Asymmetrasca uncus, Liu and Zhang

Liu, Yang, Fletcher, Murray J., Dietrich, Christopher H. & Zhang, Ya-Lin, 2014, New species and records of Asymmetrasca (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini) from China and name changes in Empoasca (Matsumurasca), Zootaxa 3768 (3), pp. 327-350 : 340-341

Asymmetrasca uncus, Liu and Zhang , sp. nov.

( Figs 65–74 , 127–130 )

Type materials. China: holotype ♂, Fujian Prov.: Tongmucun, Wuyi, 3.viii.2009, coll. Yanghui Cao; paratypes: 2♂♂, same data as holotype; Fujian Prov.: 2♂♂, Sangang, 9.vii.1984, coll. Zhixin Cui; Guizhou Prov.: 1♂, Huaxi, 25.vii.2001, coll. Qiang Sun, light trap. All in NWAFU.

Length: ♂ 3.5 mm–3.6 mm.

Ground colour of body gray green ( Fig. 130 ). Crown with light green patch on each side of coronal suture ( Fig. 127 ). Eyes brown. Pronotum with irregular patches on anterior margin of pronotum and under eyes. Forewing smoky, hind wing hyaline. Abdomen yellow. Legs pale yellow to green ( Fig. 129 ).

Ventral abdominal apodemes subparallel-sided, reaching midlength of segment 5 ( Fig. 67 ). Male pygofer in lateral view with posterior margin broadly rounded, ornamented with 15 rigid setae on each side of pygofer lobe ( Fig. 65 ); pygofer appendage not exceeding pygofer margin, tapering to apex ( Fig. 68 ). Anal appendage swollen at base, narrowing to apex, with numerous papillae apically ( Fig. 71 ). Subgenital plate in lateral view, curved gradually caudodorsad apically, expanded apically; with numerous macrosetae and fine setae distributed somewhat irregularly; group A with 4 long stout setae subbasally, group B with 19 short microsetae on apical half, group C double near base, with single row of macrosetae distally, group D irregular with numerous elongate setae ( Fig. 74 ). Paramere with 3 teeth on dentifer, 7 setae subapically ( Fig. 73 ). Connective broad, anterior margin concave, strongly sclerotized along mid-line ( Fig. 72 ). Aedeagus with preatrium well developed, shorter and broader than shaft; dorsal apodeme well developed; shaft in lateral view nearly straight, tapered, without dorsal denticuli; apical process strongly and evenly curved, apex expanded and slightly bifid ( Figs 69, 70 ).

Etymology. The specific epithet is based on the Latin " uncus " meaning "hook" and refers to the hooklike apical aedeagal process.

Diagnosis. The new species is similar to Empoasca cienka Dworakowska, 1982 , but differs in its long hooklike apical aedeagal process.

Figures

FIGURES 65 – 74. Asymmetrasca uncus, 65, male pygofer, lateral view; 66, dorsal bridge; 67, abdominal apodemes; 68, pygofer appendage; 69, aedeagus, ventral view; 70, aedeagus, lateral view; 71, anal tube appendage; 72, connective; 73, paramere; 74, subgenital plate.

FIGURES 127 – 130. Asymmetrasca uncus, 127, head and thorax, dorsal view; 128, face; 129, whole body, lateral view; 130, whole body, dorsal view.