Genus Chiasmus Mulsant & Rey, 1855

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Regional Maps

• Chiasmus Mulsant, M.E. & Rey, C. 1855. Description de quelques Hémiptères-Homoptères nouveaux ou peu connus. Annales de la Société Linnéenne de Lyon 2(2): 197-249 [215].

  Type species:

   Chiasmus translucidus Mulsant & Rey, 1855 by monotypy.
• Atractotypus Fieber, F.X. 1866. Neue Gattungen und Arten in Homopteren (Cicadina Bur.). Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 16: 497-516 [501].

  Type species:

   Atractotypus bifasciatus Fieber, 1866 by monotypy.
• Kosmiopelex Kirkaldy, G.W. 1906. Leafhoppers and their natural enemies. Bulletin of the Hawaiian Sugar Planters' Association Experimental Station Entomological Series 1(9): 271-479 [334].

  Type species:

   Kosmiopelex varicolor Kirkaldy, 1906 by monotypy.
• Kartwa Distant, W.L. 1908. Rhynchota. — Vol. IV. Homoptera and Appendix. The Fauna of British India including Ceylon and Burma 4: 1-501 [394].

  Type species:

   Kartwa mustelina Distant, 1908 by original designation.
• Postumus Distant, W.L. 1918. Rhynchota. Homoptera: Appendix. Heteroptera: Addenda. The Fauna of British India including Ceylon and Burma 7(i-viii): 1-210 [84].

  Type species:

   Postumus facialis Distant, 1918 by original designation.
• Duraturopsis Melichar, L. 1908. Noverody a druhy Homopter z vychodni Afriky. Casopis Ceskoslovenské Spolecnosti Entomologické 5: 1–15 [13] [note: this generic name differs from Doraturopsis Lindberg, which is a valid genus of Chiasmini].

  Type species:

   Duraturopsis katonae Melichar, 1908 by monotypy.

 

Taxonomic Decision for Synonymy

• Signoret, V.A. 1877. [Remarques sur divers Hémiptères]. Bulletin de la Société Entomologique de France 5(7): 15-18 [16] (synonymy of Atractotypus Fieber)
• Singh Pruthi, H. 1930. Studies on Indian Jassidae (Homoptera). Part I. Introductory and description of some new genera and species. Memoirs of the Indian Museum 11(1): 1-68 [25] (synonymy of Kartwa Distant)
• Evans, J.W. 1974. New Caledonian leafhoppers and the systematic position of Kosmiopelix Kirkaldy and Euacanthella Evans (Homoptera: Cicadellidae). Pacific Insects 16(2-3): 165-175 [172] (synonymy of Kosmiopelex Kirkaldy, Postumus Distant)
• Zahniser, J.N. 2012. New generic synonymies and combinations in Chiasmini (Cicadellidae: Deltocephalinae). International Journal of Tropical Insect Science 32(3): 173–176 [175] (synonymy of Duraturopsis)

 

Introduction

A genus found from southern Africa through the Oriental and southern Palaearctic regions to Australia where a single highly variable species is widespread.

 

Distribution

States

New South Wales, Northern Territory, Queensland, South Australia, Tasmania, Victoria, Western Australia

Extra Distribution Information

Africa.

IBRA and IMCRA regions

IBRA

NSW, NT, Qld, SA, Tas, Vic, WA: Brigalow Belt North (BBN), Brigalow Belt South (BBS), Carnarvon (CAR), Cobar Peneplain (CP), Cape York Peninsula (CYP), Darwin Coastal (DAC), Darling Riverine Plains (DRP), Einasleigh Uplands (EIU), Flinders Lofty Block (FLB), Gawler (GAW), Gulf Plains (GUP), Murray Darling Depression (MDD), Nandewar (NAN), NSW North Coast (NNC), NSW South Western Slopes (NSS), Sydney Basin (SB), South Eastern Queensland (SEQ), Stony Plains (STP), Tiwi Cobourg (TIW), Tasmanian South East (TSE), Victoria Bonaparte (VB), Wet Tropics (WT)

Diagnosis

Corps oblong. Tête triangulaire, atténuée à son bord antérieur. Vertex subdéprimé; caréné à sa base. Front oblong, subparallèle. La partie inférieure de la tête située entre les yeux et la base du front, en quadrilatère pas plus long que large. Joues latéralement dilatées. Plaques génales subelliptiques. Chaperon en carré long. Rostre court; assez robuste; de deux articles apparents. Yeux grands; transversaux; peu saillants. Ocelles globuleux; distants; placés en avant de la ligne des yeux, vers le bord de la tranche latérale du vertex. Antennes médiocres , avec leur soie assez longue, graduellement épaissie à la base. Prothorax court; transversal. Homélytres allongées; à cinq nervures saillantes; à bord sutural sensiblement sinueux en arrière, où elles se croisent assez fortement. Pieds allongés, les postérieurs surtout. Tibias antérieurs faiblement épineux; les postérieurs beaucoup plus fortement. Tarses de trois articles: les quatre antérieurs à dernier article aussi long que les deux précédents pris ensemble: les postérieurs à premier article aussi long que les deux suivants réunis (Mulsant & Rey 1855).

Head triangular, more or less porrect. specifically variable in this respect; foliaceous. Crown flattish. longer than wide between the eyes, from three to four times as long as pronotum. Lateral margins in front of eyes slightly sinuate, apical fourth subspatulate. Frons oblongoval, twice as long as wide; genae at antennal sockets about three-fourths of the width of the clypeus which is parallel-sided, a little wider than lorae, the latter not quite touching posterior margin of genae. Eyes large, forming part of the curve of the head, not enclosed by lateral margin of crown. Ocelli on the disk of the crown just above anterior margin of the eyes, a little nearer lateral margins than the middle line. Pronotum transverse, about three times as wide as long, slightlv arched anteriorly, very obtuseangularly emarginate posteriorly; lateral margins short. Tegmina coriaceous, abbreviated, reaching little beyond base of abdomen, posteriorly truncate, venation obscure; wings minute, venation obscure, submarginal vein absent. Legs normal (Kirkaldy 1906, of Kosmiopelex).

 

Diagnosis References

Kirkaldy, G.W. 1906. Leafhoppers and their natural enemies. Bulletin of the Hawaiian Sugar Planters' Association Experimental Station Entomological Series 1(9): 271-479 [334–335]

Mulsant, M.E. & Rey, C. 1855. Description de quelques Hémiptères-Homoptères nouveaux ou peu connus. Annales de la Société Linnéenne de Lyon 2(2): 197-249 [215–216]

 

History of changes

Published	As part of group	Action Date	Action Type	Compiler(s)
05-Dec-2019		13-Oct-2015	MODIFIED
05-Dec-2019		30-Nov-2012	MODIFIED
05-Dec-2019		16-May-2012	MODIFIED
05-Dec-2019		05-Aug-2011	MODIFIED
		12-Feb-2010	(import)