11. The Characters of Otiocerus and Anotia, two new Gertera of Hemipterous Insects belonging to the Farnib of Cicadiada? : mith a Description of several Species. By the Rev. William Kirby, M . A . F. R.S. and L.S.

Read March 2, 1819.

THE extensive fiimily of Cicadiade, consisting of the two Lin- nean Hemipterous genera of FuZgora and Cicada, although my learned friend M. Latreille has done much towards reducing it to order, is by no means in a state of arrangement so perfect as to preclude further improvement. Considering the great beauty of some species, the almost incredibly singular and g o - tesque form of others *, and the celebrity which, from the easllicst ages, has been attached to a third tribe of them?, it is wonder- ful that this family has not been more attentively studied, and its genera more accurately distinguished and defined.

The characters afforded by these animals for such distinction are numerous and striking. Not to mention the promuscis$ ; the situation, length, and composition of the antennae ; the presence or absence of the stemmata or ocelli, and their number and posi- tion ; the shape and place of the eyes ; the gene ; the front : E I I C I dypeus, or rather nasus; the shape of the thorax; the figure, v r i n - ing, and substance of the elytra and wings ; and, to name no more, the anal apparatus of the sexes, furnish a variety of enccl-

* See Stoll's Cigales, Plate XXI. fig. 115 ; and XXVlII. fig. 163, 164, tt@. + The TETTLE of the Greeks, and Cicada of the Latins. $ By this name the rostrum of Hemiptera will be distinguished in the Iiilrcx!uc~tiou

to Entomology of Kirby and Spenee, lent

Rev. w. KIRBY‘S Characters of Otiocerus m d Anotia. 33

lent diagnostic marks by which the natural genera may be readily ascertained. Amongst the insects of this family, which I pur- chased at the sale of the late Mr. Francillon’s Museum, I fbumd several that would not well arrange under any of M. Latreille’a present genera ; but I was particularly struck by a set collected in Georgia, and admirably displayed by that expert collector, accurate delineator and painter, and most intelligent observer of natural objects, Mr. Abbot. Upon examining these attentively, I found that they clearly formed two nondescript and very dist,inct genera belonging to the subfamily of Ftilgorella of the great en-. tomologist before alluded to.

I now beg leave to lay before the Linnean Society the charac- ters of these two genera, with a description of the species in my cabinet.

0 T I 0 C E It U S. C H A R A C T E R E S S E N T I A L I S .

Atatenria: suboculares, elongate, basi appendiculata.

C H A R A C T E R A R T I F I C I A L I S .

A ~ r f e n n ~ suboculares, elongate, exarticulata:, multiannulata:, apice setigerE, basi appendiculatae : appendiculis antenni- formibus, elongatis, tortuosis.

Oculi reniformes. Ocelli obsoleti aut nulli. Cupid compressurn, subtriangulare, supra et infra bicarinatuoi :

fronte subrostrata ; rostro sEiepius subascendenti.

C H A R A C T E R N A T U R A L I S .

CORPUS oblongum, immarginatum, parvum, agile : cute sub-

CA P U T magnum, valde compressum, subtriangulare %, supra

c t

cornea.

* TAB. I. fig. 1.

14 Rev. w’. I<IRBP’S Charactem of Otiocerus and Anotia.

et infra bicarinatum * : carinis approximatis, inferiori- bus przecipue, plus minus ascendentibus, superioribus interdum rectis. Pronzuscis inflexa, filiformis, biarti- culata : articulo extimo brevissimo, ad basin pedum posticorum attingens. Labrunz dimidiato-conicum a naso subdistinctum, promuscidis basin obtegens. Na- sust elevatus, compressus. Gene angust=, lineares, ad nasum adjacentes. Oculi $ laterales, postici, reni- formes. Stemmata, s. Ocelli, obsoleta vix cernenda. Antennces inter oculos et nasum, ex processu oblongo tympaniformi membrana obtecta 11, prodeuntes, fili- formes aut subclavatze, elongat=, subflexuose, exarti- culatz, multiannulatae : apice umbilicato setigero ; seta tenuissima, basi appendiculata : appendiculis unica vel duabus, antennarum fere longitudine et forma, multi- annulatis, tortussis, apice muticis.

