




Aquatic Habitats


Natural Groundwater: Obligate


796


Problems Faced





Evaluate taxonomic relationships.

Survey for additional populations.







Comments

This crustacean species is one of the largest groundwater amphipods in North America (personal communication, Mike E. Slay).



797


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Isopoda

Asellidae


Caecidotea ancylaIsopod

Priority Score:

S2 — Imperiled in Arkansas

G3G4 — Vulnerable (uncertain rank)

27



out of 100


798




Ecobasins

Boston Mountains - Arkansas River

Boston Mountains - White River

Ozark Highlands - Arkansas River





799


Aquatic Habitats

Natural Cave Stream: Headwater - Small Optimal




Problems Faced

Threat: Habitat disturbanceSource: Urban development

Threat: Nutrient loadingSource: Urban development




Survey for baseline information on distribution and population status.



Data GapMedium



Comments

Crustacean. This species is a cave-adapted aquatic isopod.



800


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Isopoda

Asellidae


Caecidotea dimorphaIsopod

Priority Score:



38



out of 100


801




Ecobasins







802

Aquatic Invertebrate Report

State Rank:

Gobal Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Isopoda

Asellidae


Caecidotea fonticulus

Isopod

Priority Score:



23



out of 100

Caecidotea fonticulusIsopod

803


Ecobasins where the species occurs

Ecobasins

Ouachita Mountains - Ouachita River

Habitats Weight

Natural Groundwater: Headwater - Small Data Gap

Natural Seep: Headwater - Small Data Gap

Natural Spring Run: Headwater - Small Obligate

Problems Faced

Threat: Habitat destruction or conversionSource: Forestry activities



Need to obtain baseline information on distribution and population status.



Data GapMedium


Surveys to locate additional populations and protection of stream habitats.

Comments

An Arkansas endemic isopod known only from Abernathy Spring in Polk County (Lewis 1983).


Caecidotea fonticulusIsopod

804


Aquatic Habitats


Natural Groundwater: Headwater - Small Optimal



Problems Faced









Data GapMedium



Comments

Crustacean. This species is a cave-adapted aquatic isopod.



805


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Isopoda

Asellidae


Caecidotea macropropodaBat Cave Isopod

Priority Score:



38



out of 100


806




Ecobasins






807


Aquatic Habitats





Problems Faced









Data GapMedium



Comments

Crustacean.



808


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Isopoda

Asellidae


Caecidotea oculataIsopod

Priority Score:



42



out of 100


809




Ecobasins




Aquatic Habitats

Natural Cave Stream: Headwater - Small Data Gap

Natural Groundwater: Data Gap


Natural Spring Run: Headwater - Small Obligate


810


Problems Faced









Data GapMedium



Comments

Crustacean.



811


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Isopoda

Asellidae


Caecidotea salemensisIsopod

Priority Score:


G4 — Apparently secure species

27



out of 100


812




Ecobasins




Aquatic Habitats






813


Problems Faced









Data GapMedium



Comments

Crustacean.



814


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Isopoda

Asellidae


Caecidotea simulatorCave Obligate Isopod

Priority Score:



42



out of 100


815




Ecobasins




Aquatic Habitats

Natural Cave Stream: Headwater - Small Data Gap

Natural Groundwater: Obligate


Natural Spring Run: Headwater - Small Data Gap


816


Problems Faced













Comments

This crustacean species is one of the rarest aquatic cave-adapted isopods in Arkansas.



817


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Isopoda

Asellidae


Caecidotea steevesiIsopod

Priority Score:



31



out of 100


818




Ecobasins






819


Aquatic Habitats





Problems Faced









Data GapMedium



Comments

This crustacean species is a cave-adapted aquatic isopod.



820


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Isopoda

Asellidae


Caecidotea stiladactylaIsopod

Priority Score:

S3 — Vulnerable in Arkansas


23



out of 100


821




Ecobasins







822


Aquatic Habitats


Natural Groundwater: Headwater - Small Optimal



Problems Faced









Data GapMedium



Comments

This crustacean species is a cave-adapted aquatic isopod.



