Drabescus ineffectus, Walker

Shang, Suqin, Webb, M. D. & Zhang, Yalin, 2014, Key to Chinese species of the leafhopper genus Drabescus (Hemiptera: Cicadellidae: Deltocephalinae) with description of a new species, Zootaxa 3852 (1), pp. 141-146 : 143

2. Drabescus ineffectus ? (Walker)

( Fig. 2 )

Material examined. CHINA: Fujian Province, 1♂, Sangang, 15.vii.1984, coll. Wang Sizheng; Guangdong Prov., Taam Yuan Tung, Lin-halen (District), coll. F. K. To, 2♀♀, 26–27.v.1934, 3♀♀, 29–30.v.1934; 1♀, 15–19.vi.1934; 1♀, Lung-tau shan summit, 1200m, 6.vi.1947, coll. Gressitt & T. S. Lam; 1♀, Mt. Longtou, Qujiang, vi.1947 (all ZSU); Guangxi Prov., 1♀, Mt. Shengtang, Jinxiu, 900m, 17.v.1999, coll. Zhang Xuezhong (IOZ).

Remarks. The external appearance and genitalia of the single male examined here and males identified as D. ineffectus by Zhang & Webb (1996, Figs 72, 320–326, 541) are similar but the genitalia of the former differs in having two rather than one ventro-posterior pygofer process and the aedeagal shaft more elongate with the posterior flanges broader. There is also variation in the pregenital sternite ( Figs 2 B–D) in females examined of similar appearance to the males from the same localities. Further material is needed to establish if the observed differences are specific or represent variation of a single species.

Figures

FIGURE 2. Drabescus ineffectus (?). A. adult, dorsal view; B – D. female terminalia, ventral view showing variation in pregenital sternite (B, C: Taam Yuan Tung, D: Mt Shengtang); E. male pygofer, left lateral view; F. valve, ventral view; G. subgenital plate, ventral view; H. aedeagus, lateral view; I. style and connective, ventral view