Chinaocerus sexspinosus Zhang & Webb, 2018

Zhang, Bin, Chi, Wenfeng & Webb, M. D., 2018, Description of two new idiocerine leafhoppers of the genus Chinaocerus (Hemiptera: Cicadellidae) from southwestern China, Zootaxa 4457 (4), pp. 583-588 : 585-588

Chinaocerus sexspinosus Zhang & Webb sp. nov.

( Figs 3–4 , 7–8 , 19–28 )

Male. Pale brown. Vertex ( Fig. 3 ) with two small black spots adjacent to eyes. Face ( Fig. 7 ) pale yellow. Eyes and ocelli lemon yellow ( Fig. 7 ). Pronotum ( Fig. 3 ) with pair of triangular black marks on anterior margin. Scutellum yellowish brown with basal triangles dark brown, a round spot on either side of median line. Forewings ( Fig. 3 ) greyish brown, veins brown.

Male genitalia. Pygofer ( Figs 21–22 ) with dorsoposterior corner tapered to narrowly rounded apex, posteroventral margin without denticles. Anal collar ( Figs 21–22 ) with arms elongate with apices hook-like, twisted and directed inward, 0.4 times as long as pygofer. Style ( Fig. 23 ) elongate, apophysis with outer margin bearing approximately 12 fine subapical setae and 4 more apical macrosetae. Aedeagus ( Figs 26, 27 ) with well developed dorsal apodeme and short preatrium; shaft elongate, laterally compressed and distinctly sinuate with rounded upturned apex in lateral view; subapically with three pairs of processes: one pair arising laterally, two pair arising ventrally, the more dorsal longer processes arising close to gonopore and with outer margin serrated, the short processes situated slightly below the longer processes.

Male basal abdominal apodemes ( Fig. 20 ) longer than ventral ones, attaining posterior margin of sternite V.

Female. Similar in overall coloration to male ( Fig. 4 ). but vertex and upper part of face with two pairs of blackish spots: one pair larger near to median line, other pair adjacent to eyes ( Fig. 8 ); pronotum with a pair darkish brown stripes on median area and scutellum with basal triangles and central spots paler.

Female genitalia. Second valvulae ( Fig. 28 ) regularly broadened in lateral view, bearing approximately 9 teeth along dorsal margin.

Measurements (mm). Male: body length 4.9, face length 1.28, width 1.6; distance between ocelli 0.47; distance from ocellus to eyes 0.25; medial length of pronotum 0.57, width 1.37; scutellum length 0.77, width 1.02. Female: body length 4.8–5.0, face length 1.27–1.3, width 1.61–1.63; distance between ocelli 0.47–0.5; distance from ocellus to eyes 0.25–0.3; medial length of pronotum 0.55–0.57, width 1.37–1.38; scutellum length 0.8–0.83, width 1.03–1.05.

Material examined. Holotype: ♂, China, Yunnan Province, Lijiang County, 6. viii.2017, Bin Zhang . Paratypes: 5♀♀, same date as holotype.

Host plant. Unknown.

Distribution. China: Yunnan.

Diagnosis. Chinaocerus sexspinosus can be distinguished by its sinuate aedeagal shaft in lateral view with three subapical pairs of processes and by the stout apical setae of the style.

Etymology. The specific epithet is derived from the Latin words sex, meaning six, and spinosus, meaning spiny, referring to the six processes of the aedeagus.

Figures

FIGURE 1–4. Chinaocerus dorsal habitus. 1–2. Chinaocerus tubulatus; 3–4. Chinaocerus sexspinosus; 1, 3. Male; 2, 4. Female.

FIGURE 5–8. Chinaocerus face. 5–6. Chinaocerus tubulatus; 7–8. Chinaocerus sexspinosus; 5, 7. Male; 6, 8. Female.

FIGURE 19–28. Chinaocerus sexspinosus sp. nov. 19. Forewing; 20. Dorsal and ventral abdominal apodemes, dorsal view; 21. Genital capsule, lateral view; 22. Genital capsule, dorsal view; 23. Style, lateral view; 24. Connective lateral view; 25. Connective ventral view; 26. Aedeagus, lateral view; 27. Aedeagus, ventral view; 28. Apex of second valvula of ovipositor, lateral view.