823


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Arachnida

Opiliones

Phalangodidae


Crosbyella distinctaCave Obligate Harvestman

Priority Score:



65



out of 100

Ozark Highlands


824


Habitat Map

Habitats Weight


Problems Faced










Comments

Arachnid.



825


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Arachnida

Opiliones

Phalangodidae


Crosbyella roeweriCave Obligate Harvestman

Priority Score:



65



out of 100

Ozark Highlands


826


Habitat Map

Habitats Weight


Problems Faced










Comments

Arachnid.



827


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Gastropoda

Stylommatophora

Polygyridae


Daedalochila peregrinaWhite Liptooth

Priority Score:

SNR — Species not ranked in Arkansas

G2 — Imperiled species

34



out of 100

Ozark Highlands


828


Habitat Map

Habitats Weight

Ozark-Ouachita Mesic Hardwood Forest Data Gap



Data GapMedium



Comments

Terrestrial snail. (Turgeon and others 1998)



829


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Turbellaria

Tricladida

Dendrocoelidae


Dendrocoelopsis americanaCave Obligate Planarian

Priority Score:



42



out of 100


830




Ecobasins






Caves, Mines, Sinkholes and other Karst Features Optimal


831


Aquatic Habitats



Natural Seep: Headwater - Small Optimal

Natural Spring Run: Headwater - Small Optimal

Problems Faced








Maintain groundwater quality. Habitat Restoration/ImprovementMedium





Comments

Flatworm.



832


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Oligochaeta

Opisthopora

Acanthodrilidae


Diplocardia meansiEarthworm

Priority Score:

S2S3 — Imperiled species in Arkansas (uncertain rank)


17



out of 100

Ozark Highlands


833


Habitat Map

Habitats Weight

Ozark-Ouachita Mesic Hardwood Forest Suitable

Problems Faced

Habitat degradation/disturbance. Threat: Habitat disturbanceSource: Forestry activities




Limit soil disturbance. Habitat ProtectionHigh

Suspend application of herbicides where this species occurs.




Comments

The second largest earthworm in the United States, D. meansi is an Arkansas endemic only known from the slopes of Rich Mountain (Gates 1977).



834


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Gastropoda

Stylommatophora

Pupillidae


Gastrocopta rogersensisLand Snail

Priority Score:



27



out of 100

Ozark Highlands


835


Habitat Map

Habitats Weight

Ozark-Ouachita Cliff and Talus Optimal

Problems Faced

Forestry practices that disturb litter layer and create xeric conditions.

Threat: Habitat disturbanceSource: Forestry activities


Need to assess population status of known occurrences.



Data GapMedium


Survey areas near known occurrences to locate additional populations.

Comments

A regionally endemic (Arkansas, Missouri) terrestrial snail that occupies habitat in and along bluff lines (Nekola and Coles 2001).



836


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Arachnida

Pseudoscorpiones

Chernetidae


Hesperochernes occidentalisPseudoscorpion

Priority Score:


G5 — Secure

23



out of 100

Ozark Highlands


837


Habitat Map

Habitats Weight


Problems Faced

Disturbance of cave habitat and recharge zone. Threat: Habitat disturbanceSource: Recreation

Groundwater contamination. Threat: Toxins/contaminantsSource: Municipal/Industrial point source










838


Comments

An Arkansas endemic species, this pseudoscorpion is only known from Fincher and Carrol Caves in Washington County (Hoff and Bolsterti 1956).



839


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Gastropoda

Stylommatophora

Polygyridae


Inflectarius magazinensisMagazine Mountain Shagreen

Priority Score:



80



out of 100

Ozark Highlands


840


Habitat Map

Habitats Weight


Problems Faced

Development or activities that alter talus slopes where this species occurs.


Development or activities that alter talus slopes where this species occurs.

Threat: Habitat disturbanceSource: Recreation


Need to assess population status of known occurrences.


Protect known occurrences from development or activities that could alter talus slopes.

Habitat ProtectionHigh




841


Comments

An Arkansas endemic species only known from sites on Magazine Mountain in Logan County (Pilsbry and Ferriss 1906).



