Genus Chidaea Emeljanov, 2000

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• Chidaea Emeljanov, A.F. 2000. New genera of the family Cixiidae (Homoptera, Fulgoroidea) from Australia and neighbouring Territories. Entomologicheskoe Obozrenie (English translation as Entomological Reviews) 79(1): 12-34 [13].

  Type species:

   Chidaea dayi Emeljanov, 2000 by original designation.

  Secondary source:

   Emeljanov, A.F. 2000. New genera of the Family Cixiidae (Homoptera, Fulgoroidea) from Australia and neighboring Territories. [translation]. Entomological Review (English translation of Entomologicheskoe Obozrenie) 80(3): 251-270 [252].

 

Introduction

The genus Chidaea was originally based on a small series of Chidaea dayi Emeljanov, collected on Black Mountain in Canberra, Australian Capital Territory. The genus was comprehensively revised by Löcker and Holzinger (2019) who added 13 new species and transferred Cixius sidnicus (Stål) into the genus as well. The genus has a single species (C. etelis Löcker and Holzinger) in SW Western Australia and the other species are distributed widely across southern Australia and extend along the eastern seaboard as far as the Wet Tropics of North Queensland.

 

Distribution

States

Australian Capital Territory, New South Wales, Queensland, South Australia, Tasmania, Victoria, Western Australia

Extra Distribution Information

Australian Endemic.

IBRA and IMCRA regions

IBRA

ACT, NSW, Qld, SA, Tas, Vic, WA: Australian Alps (AA), Brigalow Belt South (BBS), Central Mackay Coast (CMC), Coolgardie (COO), Darling Riverine Plains (DRP), Eyre Yorke Block (EYB), Flinders Lofty Block (FLB), Geraldton Sandplains (GS), Jarrah Forest (JF), Mallee (MAL), Murray Darling Depression (MDD), New England Tablelands (NET), NSW North Coast (NNC), Riverina (RIV), Sydney Basin (SB), South East Corner (SEC), South Eastern Highlands (SEH), South Eastern Queensland (SEQ), Swan Coastal Plain (SWA), Tasmanian South East (TSE), Tasmanian Southern Ranges (TSR), Tasmanian West (TWE), Victorian Midlands (VM), Wet Tropics (WT)

Diagnosis

In the shape of the head, Chidaea is similar to the genus Macrocixius Mats., but in the latter, median ocellus is present, posterior RA branch is not forked, and clypeus shallowly protudes into metope. Chidaea differs from the genus Achaemenes Stål (possessing toothless hind legs) in the subequal length of acrometope and coryphe (in Achaemenes, coryphe is twice as long as metope), and also in the simpler metope, clypeus protruding into the metope as a regular parabola and wings held tectiform in repose. (Emeljanov 2000)

Chidaea can be distinguished from all other genera of Australian Cixiidae by a combination of the following characters: Pronotum lacking ovoid inflated areas; apex of head with two transverse carinae (apical transverse carina and subapical carina); median carina of frons unforked; forewing with subcostal and radial vein (and for a very short section even medial vein) united near basal cell to form a distinct stem; second hind tarsomere with two platellae less than number of apical spines; frons without a median ocellus, postclypeus convex but not distinctly swollen and prominent; male anal tube with ventral lobe in lateral view narrow near base, widening towards apex (Löcker and Holzinger 2019).

 

ID Keys

Löcker and Holzinger 2019: 404

 

Diagnosis References

Emeljanov, A.F. 2000. New genera of the Family Cixiidae (Homoptera, Fulgoroidea) from Australia and neighboring Territories. [translation]. Entomological Review (English translation of Entomologicheskoe Obozrenie) 80(3): 251-270 [253]

Löcker, B. and Holzinger, W.E. 2019. Revision of the Australian planthopper genus Chidaea Emeljanov with a redescription of Cixius sidnicus Stål, 1859 (Hemiptera: Auchenorrhyncha: Fulgoromorpha: Cixiidae). Zootaxa 4691(5): 401–443 [404]

 

History of changes

Published	As part of group	Action Date	Action Type	Compiler(s)
05-Feb-2020	CIXIIDAE Spinola, 1839	31-Dec-2019	MODIFIED	Dr Murray Fletcher
13-Oct-2010		13-Oct-2010	MODIFIED
		12-Feb-2010	(import)