Chinaocerus Zhang & Li, 2016

Liu, Guihua, Yang, Hefeng, Li, Guoqing, Chen, Zhenning & Zhang, Bin, 2022, A new species of the idiocerine leafhopper genus Chinaocerus Zhang & Li (Hemiptera: Cicadellidae) from northwest China, with a checklist and key to species, Zootaxa 5105 (3), pp. 445-450 : 446

Genus Chinaocerus Zhang & Li, 2016

Chinaocerus Zhang & Li, 2016: 237 .

Type-species: Chinaocerus bispinatus Zhang & Li , by original designation.

Chinaocerus Zhang & Li ; Xue, Viraktamath & Zhang, 2016: 406; Zhang & Webb, 2018: 584.

Medium-sized leafhoppers. Length usually from 4.9 to 6.2 mm.

Body generally yellowish brown to pale brown, with black to dark brown markings on head and thorax.

Head broader than pronotum, shagreen. Face shagreen, slightly wider across eyes than long. Ocelli near or above ends of fronal sutures, closer to adjacent eyes than to each other. Anteclypeus projecting beyond genae, expanded apically, lateral margins slightly concave at midlength. Antenna with distal part of flagellum dilatated in male. Lora small, slightly elevated above level of genae. Pronotum shagreen with anterior margin convexly rounded, lateral margins moderately long, posterior margin slightly concave. Scutellum shagreen subtriangular, slightly broader than long, and slightly longer than pronotum. Forewing with three subapical cells, outer subapical cell smallest, central and outer cells closed, inner subapical cell open; four apical cells, outer apical cell longest; appendix moderately broad. Hind femoral macrosetae 2+0, hind tibial macrosetae PD14–17, AD5–6, AV7–8. Hind basitarsus with three platellae.

Pygofer elongate and narrow, with dorsal anterior apodeme poorly developed, distinctly finely dentate along caudoventral margin, without ventral process. Anal collar well developed with narrow and elongate processes. Subgenital plates elongate with long fine setae. Male valve distinctly wider than long, anterior margin straight, posterior margin undulate with rounded median projection. Style long, apophysis evenly curved, and usually bearing a row of fine lateral setae. Connective T-shaped, heavily pigmented. Aedeagus with prominent basal apodeme expanded laterad, aedeagal shaft tubular and slightly compressed, with pair of subapical processes, gonopore situated subapically on posterior surface.

Female ovipositor strongly projecting beyond pygofer. Sternite VII convexly produced, posterior margin of median area narrowly concave in ventral view. Second valvula regularly broadened in lateral view, bearing approximately 10–27 teeth along dorsal margin.

Chinaocerus differs from Idiocerus in having the caudoventral margin of the male pygofer dentate (except in C. sexspinosus Zhang & Webb ), a pair of subapical processes arising from the ventral surface of the aedeagal shaft and the female with a more elongate ovipositor.