842


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Isopoda

Asellidae


Lirceus bicuspidatusIsopod

Priority Score:


G3Q — Vulnerable (questionable taxonomy)

31



out of 100


843




Ecobasins

Arkansas Valley - Arkansas River



Ouachita Mountains - Arkansas River



Caves, Mines, Sinkholes and other Karst Features Optimal


844


Aquatic Habitats

Natural Cave Stream: Headwater - Small Suitable


Natural Spring Run: Headwater - Small Optimal

Problems Faced

Threat: SedimentationSource: Resource extraction




Determine validity of location data for records in Arkansas Valley and Ouachita Mountains.

Surveys to locate additional populations.



Data GapMedium



Comments

This isopod inhabits a variety of biotopes including small seep/springs and streams, and cave streams. Nothing more is known about the biology of this species, except that it is widely known from the mountainous region of Arkansas. (ANHI 2003, Robison and Allen, 1995)



845


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Isopoda

Asellidae


Lirceus bidentatusIsopod

Priority Score:


G1? — Critically imperiled (inexact numeric rank)

80



out of 100


846




Ecobasins




Aquatic Habitats






847


Problems Faced

Threat: SedimentationSource: Forestry activities




Determine taxonomic status. Validity of this species is in question.




Data GapMedium



Comments

This Arkansas endemic isopod is only known from a seep in the Ozark Mountains of Boone County (Hubricht and Mackin 1949).



848


State Rank:

Gobal Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Gastropoda

Neotaenioglossa

Hydrobiidae


Marstonia ozarkensis

Ozark Pyrg

Priority Score:



80



out of 100

Marstonia ozarkensisOzark Pyrg

849



Ecobasins


Problems Faced

Threat: Source:


Conduct distribution and abundance studies.



Data GapMedium



Comments

Freshwater snail reclassified as Marstonia ozarkensis (Hershler and Thompson 1987, Thompson and Hershler 2002, Turgeon and others 1998).


Marstonia ozarkensisOzark Pyrg

850


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Gastropoda

Stylommatophora

Zonitidae


Paravitrea aulacogyraStriate Supercoil

Priority Score:

SH — Historic record. Possibly extirpated in Arkansas

GHQ — Historic record of questionable taxonomy

80



out of 100

Ozark Highlands


851


Habitat Map

Habitats Weight


Problems Faced

Forestry practices that disturb litter layer and create xeric conditions.


Loss of habitat to development. Threat: Habitat destruction or conversionSource: Recreation





Data GapMedium


Survey areas near known occurrences to locate additional populations.


852


Comments

An Arkansas endemic species, this terrestrial snail is known only from a site on the northern summit of Magazine Mountain in Logan County (Pislbry and Ferriss 1906).



853


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Gastropoda

Stylommatophora

Polygyridae


Patera clenchiCalico Rock Oval

Priority Score:



65



out of 100

Ozark Highlands


854


Habitat Map



Data GapMedium



Comments

Terrestrial snail. (Turgeon and others 1998).



855


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Elliplura

Collembola

Entomobryidae


Pseudosinella dubiaSpringtail

Priority Score:



50



out of 100

Ozark Highlands


856


Habitat Map

Habitats Weight


Problems Faced

Disturbed litter layer creates xeric conditions. Threat: Habitat disturbanceSource: Forestry activities

Loss of habitat to development. Threat: Habitat destruction or conversionSource: Urban development




Survey for additional populations.



Data GapMedium




857


Comments

Collembola.



858


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Elliplura

Collembola

Entomobryidae


Pseudosinella testaShelled Cave Springtail

Priority Score:



27



out of 100

Ozark Highlands


859


Habitat Map

Habitats Weight


Problems Faced



Groundwater contamination. Threat: Habitat disturbanceSource: Urban development











860


Comments

Collembola.



861


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Elliplura

Collembola

Sminthuridae


Pygmarrhopalites clarusSpringtail

Priority Score:

S1S2 — Critically imperiled in Arkansas (uncertain rank)


25



out of 100

Ozark Highlands


862


Habitat Map

Habitats Weight


Problems Faced












More data is needed before a monitoring strategy can be developed.


