Species Acrodelphax thimbron Fennah, 1965

Museums

Regional Maps

• Acrodelphax thimbron Fennah, R.G. 1965. Delphacidae from Australia and New Zealand (Homoptera: Fulgoroidea). Bulletin of the British Museum (Natural History) Entomology 17(1): 1-59 [39].

  Type data:

   Holotype QM ♂ (coll.: 22.xii.1954, T.E. Woodward), Barrington Tops, New South Wales.

Introduction

The holotype, from Barrington Tops, in the New South Wales North Coast bioregion (NNC), is the only known specimen of this species.

Distribution

States

New South Wales

IBRA and IMCRA regions

IBRA

NSW: NSW North Coast (NNC)

Ecological Descriptors

All stages: phloem feeder.

Diagnosis

Stramineous; intercarinal areas of frons, anterior compartment of genae, mesonotum posteriorly, pleurites and coxae, abdominal terga laterally and sternites except at margins, pygofer laterally and on diaphragm, fuscous. Tegmina yellowish hyaline, costa and clavus at base, and a suffusion in apical third and anal angle beyond apex of clavus, castaneous. Vertex longer submedially than broad at base (nearly 1.4 : 1), subrectangularly rounding into frons, very slightly narrower at apex than at base, lateral margins almost straight, apical margin truncate with submedian carinae prominent, Y-shaped carina feeble, submedian carinae uniting at apex of vertex, basal compartment of vertex wider at hind margin than greatest length (1.3 : 1) and than median length (about 1.4 : 1); frons in middle line longer than wide at widest part (1.7 : 1), widest near middle, lateral margins distinctly arcuate, median carinae simple, coarse; clypeus at base not wider than frons at apex, post-clypeal disc as broad at base as long in middle line, in profile moderately convex, its median carina not as prominent as that of frons; anteclypeus in profile rather strongly curved caudad, so that entire clypeus in profile is rather strongly convex, rostrum with subapical segment surpassing mesotrochanters, apical segment reaching post-trochanters; antennae reaching to level of middle of clypeus, basal segment longer than brown (1.5 : 1), second segment longer than first (nearly 1.7 : 1), ocelli minute; pronotum with disc longer in middle line than broad at anterior margin (1.4 : 1), lateral carinae straight, not strongly diverging, almost attaining hind margin; post-tibial spur with 13 teeth. Anal segment of ♂ short, ring-like, lateroapical angles distinctly separated, margin between them membranous, each produced ventrad in a long slender spinose process which appears as if annulate. Pygofer moderately long, posterior opening longer than broad, dorsolateral angles distinctly produced, inflected mesad, rectangulate; diaphragm strongly impressed, dorsal margin rectangulately excavate, medially with a vertical ridge, lateral margins oblique, no medioventral process present. Aedeagus short, laterally compressed, moderately expanding distad, bluntly rounded apically with two tracts of teeth subapically on left side, one tract in dorsal half, with three rows of teeth, the other in ventral half, with four rows of teeth; orifice apical. Genital styles rather long, narrow, sinuately taperiong to near apex, abruptly expanded with inner and outer apical angles subacutely and about equally produced mesad and laterad, respectively. ♂: length (brachypterous) 2.4 mm. (Fennah 1965)

Diagnosis References

Fennah, R.G. 1965. Delphacidae from Australia and New Zealand (Homoptera: Fulgoroidea). Bulletin of the British Museum (Natural History) Entomology 17(1): 1-59 [39–41]

History of changes