Decliviassus nudus, Dai, Wu, Dietrich, Christopher H. & Zhang, Yalin, 2015

Dai, Wu, Dietrich, Christopher H. & Zhang, Yalin, 2015, A review of the leafhopper tribe Hyalojassini (Hemiptera: Cicadellidae: Iassinae) with description of new taxa, Zootaxa 3911 (1), pp. 1-142 : 19-21

Decliviassus nudus sp. nov.

( Figs 2 E, F, 13A–F)

Male 8.3 mm long, 3.4 mm across humeral angles. Color dull stramineous without small black spots or other markings; pronotum somewhat darker medially than near margins ( Fig. 2 E, F). Hind tibial rows PD, AD, and AV with 18, 13, and 12 setae, respectively; tarsomere I with 4–5 platellae. Pygofer ventral appendage in lateral view with two posterodorsal lobes ( Fig. 13 A), ventral extension falcate ( Fig. 13 B). Subgenital plate obovoid with slight concavity and small group of short fine setae at apex ( Fig. 13 A). Style apophysis in lateral view slightly sinuate distally with pair of small posteroventral preapical teeth ( Fig. 13 C). Aedeagus with shaft relatively slender, apical processes extended ventrad posterad of shaft and curved laterad distally ( Fig. 13 D), shaft apex bifid in posterior view ( Fig. 13 E), curved anterad in lateral view; gonopore apical between bases of paired processes ( Fig. 13 D, E).

Material examined. Holotype ♂, THAILAND: Nakhon Nayok, Khao Yai NP Lum Ta Kong View Point 14º25.565’N 101º23.442’E 72m, Malaise trap 5–12.iv.2007, Pong Sandao leg. T2121. [ QSBG].

Notes. This species differs from others in the genus in lacking dark spots on the dorsum and in the distinctive style and aedeagus. The species name refers to the absence of dark markings.

Figures

FIGURE 2. Dorsal and lateral habitus. A, B, Decliviassus bipunctatus sp. nov.; C, D, Decliviassus maculatus sp. nov.; E, F, Decliviassus nudus sp. nov.; G, H, Kanchanaburiassus maculatus sp. nov.

FIGURE 13. Decliviassus nudus sp. nov. A. Genital capsule, lateral view; B. Ventral process of pygofer side, lateral view; C. Style, lateral view; D. Aedeagus, lateral view; E. Aedeagus, ventral view; F. Connective.