863


Comments

Collembola. This is a terrestrial cave adapted springtail that is only known from caves in the Ozarks (personal communication, Mike E. Slay).



864


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Elliplura

Collembola

Hypogastruridae


Schaefferia alabamensisCave Obligate Springtail

Priority Score:



50



out of 100

Ozark Highlands


865


Habitat Map

Habitats Weight


Problems Faced














866


Comments

Collembola. The Arkansas specimens that have been called this species are currently being redescribed as a new species (pers comm., Mike E. Slay).



867


State Rank:

Gobal Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Gastropoda

Neotaenioglossa

Hydrobiidae


Somatogyrus amnicoloides

Ouachita Pebblesnail

Priority Score:

SX — Presumed extinct

GX — Presumed extinct

80



out of 100

Somatogyrus amnicoloidesOuachita Pebblesnail

868



Problems Faced





More data is needed to determine conservation actions.

Data GapMedium



Comments

An endemic freshwater snail known only from the Ouachita River at Arkadelphia in Clark County.Walker, B. 1915. Apical characters in Somatogyrus with descriptions of three new species. The Nautilus 29(4):37-41.


Somatogyrus amnicoloidesOuachita Pebblesnail

869


State Rank:

Gobal Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Gastropoda

Neotaenioglossa

Hydrobiidae


Somatogyrus crassilabris

Thicklipped Pebblesnail

Priority Score:



80



out of 100

Somatogyrus crassilabrisThicklipped Pebblesnail

870



Ecobasins


Problems Faced

Threat: Hydrological alterationSource: Dam





Data GapMedium



Comments

This freshwater snail species is also known as the Thick-lip Pebblesnail. It is known only from the North Fork of the White River in Baxter County, Arkansas (Robison and Allen 1995). Presumed extinct from the North Fork of the White River, Norfolk, Arkansas (Burch and Tottenham 1980).


Somatogyrus crassilabrisThicklipped Pebblesnail

871


State Rank:

Gobal Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Gastropoda

Neotaenioglossa

Hydrobiidae


Somatogyrus wheeleri

Channelled Pebblesnail

Priority Score:



80



out of 100

Somatogyrus wheeleriChannelled Pebblesnail

872



Ecobasins

South Central Plains - Ouachita River

Problems Faced

Threat: Hydrological alterationSource: Dam





Data GapMedium


Comments

This freshwater snail species is extirpated in the subnation. Habitat probably destroyed by reservoirs. Known only from the Ouachita River in Clark County, AR (Robison and Allen 1995, Turgeon and others 1998).


Somatogyrus wheeleriChannelled Pebblesnail

873


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Gastropoda

Stylommatophora

Polygyridae


Stenotrema pilsbryiRich Mountain Slitmouth

Priority Score:



46



out of 100

Ozark Highlands


874


Habitat Map

Habitats Weight

Ozark-Ouachita Cliff and Talus Obligate

Problems Faced

Road construction maintenance. Threat: Habitat destruction or conversionSource: Road construction





Data GapMedium




875


Comments

Terrestrial snail. It is known from numerous locations associated with rock glaciers usually above the 1600 ft. contour, and usually under hardwood forest cover, on Rich and Black Fork Mountains in AR and OK, and on Winding Stair Mountain, OK. There are no major threats to any of the populations. However, there are some activities that could conceivably impact snail habitat, including mowing, paving and repaving of the Talimena Scenic Drive, maintenance of vistas involving periodic localized vegetation management, and maintenance of hiking trails, electronic transmission sites, and one power line right-of way. Population trends are assumed to be steady (ANHI 2003, Robison and Allen 1995).



876


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Gastropoda

Stylommatophora

Polygyridae


Stenotrema unciferumOuachita Slitmouth

Priority Score:



34



out of 100

Ozark Highlands


877


Habitat Map

Habitats Weight

Ozark-Ouachita Mesic Hardwood Forest Obligate

Problems Faced

Habitat disturbance that limits access to dead wood and creates xeric conditions.