Thorax brevissimus, postice bifi- dus : lobis** divergentibus, utrinque deflexus : lateri- bus dilatatis rotundatis. Scutellum cum dorsolo W, a quo vix distinctum, subrhomboidale. Postscutellurn t.F triangulare. Lumbale ff utrinque spiraculo pertusum. Fedes longitudinaliter angulati : posticis saltatoriis. Cox& quatuor anteriores elongat.de, lineares : posticis brevioribus, magnis, incrassatis. Troclianteres anteri- ores parvi dimidiato-ovati femorum basi subtus ad- nexi : posticis duobus magnis femorum basin exci- pientibus. Femora filiformia. Tibice filiformes, apice calcaratae : calcaribus minutissimis. Tarsi triarticu-

TRU NCUS subglobosus.

+ Ibid. fig. 1 . b. Ibid. fig. 1. c.

** lbid. fig.3. The reader will find these terms explained

* TAB. I. fig. 2. aa, bb . 9 Ibid. fig. 1. d ; and fig. 8. b. 11 Ibid. fig. 1.f; and fig. 8. a.

Dorsolum, Postscutellurn, Lurnbale. in the 1 Ith volume of these l’ransaclions, part i. p. 105.

lati :

Rev. W. KIRBY'S Cliu?*actew of Otiocerus a i d Anotia. 1,j

lati : anterioribus quatuor articulo extimo brevissimo ; posticis articulo primo sequentibus longiori, secundo extimo breviori, omnibus spinulis semicoronatis, quod non in tarsis anterioribus obtinet. Tarsi omnes biun- guiculati : unguiculis simplicibus. E&tm cuneiformia, corpore duplo longiora, membranaceo-pergamenea*, neurosa? ; areolis plurimis ; basalibus linearibus, api- calibus parallelogrammicis. A IQ dimidiato-cordatze, pergameno-membranacete, elytris breviores et lati- ores.

ABDOMEN subtrigonurn : carina dorsali ; segmentis dorsa- libus sex, ventralibus quinque ultimo reliquis majori in medio lobato : -lob0 rotundato :t ; an0 , feniineo apparatu sextuplici : laminis duabus inferioribus sinu magno su- pra excisis 5, lateralibus oblongis 11, superioribus trian- gularibus basi intus rectangulis%& ; ano masculo supra stylo elongato lineari basi incrassato M, subtus forcipe e laminis duabus foliiformibus oblongis concavis sur- sum arcuatis intiis inferihs sinuatis $$ instructo.

This genus is related both to F2cZgos.a and Delphax ; from the former it borrows its rostrated front, and from the latter its reni- form eyes and elongate antennz. It is however distinguished by many peculiar characters, some of which are very singular. Of this description are its compressed head with a double edge both above and below, and its exarticulate multiannular an-

Ctennze, furnished at their base with one or two long tortuous * The termpergameneus, in The htroduction to Eiitomology, is used to signify a

.t. For the explanation of this term, see Introduction to &rtornolc@, Qd ed. ii. 947. 5. TAB. I. fig. 7. C. 8 Ibid. au. ** Ibid. fig. 6. a a .

substance between coriaceus and membranaceu, somewhat resembling parchment.

I ] Ibid. b b . ++ Ibid. fig. 4. a. $$ Ibid. b b ; and fig. 5. aa.

appen-

16 Hev. W. KIRBY'S Characters of Otiocerus and Anotia.

appendages or auricles. Circumstances to be met with in none cxf tlla present genera of this or the other tribes of the Cicadiah. The absence of the ocelli, which are very visible in Fuigora and Dei'phax, and the different composition of the anal apparatus of the sexes, furnish further striking distinctions that satisfactorily establish the claim of Otiocerus to stand per se as a genus.

