Species Chidaea dayi Emeljanov, 2000

Museums

Regional Maps

• Chidaea dayi 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 [14].

  Type data:

   Holotype ANIC ♂ (coll.: 25.ix.1979, V. Zaitzev), Black Mountain, Canberra, Australian Capital Territory.

  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 [253].

 

Introduction

A reasonably large species of cixiid based on a series of specimens collected on Black Mountain in Canberra, Australian Capital Territory. Löcker and Holzinger (2019) extended the known distribution into the high country of the Australian Alps and Tasmania. The name honours Dr Max Day AO, former CSIRO Forestry Division Chief and Auchenorrhyncha taxonomist of the Australian National Insect Collection.

 

Distribution

States

Australian Capital Territory, New South Wales, Tasmania, Victoria

Extra Distribution Information

Australian Endemic.

IBRA and IMCRA regions

IBRA

ACT, NSW, Tas, Vic: Australian Alps (AA), South Eastern Highlands (SEH), Tasmanian Southern Ranges (TSR)

Ecological Descriptors

Adult: phloem feeder.

Extra Ecological Information

Nymph might be phloem feeder or fungivore.

 

Diagnosis

Body reddish fuscous, with mostly diffuse infuscations to yellowish fuscous and lighter areas to pale fuscous. Coryphe and metope dark fuscous, with paler reddish fuscous carinae; lightening of carinae smoothly passing into infuscate intervals between them. Clypeus nearly black. Gena dark fuscous to black, lorum dark fuscous. Pronotum dorsally pale fuscous but in places where carinae widely diverge (on disc and lateral parts of paradiscal areas) with infuscations betwen them. Paranotes of pronotum fuscous, ventrally yellowish fuscous. Scutellum reddish fuscous, carinae of the same color. Fore wing semi-hyaline, with fuscous veins. Anterior (outer) part of sigmal cell infuscate. Cross veins on membrane widely and diffusely infuscate. Thorax ventrally fuscous to dark fuscous, sides of mesothorax intensely dark fuscous.Fore coxa fuscous, middle coxa dark fuscous, other parts of fore and middle legs fuscous. Hind femur fuscous, tibia and tarsus pale fuscous. Are you getting a fuscous theme here? Abdomen dark fuscous, with pale margins of sclerites. Male pygofer almost entirely pale fuscous, female pygofer pale fuscous, ovipositor dark fuscous. Length: ♂ 6.1–6.5 mm, ♀ 7.6–7.7 mm. (Emeljanov 2000)

Colour. Vertex mid or dark brown (rarely light brown) with paler carinae. Frons mid to dark brown with paler carina (lateral carinae palest near frontoclypeal suture). Post- and anteclypeus darker than frons with slightly paler carinae. Pronotum light brown, sometimes with darker patches. Mesonotum midbrown (rarely dark brown) with concolorous or slightly paler carinae. Forewings light brown, tubercles and veins light or mid brown, concolorous with cells. Pterostigma, crossveins and apical parts of veins often slightly darker. Body and legs mid brown, rarely light brown. Morphology. Body length: ♂ 4.9–6.7 mm; ♀ 6.1–7.4 mm. Head: Vertex 2.0–2.7 x wider than long; median carina of vertex covering ¼–¾ of basal compartment of vertex; absent in apical compartment. Frons 1.0–1.2 x longer than wide; position of maximum width distinctly dorsad of centre of frontoclypeal suture; lateral carinae of frons in facial view convex, rectilinear apically or convex, evenly rounded. Frontoclypeal suture strongly semicircular, bent upwards, median part just or just not reaching lower margin of antennal scape. Postclypeus with median carina well developed, but sometimes evanescent near frontoclypeal suture. Anteclypeus with median carina moderately developed, evanescent or absent. Rostrum reaching hind coxae. Thorax: Hind margin of pronotum obtusely angled or rectangular. Mesonotum with median carina evanescent or moderately developed and lateral carinae weakly developed to evanescent. Forewing 3.1–3.4 x longer than wide; concavity at costal border absent; costal margin with 17–25 tubercles; fork of ScP+RA and RP slightly basad, slightly distad or at same level as fork CuA1 and CuA2; tubercles of forewing dark or pale, concolorous with veins; ScP+RA apically bifid or unforked; RP trifid; additional subapical cell between branches of MP1 and MP2 absent or present; MP1+2 and MP3+4 bifid (rarely trifid); 9–11 apical cells; 6 (rarely 7) subapical cells. Hind leg: tibia with 6 (rarely 5) apical spines; 1st tarsomere with 7–9 apical teeth and no (rarely 1) platellae; 2nd tarsomere with 9–11 apical teeth and 7–9 platellae. Male genitalia: Phallotheca narrow; dorsally with a short, moderately bent spine (a) with its curvature best seen in left lateral view; spine (a) only partly visible in ventral view; phallotheca ventrally with a very long, prominent spine (b) with a large triangular base, tip of spine (b) directed left laterad; phallotheca near base with a bifurcate ventral process. Aedeagal spines not reaching bifurcate ventral process (Löcker and Holzinger 2019)

 

ID Keys

Löcker and Holzinger 2019: 407–408

 

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 [419]

 

History of changes

Published	As part of group	Action Date	Action Type	Compiler(s)
05-Feb-2020	CIXIIDAE Spinola, 1839	22-Dec-2019	MODIFIED	Dr Murray Fletcher
13-Oct-2010		13-Oct-2010	MODIFIED
		12-Feb-2010	(import)