Austrimonus biapicalis

Fletcher, Murray J. & Dai, Wu, 2018, A new genus Austrimonus for Eutettix melaleucae Kirkaldy (Hemiptera: Cicadellidae: Deltocephalinae: Opsiini) and nine new species, Zootaxa 4387 (2), pp. 310-330: 324-327

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Austrimonus biapicalis


Austrimonus biapicalis  sp nov. (Figs 19–20, 30)

Holotype, male, Kimberley Research Station , via Wyndham, NW Australia, 23.viii.1956, E.C.B. Langfield, ASCTHE009022 ( ANIC). 

Description. Head and thorax (Fig. 20) evenly pale testaceous throughout with two dark brown spots at apex of head, another beside eye on each side and two against hind margin of vertex. Tegmen (Fig. 19) pale whitish translucent with small infuscations on costal margin at vein endings.

Genitalia. Male: Subgenital plate ( Fig. 30BView FIGURE30) narrow triangular, tapering with apical finger-like process poorly defined. Paramere ( Fig. 30FView FIGURE30) with preapical lobe slightly rounded, apical process curved laterally with external angulation on medial side. Connective ( Fig. 30EView FIGURE30) elongate, with stem longer than arms. Aedeagus, in posterior view ( Fig. 30CView FIGURE30), with shafts straight, diverging, gonopore preapical with two apical elongate triangular processes, the outer curving around the inner; in lateral view ( Fig. 30DView FIGURE30), shafts curve anteriorly to gonopore, shaft continuing beyond gonopore as inwardly curved linear process, and process posterior to gonopore continuing as tapered elongate process curving anteriorly. Basal apodeme ( Fig. 30DView FIGURE30) thick, blunt, more or less parallel to shaft. Female: unknown.

Etymology. The species name reflects the two apical processes on each aedeagal shaft.

Comments. The pale colouring and the brown spots at the apex of the head are unusual but whether this is characteristic of all specimens of this species is dependent on examination of further material. The structure of the aedeagus is similar to that found in a number of other species of the genus in that an apical extension posterior to the gonopore can be interpreted as the apex of a basal process which is fused to the posterior side of the aedeagal shaft to the level of the gonopore with only the apex of the process free.


Australian National Insect Collection