I possess no less than eight species, all from Georgia, belong- i11g to this genus, which I shall now describe.

Degeerii. I . 0. rubescens, elytris virescente-punctatis : vmis roseis ; apice summo pollinoso-niveo.

? c z Long. corp. lin. 3% 3. Expans. alar. lin. 1% 84.

Corpus rubrum, supra dilutius. Caput longius rostraturri : cari- nis niveis ; superioribus undulatis immaculatis, inferioribus nigro transverse striatulis. Antennce in nostris specimini bus desunt. Elytra apice dilatata, albida : neuris roseis ; inter- stitiis punctis rotundis nigro-virescentibus irroratis. Elytri summus apex in medio ex pulvere niveus. Alee a l b s : vasis roseis. Pedes pallidi.

Mas femina minor : stylo ani inflexo, foliohs intus sinubus tri- bus.

Stolfii. 2. 0. rufescens, elytris alisque nigricantihus : vasia ro- seis, illis apice macula albida.

8 Long. corp. lin. 3. Expans. alar. lin. 84.

Corpus pallide rufum. Cuput magnum, pallidum. 44ntennd sen- sim paulo crassiores, capite breviores, fuscescentes, basi ap-

pendiculis

ecant ia : vasis rubescentibus, @pice mcula rotundata albi- da. Apicep versus margine anteriori elytra rosea sunt : punc- tjs sex nigripantibus. Pedes albidi.

&bhrotia'. 3. 0. mfescens, alis lacteis, eIytris pallidis nigro punc- tqtis.

8 & ? r . Long. corp. lin. 2.

Expans. dar. lin, 7. Cory& pi l ide rufum. C a p t carinis niveis. Antenace breves,

subclavatze, rufescentes, basi appendicula unica antenna 1011- giori. Elytrca luteo-alba, nigro sparse punctata, sed basis ipaa immadata est. A"& lactee, iricdores. Pedes pallidi.

Mas vb fbrnina minor, m t d s capitis fere longitudine : appen- diculis duabus antenna longioribus valde tortuosis.

Yar. @. Elytris magis luteis.

FranciZloni. 4. 0. pallidus, dis taeteis, elytris nigro punctatis et fasciatis, abdoaah Mtrinque punctis ni-

h n g . corp. lin. 38. Expans. alar. fin. 8%.

Sindimus praecedenti, sed major : corpore pallido, null0 modo d s c e n t e ; capite nigm nebdoso : carinis inferioribus nigro punctatis, antennis nigricantibas : appendicula alba : Elytris totis nigro punctatis, nec basi immaculatis : fascia insuper obliqua, indistincta, interrupta, ex punctis et maculis nigrix conflata, maculis item tribus nigricantibus in margine postico.

pFqm basinin@ pncto nigrkanti notat=. &domen s q - me&s w&ad4bw utrinque pmb aigro.

VQL. ff.E'I. D Coque-

18 12av. W. KIRBY'S C'haractet-s of Otiocerus and Anotia.

Coquebertii. 5. 0. pallidus, elytris vitta apice furcata, puncto- que sanguineis.

TAB. I. FIG. 14. ?

Long. corp. lin. 3. Expans. alar. lin. 82.

Corpus pallidum. Cupzrt utrinque vitta lata sanguinea. An- tenna breves, clavatie, cum appendicula antenna paulo lon- giori, rufescentes. Elytm pallida : vitta ante apicern fur- cata ; furca magna, lineolaque intermedi'a, pallide sanguineis - Ala lacteae,

Reaumurii. 6. 0. rufescente-pallidus, elytris vitta abbreviata apice dilatata punctisque quinque nigrican- tibus.

c Long. corp. lin. 2i. Expans. alar. lin. 7.