Data GapMedium



Comments

Terrestrial snail. Found to occur on moist slopes in rotting timbers, but most particularly under small talus (Brian Coles, pers. Comm.).



878


State Rank:

Gobal Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Amphipoda

Crangonyctidae


Stygobromus elatus

Elevated Spring Amphipod

Priority Score:



65



out of 100

Stygobromus elatusElevated Spring Amphipod

879



Ecobasins

Arkansas Valley - Arkansas River

Habitats Weight


Natural Seep: Headwater - Small Obligate


Problems Faced

Threat: Habitat destruction or conversionSource: Recreation






Data GapMedium



Comments

An Arkansas endemic amphipod, this species has only been collected from a seep on Magazine Mountain in Logan County (Holsinger 1967).


Stygobromus elatusElevated Spring Amphipod

880


State Rank:

Gobal Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Amphipoda

Crangonyctidae


Stygobromus montanus

Mountain Cave Amphipod

Priority Score:



65



out of 100

Stygobromus montanusMountain Cave Amphipod

881



Ecobasins

Ouachita Mountains - Arkansas River

Habitats Weight


Natural Seep: Headwater - Small Optimal

Problems Faced







Protect seeps and seep recharge zones. Habitat ProtectionMedium



Comments

This Arkansas endemic amphipod has only been collected from a unidentified spring on Rich Mountain (Holsinger 1967).


Stygobromus montanusMountain Cave Amphipod

882


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Malacostraca

Amphipoda

Crangonyctidae


Stygobromus ozarkensisOzark Cave Amphipod

Priority Score:



23



out of 100


883




Ecobasins








884


Aquatic Habitats





Problems Faced






Survey and model for additional occurrences.


Protect caves and cave recharge zones. Habitat ProtectionMedium


Monitor known occurrences in cave surveys.

Comments

This crustacean species is limited to groundwater habitats and occurs in fewer than 15 caves in Arkansas (personal communication, Mike E. Slay).



885


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Arachnida

Pseudoscorpiones

Neobisiidae


Tartarocreagris ozarkensisPseudoscorpion

Priority Score:



23



out of 100

Ozark Highlands


886


Habitat Map

Habitats Weight

Ozark-Ouachita Dry-Mesic Oak Forest Suitable

Ozark-Ouachita Mesic Hardwood Forest Suitable

Problems Faced

Timber harvesting that decreases available dead wood and leads to more xeric forest conditions.





Limit timber harvesting in areas where this species is known to occur.




Comments

An Arkansas endemic pseudoscorpion that has been collected only from Washington County (Hoff 1945).



887


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Diplopoda

Chordeumatida

Trichopetalidae


Trigenotyla parcaCave Obligate Millipede

Priority Score:



65



out of 100

Ozark Highlands


888


Habitat Map

Habitats Weight


Problems Faced


Threat: Habitat destructionSource: Urban development

Groundwater contamination. Threat: Toxins/contaminantsSource: Non-point source pollution











889


Comments

No information available.



890


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Class:

Order:

Family:

Gastropoda

Stylommatophora

Polygyridae


Xolotrema occidentaleArkansas Wedge

Priority Score:



65



out of 100

Ozark Highlands


891


Habitat Map





Data GapMedium



Comments

Terrestrial snail. (Turgeon and others 1998)



892


State Rank:

Global Rank:

Boston Mountains

Arkansas Valley

Ouachita Mountains




Ozark Highlands

Class:

Order:

Family:

Insecta

Plecoptera

Leuctridae


Zealeuctra wachitaOuachita Needlefly

Priority Score:



50



out of 100


893




Ecobasins

Ouachita Mountains - Red River

Problems Faced

Threat: SedimentationSource: Resource extraction





894




Data GapMedium



Comments

Only known from Polk Co. and Scott Co., Arkansas from fewer than five occurrences. Inhabits intermittent streams (Ricker and Ross 1969).



895

abacion wilhelminae millipede - wildlifearkansas.com invertebrates.pdf · apochthonius titanicus...

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