Riseveinus cervcornutus, Wang & Dietrich & Zhang, 2018

Wang, Yang, Dietrich, Christopher H. & Zhang, Yalin, 2018, Four new species of the leafhopper genus Riseveinus Li (Hemiptera: Cicadellidae: Evacanthinae) from China and Thailand, Zootaxa 4508 (2), pp. 259-266 : 260-261

Riseveinus cervcornutus sp. nov.

( Figs 1–10 )

Description. Body length (incl. forewing): ♂, 7.3 mm. Head width (incl. eyes): 1.5–1.6 mm; head length: 1.4– 1.5mm. Crown ( Figs 1, 3 ) about 4/5 length of pronotum and scutellum together.

Anal tube without process. Aedeagal shaft long and slender, with pair of slender apical processes; apodeme bilobed, extended into pair of dorsolateral antlerlike extensions, and crossing aedeagal shaft in lateral view; ventral processes absent ( Figs 8, 9 ).

Type material. Holotype ♂ ( QSBG), THAILAND, Chiang Mai, Doi Phahompck NP Kiewiom 2: motane forest, 20°3.331' N 99°8.552' E, 2112 m, 11-18. Vii. 2007, Komwuan Srisom, leg. T2823.

Etymology. The specific epithet, a combination of “ cerv- ” meaning deer, and “ cornutus ” meaning hornlike, refers to the antler-like aedeagal apodemes.

Remarks. This species can be easily distinguished from other species of the genus by its long and slender aedeagal shaft and elongated bilobed aedeagal apodemes ( Fig. 9 ).

Figures

FIGURES 1–10. Riseveinus cervcornutus sp. nov.: 1. male habitus, dorsal view; 2. male habitus, lateral view; 3. male head and thorax, dorsal view; 4. male face; 5. male pygofer, lateral view; 6. male pygofer side, lateral view; 7. connective and style, ventral view; 8. aedeagal, ventral view; 9. aedeagal, lateral view; 10. subgenital plate, ventral view.