Corpus pallidum rufo dilutius tincturn. Caput carinis superiori- , bus rectis niveis. Oculi subaurati. Antennce in nostro spe- cimine desunt. Elytra vitta lata subarcuata apice dilatata, punctisque insuper quinque, tribus in ipsa vitta, nigricanti- bus. Neura rufescentes. A h sublacteae, iricolores.

,YchekZeoabergii. 7. 0. pallidus, capite sanguineo, elytris alisque vasis roseis.

9 Long. corp. lin. 2. Expans. alar. lin. 74.

Corpus pallidum. Cuput oblongum, sanguineurn : rostro obtw siori vix ascendenti ; carinis superioribus approximatis niveis,

iaferioribus

Rev. W. KIRBY'S Characters of Otiocerus wnd Anotia. 19

inferioribus fere coalitis albis. sanguine=. cem, roseis.

Antenne cum appendicula ELytra lutescentia : neuris, costaque apud api- AZa lacteae : neuris roseis.

Wo& 8.- 0. pallidus, elytris luteolis i vitta fracta punctisque sparsis nigricantibus.

P d Long. corp. lin. 2i . 25. Expans. alar. lin. 89. 73.

Corpus pallidurn. Caput vitta obscuriuscula sanguinea lineola. nigra in rostri apice terminata : carinis superioribus rectis. Antenna clavatae, rufescentes : appendicula pallida antenna tenuiori longiori. Elytra luteola : vitta obscuriuscula in me- dio fracta, vel primum a basi ad marginem posticum et dein ad marginem anticum oblique ducta, punctisque quibusdani sparsis nigricantibus. A Ze lacteae.

Mas femina minor : antennis appendicula item mica sed lon- giori. Oculi subaurati.

. ,Two of the other males above described, vix. of 0. Stollii

.and Abbotii, have two appendages at the base of their anten- ,nae, but in 0. Wo@i they have only oue; so that the genus seems divisible into two sections, *A nfenais masculis appendi- .culis diiabus, ""Aatennis masculis appendicula uizica. I would not thus arrange ,the species here described, because I possess the males of only three ofithem, and in one of these '(0. De&ee&) the antennae and appendages arc broken off.

. .

D ' ? A NOTIA.

ANOTIA. C H A R A C T E R E S S E N T I A L I S .

Bmtenw subocularies, bihcu1atae : artkulo primo brevissimo, extimo elongato infra apimm setigero.

C H A R A C T E R A R T I F I C I A L I S .

A ntenne suboculares, biarticalak : articdo primo brevissimo,

Qculi prorninuli, semilunati. OceZZi obsdeti aut nulli. Caput compressum, subtriangulare, supra et infra bicarinatum :

extimo elongato paulo infra apicem setigero.

fronte subrostrata ; rostro recto.

Obo. Chdracter Naturalis &re ut ih genm prmecknti: sed &put rostro haud ascend'e&i : aarini6 superimibw thmcem versus divvrgentibus, inferiaribus approximtis -us versus convergentibus et demum coalitis. Pmwmis bwvissima vix basin pedum intermediorum attingens. Nusus capitis fere loiigitudine*. 06d prminentes, semilatiatit. d mteane a- pite longiores, biauticdatae : a&iculo primo btevissimo et vix Ulh $, secundo elongab, S U b h " i , eompresso, subannulato, sursum apice oblique truncdto et subemarginato, ex emargi- natura paulo infra apicem summum setigero§. Thorax lobis subfradb, apke su'bem~gbtkf'. El'ytm basi aintice dente promirmb reflexo, mW6sa : areoh ifitmrnedG8 (diffomibm, apicalibus triangdaribus. AZa dimidiato-elliptics.

This genus is intermediate between Otiocerus and DeEpha'r, but distinguished from both by peculiar characters. From the

* Tab. I. fig. 9. 6. 5 lbid. d. and fig. 10. ab.

