Australian Biological Resources Study

Australian Faunal Directory

<i>Chidaea crassa</i> Löcker and Holzinger. A: <i>habitus</i>, B-D: head.

Chidaea crassa Löcker and Holzinger. A: habitus, B-D: head.

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Species Chidaea crassa Löcker and Holzinger, 2019


Compiler and date details

22 December 2019 - Murray J. Fletcher

 

Introduction

This species is widespread in east coastal Australia from the Wet Tropics of North Queensland to the South East Highlands of New South Wales. It is the only species recorded in Queensland which bears dark tubercles along the tegminal veins.

 

Distribution

States

New South Wales, Queensland


Extra Distribution Information

Australian Endemic.


IBRA and IMCRA regions (map not available)

IBRA

NSW, Qld: NSW North Coast (NNC), Sydney Basin (SB), South Eastern Highlands (SEH), South Eastern Queensland (SEQ), Wet Tropics (WT)

Ecological Descriptors

Adult: phloem feeder.

 

Diagnosis

Colour. Vertex light, mid or dark brown with paler carinae. Frons mid to dark brown with paler carina (lateral carinae palest near frontoclypeal suture). Post- and anteclypeus same colour or slightly darker than frons with pale carinae. Pronotum light brown, sometimes with darker patches. Mesonotum mid to dark brown with concolorous or slightly paler carinae; central area of mesonotum (in between carinae) often lighter coloured. Forewings light brown or whitish, veins light brown or whitish, concolorous with cells, tubercles dark, in distinct contrast with lighter coloured veins. Pterostigma, crossveins and apical parts of veins often slightly darker. Body and legs light brown, (sometimes mid brown or dark brown). Morphology. Body length: ♂ 5.8–6.6 mm; ♀ 6.3–8.2 mm. Head: Vertex 2.1–2.3 x wider than long; median carina covering 1/3 to full length of basal compartment of vertex; absent in apical compartment. Frons 1.0–1.1 x as long as wide; position of maximum width more or less around centre of rontoclypeal suture or slightly dorsad; lateral carinae of frons in facial view convex, rectilinear apically or convex, evenly rounded or sinuate, s-shaped. Frontoclypeal suture strongly semicircular, bent upwards, median part reaching at least lower margin of antennal scape. Postclypeus with median carina moderately or well developed. Anteclypeus with moderately developed, evanescent or absent median carina. Rostrum surpassing hind coxae. Thorax: Hind margin of pronotum acutely angled. Mesonotum with median carina moderately developed, evanescent near posterior end; lateral carinae moderately developed. Forewing 3.1–3.3 x longer than wide; concavity at costal border absent; costal margin with 10–19 tubercles; fork of ScP+RA and RP slightly basad or slightly distad of fork CuA1 and CuA2; tubercles of forewing dark, distinctly contrasted to paler coloured veins; ScP+RA apically bifid; RP trifid; additional subapical cell between branches of MP1 and MP2 absent; MP1+2 trifid; MP3+4 trifid (rarely 4 branches); 12 (rarely 13) apical cells; 6 subapical cells. Hind leg: tibia with 6 (rarely 5) apical spines; 1st tarsomere with 11–13 apical teeth and 5–9 platellae; 2nd tarsomere with 9–11 (rarely 12) apical teeth and 7–10 platellae. Male genitalia: Phallotheca very wide (widest around midline) with a bifurcate ventral process that are attached to the phallotheca with a minute or without a stalk in ventral view; phallotheca on each side with a very long, in ventral view almost straight (in lateral view slightly curved) spine (a,b) reaching down aedeagus shaft as far as tip of the bifurcate ventral process or surpassing it (Löcker and Holzinger 2019).

 

ID Keys

Löcker and Holzinger 2019: 407–408

 

History of changes

Note that this list may be incomplete for dates prior to September 2013.
Published As part of group Action Date Action Type Compiler(s)
CIXIIDAE Spinola, 1839 13-Dec-2019 ADDED Dr Murray Fletcher