Decliviassus maculatus, 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 : 16-18

Decliviassus maculatus sp. nov.

( Figs 2 C, D, 12A–F)

Male 6.7–7.4 mm long, 2.9–3.1 mm across humeral angles. Color dull stramineous; vertex with pair of brown maculae dorsomesad of ocelli; pronotum, scutellum and forewing with numerous small black spots, some on forewing merging to form larger spots; exposed part of mesonotum with pair of submedial transverse black lines ( Fig. 2 C, D). Hind tibia setal rows PD, AD, and AV with 19, 12, and 14 macrosetae respectively; tarsomere I with 6 platellae.

Pygofer ventral appendage in lateral view with two posterodorsal lobes ( Fig. 12 A), small triangular projection near mid-height, and more elongate ventral extension bearing apical notch ( Fig. 12 E). Subgenital plate obovoid with slight concavity and small group of short fine setae at apex ( Fig. 12 F). Style apophysis in lateral view slightly tapered to midlength, gradually broadened distad to footlike, obliquely truncate apex ( Fig. 12 D). Aedeagus with shaft in lateral view slightly sinuate with low dorsal hump near base, margins gradually tapered toward apex; distal processes longer than maximum width of shaft, in posterior view extended laterad with apices slightly upturned, in lateral view extended posterad; apex in posterior view bifid, in lateral view curved slightly anterad; gonopore short, apical ( Fig. 12 B, C).

Material examined. Holotype ♂, THAILAND: Sakon Nakhon, Phu Phan NP creek at entrance of Huay Nam Pung forest unit 16º54.53’N 103º54.266’E 281 m, Malaise trap 13–19.xi.2006, Winlon Khongnara leg. T1097. [ QSBG]. Paratypes: 1♂, same data as holotype except 16º55.789’N 103º54.158’E 305m [ INHS]; 1♂, Thailand, Ubon Ratchathanni, Pha Taem NP Rong Hi 15º40.016’N 105º30.502’E 246m, Malaise trap 1–7.i.2007, Thorgkam & Pakdee leg. T1474 [ NWAF].

Notes. This species is easily distinguishable by the presence of numerous black spots on the dorsum. The species name refers to the black 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 12. Decliviassus maculatus sp. nov. A. Genital capsule, lateral view; B. Aedeagus, lateral view; C. Apex of Aedeagus, ventral view; D. Style, lateral view; E. Ventral process of pygofer side, caudolateral view; F. Subgenital plates, ventral view.