Asymmetrasca dahaituoensis, Liu and Zhang, sp. nov.

(Figs 3–12, 86–89)

Type materials. China: holotype ♂, Hebei Prov.: Dahaituo, Chicheng, 7.viii. 2006, coll. Yani Duan; paratypes: 2♂♂, same data as holotype. All in NWAFU.

Length: ♂ 2.8 mm.

Ground colour of body yellow-greenish (Fig. 89). Crown with light green patch on each side of coronal suture (Fig. 86). Eyes black-brown. Pronotum with irregular patches on anterior margin of pronotum and under eyes. Forewing and hind wing semitransparent. Abdomen yellow. Legs pale yellow (Fig. 88).

Ventral abdominal apodemes parallel-sided, reaching segment 5 (Fig. 5). Male pygofer in lateral view with posterior margin broadly rounded, 15 stout setae along posterior margin (Fig. 3); pygofer appendage curved posterodorsad following posterior margin of pygofer (Fig. 4). Anal hook well-developed, with numerous apical papillae (Fig. 10). Subgenital plate in lateral view, curved gradually caudodorsad apically, not expanded apically; with numerous macrosetae and fine setae somewhat irregular; setal group A with 3 long stout setae and group B with 24–26 short microsetae on apical half (Fig. 12). Paramere with 5 teeth on dentifer, 7 setae subapically, apex nearly straight in lateral view, curved laterad in ventral view (Fig. 11). Connective broad, posterior margin medially emarginate (Fig. 7). Aedeagal shaft well sclerotized, preatrium long and straight, nearly as long as shaft; dorsal apodeme well developed; shaft somewhat sinuate in lateral view, with several denticuli dorsally; distal process nearly straight in posterior view, apex not expanded, without teeth, bent slightly ventrad at tip (Figs 8, 9).

Etymology. The species name is derived from the type locality, Dahaituo, in Hebei Province.

Diagnosis. This new species is similar to Empoasca sakaii Dworakowska, 1982, but differs in having the apex of the aedeagal process narrow rather than expanded apically and the preatrium relatively long and narrow in lateral view.