Riseveinus spinatus, 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 : 261

Riseveinus spinatus sp. nov.

( Figs 18–24 )

Description. Body length (incl. forewing): ♂, 8.2 mm; ♀, 9.7 mm; Head width (incl. eyes): ♂, 1.6 mm, ♀, 1.8 mm; head length: ♂, 1.7 mm, ♀, 2.4 mm. Crown ( Fig. 18 ) about same length as pronotum and scutellum together.

Aedeagus without ventral process; shaft long, gradually narrowing towards apex in lateral view, shaft without apical processes, with thin and spiniform lateral process arising near midlength and extended distad along shaft ( Fig. 24 , marked by red arrow); apodeme bilobed with relatively short dorsolateral extensions ( Figs 24, 25 ).

Female longer than male, with more acute and longer head, and head recurved dorsally ( Figs 21, 22 ); sternite VII distinctly extended posteriorly in midline; ovipositor exceeding apex of pygofer.

Type material. Holotype ♂ ( NMNS), TAIWAN: Taichung, Gu Kuang Tai Dian Rd. ca. 1 km S Rt. 8, 1000m, 24°12'24"N 121°1'27"E, 26.vi.2004, C.H. Dietrich, 27-1, sweeping . Paratypes: 1♂ 1♀ ( NWAFU, INHS), the same as holotype .

Etymology. The specific epithet, from “ spinatus ” meaning spiniferous, refers to aedeagal shaft with thin and spiniform lateral process ( Fig. 24 , marked by red arrow).

Remarks. This species can be easily distinguished from other species of the genus by its long aedeagal shaft, lack of ventral processes, and presence of thin, spiniform lateral preapical processes ( Figs 25, 26 ).

Figures

FIGURES 18–26. Riseveinus Spinatus sp. nov.: 18. male habitus, dorsal view; 19. male habitus, lateral view; 20. male face; 21. female habitus, dorsal view; 22. female habitus, lateral view; 23. male pygofer, lateral view; 24. aedeagal, connective and style, ventral view; 25. aedeagal, lateral view; 26. subgenital plate, ventral view.