Austrimonus clavatus

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: 323

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Austrimonus clavatus


Austrimonus clavatus  sp.nov. (Figs 15–16, 28, 31C)

Holotype, male, main dam site, Duncan Highway, W. Australia,, G.W. Kendrick, A. Douglas leg. ASCTHE007939 ( WAM) 

Paratypes, 1 male, 1 female, mounted together, Kimberley, W.A., vi.1966, J.W. Evans (ASCU)

Description. Face pale orange fading to cream laterally, with fine brown transverse line dorsally at margin with vertex. Vertex (Fig. 16) pale cream with faint orange band across middle with slight depression submarginally. Pronotum and scutellum (Fig. 16) pale orange anteriorly, pale testaceous posteriorly. Tegmen (Fig. 15) whitish translucent with transverse translucent band at about midlength, veins and markings on crossveins and in cells brown.

Genitalia. Male: Subgenital plates ( Fig. 28BView FIGURE 28) narrow triangular tapering into apical process. Paramere ( Fig. 28CView FIGURE 28) with preapical lobe well developed, apical lobe curved laterally with small preapical tooth and finely acute apex. Connective ( Fig. 28EView FIGURE 28) long with stem distinctly longer than arms. Aedeagus in posterior view ( Fig. 28DView FIGURE 28) with shafts obscured by large basal processes diverging gradually from base, evenly broad throughout then tapering to acute apex; in lateral view ( Fig. 28FView FIGURE 28), basal processes extend dorsally, slightly curved posteriorly at apex; shafts anterior to processes, fused to processes for short distance, then divergent from them, parallel to basal apodeme, gonopore at about three quarter length of processes, shaft continuing beyond gonopore anteriorly and expanded to form large truncate process terminating level with apices of basal processes. Basal apodeme ( Fig. 28FView FIGURE 28) complex with accessory process extending anteriorly. Female: Posterior margin of pregenital sternite ( Fig. 31CView FIGURE 31) transverse with deep medial emargination.

Etymology. The species name refers to the club-shaped apical process on each shaft in lateral view (clavus, Latin = club).

Comments. This species has affinity with M. luteus  which also has orange colouring on the head and thorax. The apex of each shaft beyond the gonopore is expanded to form a club shaped process in this species but not in M. luteus  . The hind margin of the female pregenital sternite differs from those of A. melaleucae  and A. apicalis  , which are the only other species for which females are known, in having the medial section not produced posteriorly but bearing a single medial emargination.


Western Australian Museum