4. Ibid. c. $ Ibid. e. Ibid. fig. 11.

former,

hmiier,’by wanting the appendages at .the of the aetamae ; Iby’tbe c-wqmative shortness of its p ~ ~ m s c i s ; by its very pm- nriamt sedunm eyes ; by the gneahr h g t h of ih nasus ; by the difference observable in the veining of its dytra; and the angular tooth at their anterior base :-and from the latter, by its compressed, bicarinate, subrostrated head ; by the comparative length of the joints of its antennae, the first joint in Delphac being very long” ; by the absence of @e raarkable spur which arms the posterior tibiae of the latter genus; by its differently- shaped and veined elytra ; by the absence .d&ek l i ; and by i t s a d appendages, which in Pelplhus come ,nearer to those .of Cb(d;d31 Latr.t I possess only a single individual of this genus, which is a female, with ap .anal apparatus -similar to &at of Oiio- cerus.

Btmtii. 1. A. TAB. I. F k G . 15.

Long. cmp. En. 14. Expam. dm. l h 5$.

Corpus pallidum. €apt& $.iangulm-: linea au&aca ab ocu- €is ad r M apieem duck. Ocd p&idi. Meme capite longiores. Elytra lutescentia : ~ ~ ~ d l k hydkiS ; neura ob- fitpa & dbC6 apki pm, rk@a.; mta qikernvemts san- guineo Cratnsme l k ~ e . B + s 0 puncta quatuor nipicantia notands. A k subhyafinaz : neufa disci transversa anteisori?iig+.

fn my specimen of this iasect the h d is ip the vertical posi- tion reprem@ ia the sketch:.; bd this 5s mast likely the di- xac&ipn the animal,gives it, when it prepilres to use its promuscis : +n at reat and unemployed, the be& probably assumes a ho- rizontal direction. . * Tab. I, bg. 1% B. Ibid. fig. 13. $ Jbid. Sg. 9-

These

22 Rev. W. KIRBY’S Characters of Otiocerus and Anotia.

These two genera, though they belong to the sub-fanily of FuZgorelZe Latr., distinguished by subocular antennE, require to be placed in a subdivision of it by themselves, on account of their want of ocelli

EXPLANATION OF ~MB. r. Details of Otiocerus.

Fig. 1. The Head. a. The Rostrum. b. The Nasus. c. The Eye. d. The Antenna. ee. The Appendages. f,The Process from which the Antenna and Appendages pro- ceed.

2. A lateral view of part of the Head to show the Carin=. aa. The upper Carinae.

3. Part of the Thor,ax, p.. One of the Lobes of Ditto. 4. Lateral view.of the Anus of the Male. a. The styliforrn

Process. 5. Under view ,of Ditto. aa. The foliiform Processes.

b. The Male Organ? 6. The upper side of the Anal Apparatus of the Female.

aa. The upper pair of Lamin=. bb. Part of the late- ral Ditto.

7 . The under side of the same Apparatus. aa. The lower pair of Laminae. bb. The lateral Ditto. c. The last ventral Segment of the Abdomen.

8. Part of the Headof another Species, the Antenna of which has only one Appendage. a. The Process from which the Antenntz, &c. proceed. b. The Antenna. c. The ,lppendage.

Details

bb. The lower Ditto.

b 6. The foliiform ‘Ditto.

Rev. W. KIRBY’S Chasucters cf Otiwerus and Anotia. 23

Details of Anotia.

Fig, 9. The Head. a. The Rostrum. b. The Nasus. c. The

10. Part of the Antenna. a . The emarginate Apex. b. The

11. Part of the Thorax.

Eye. d e . The Antenna.

Seta. a. One of the Lobes of Ditto.

Some Details of DeZphax Fabr. Fig. 12. The Antennae.

Ditto. c. The Seta. 13. Its Anus.

I b . Lateral Lamina, answering to b b in figs. 6 and 7. 14. Otiocerus Coquebertii. 15. Anotia Bonnetii.

a . The first Joint. b. The second

a. Ovipositor? answering to a-a in fig. 7.

111. OL-