Decliviassus sagittatus, Wang & Wu & Dai, 2018

Wang, Xian-Yi, Wu, Yun-Fei & Dai, Ren-Huai, 2018, Three new species of the leafhopper subfamily Iassinae (Hemiptera: Cicadellidae) from China, Zootaxa 4442 (3), pp. 378-388 : 382-383

Decliviassus sagittatus sp. nov.

Figs. 2, 5, 8 , 37–42 .

Description. Body length. (including tegmina): ♂, 7.2 mm.

Overall coloration bright yellow, without dark spots; forewing membrane translucent.

Ocelli separated by about 5 times distance from ocellus to adjacent eye; clypeal suture prominent, anteclypeus central arched, base front width exceeds the apex ( Fig. 8 ). Scutellum wider than long ( Fig. 2 ).

Male genitalia. Pygofer side ship-shaped, gradually narrowed from base to apex, with numerous macrosetae distally ( Fig. 37 ). Subgenital plate short and broad, triangular, pygofer ventral process short, apex curved slightly ventrad and mesad ( Figs. 37–38 ). Connective straplike, simple ( Fig. 40 ). Style slender, close to the apex slightly bending outwards apically ( Fig. 39 ). Aedeagus hairpin-shaped in lateral aspect, apex almost membranous; dorsal apodeme bifurcate in ventral aspect, shaft apex arrow-shaped; gonopore apical between bases of paired processes ( Figs. 41–42 ).

Material examined. Holotype: ♂, CHINA: Yunnan Province, Menglun City , 2. V. 2015, collected by Wang Jia-jia and Wu Yun-fei;

Remarks. The new species is similar to D. bipunctatus Dai, Dietrich & Zhang, But can be distinguished from the latter by the absence of a pair of brown lateral spots on the pronotum, the structure of the aedeagus, the acuminate style apophysis, and the triangular subgenital plate.

Etymology. The new species name is derived from the Latin word “ sagittatus ”, refering to the arrow-shaped apex of the aedeagus.

Distribution. China (Yunnan Province).

Figures

FIGURES 1–9. 1, 4, 7 Siniassus hamulus sp. nov.; 2, 5, 8. Decliviassus sagittatus sp. nov.; 3, 6, 9. Krisna quadrimaculosus sp. nov.; 1–3. Dorsal view; 4–6. Lateral view; 7–9. Facial view.

FIGURES 37–42. Decliviassus sagittatus sp. nov., 37. Pygofer, lateral view; 38. Subgenital plate and ventral pygofer appendage, ventral view; 39. Style, ventral view; 40. Connective, ventral view; 41. Aedeagus, lateral view; 42. Aedeagus, ventral view.