Sinonirvana, Gao, Min, Dai, Wu & Zhang, Yalin, 2014

Gao, Min, Dai, Wu & Zhang, Yalin, 2014, Two new Nirvanini genera from China (Hemiptera: Cicadellidae), Zootaxa 3841 (4), pp. 491-500 : 496-497

Sinonirvana gen. nov.

Type species: Sinonirvana hirsuta Gao et Zhang sp. nov.

Description. Medium-sized leafhoppers. Head triangularly produced anteriorly, about as long as 4/3 length of pronotum. Crown nearly flat, entire anterior and lateral margins separated from face by distinct carina; coronal suture obvious; eyes fairly large; lateral margins in front of eyes straight and triangularly produced anteriorly; ocelli small, submarginal, some distance in front of inner margin of eyes (Fig. 3). Face slightly convex and centrally carinate in basal area. Anteclypeus wide basally, tapered in distal two thirds; apex truncate, even with genal margin; lorum small, narrow, well-separated from lateral margin of gena (Fig. 9). Pronotum slightly narrower than head, anterior margin roundly produced, posterior margin slightly concave, sides carinate. Scutellum with transverse depression distinct, nearly reaching lateral margin (Fig. 3). Forewing with venation obscure; four apical cells; appendix very narrow (Figs. 3, 6). Hind wing with venation complete?four apical cells present, submarginal vein coincident with costal margin and very close to apical margin. Front femur with setae AM1 and AV1 enlarged; intercalary row with 12 setae with more distal setae progressively larger; row AV with one enlarged basal seta and ca. 6 shorter setae more distad; PV setae absent. Hind femur macrosetal formula 2+1+1; tibia with ca. 20, 13, 12, and 29 setae in rows AD, PD, PV, and AV, respectively.

Male genitalia. Pygophore lobe well developed, with several macrosetae at posterior margin, with or without process at ventral margin. Anal tube not long but strong, well sclerotized, with paired basolateral lobes. Subgenital plate weakly subsegmented at base, subparallel through most of length with single ventral longitudinal row of macrosetae; numerous long fine setae distributed over surface laterad of macrosetae. Style apical process short, curved laterally, apex expanded and cheliform; lateral lobe well developed with group of small setae. Connective Y-shaped with arms short, stem long and arched in lateral view. Aedeagus without atrium, shaft with basal half straight and apical half strongly curved ventrally, with pair of processes, gonopore apical on posterior surface.

Female genitalia. Female with sternite VII produced medially. Ovipositor is similar to that of Decursinirvana.

Etymology. The name of the genus, which is feminine, was derived by combining Sino -, meaning Chinese, with - nirvana , a common suffix for genus names in this tribe.

Remarks. This new genus is similar to Decursusnirvana gen. nov., but can be distinguished from the latter by the following: the head is more elongate and the anteclypeus is much broader and does not extend beyond the margin of the gena. Also, the pygofer lobe is solid (not divided into dorsal and ventral parts) and the subgenital plate has numerous long, fine setae (lacking in the latter).