Drabescus bicornis, Shang, Suqin, Zhang, Yalin & Shen, Lin, 2009

Shang, Suqin, Zhang, Yalin & Shen, Lin, 2009, New species of the leafhopper genus Drabescus Stål (Hemiptera: Cicadellidae: Selenocephalinae) from Papua New Guinea, Zootaxa 2117, pp. 49-55 : 52-53

3. Drabescus bicornis n. sp. ( Figs 1 C, 4)

Body length (incl. tegmen): 3 6.2 mm.

Body yellowish brown, forewing brown, face yellow, pronotum with dense yellowish spots; scutellum with two yellowish triangular marks along each side. Head slightly wider than pronotum; vertex triangularly produced, midlength longer than length next to eyes; ocelli on margin, separated from corresponding eye; antennae short, situated above midlength of eye in facial view, antennal ledge strong, laterofrontal suture reaching corresponding ocellus; clypeus expanded apically, epistomal suture distinct; pronotum with lateral margin short, carinate, hind margin concave medially; forewing, hyaline, veins distinct, with obscure net-like lines, appendix broad; fore tibia rounded dorsally; hind femur with setal formula 2+1.

Male genitalia with pygofer triangular in lateral view, broad at base and narrowed to apex, with several macrosetae posteriorly; valve short; subgenital plate broad basally over short distance, tapered to digitate apex, with fine setae laterobasally and apically; style with apical process long and blunt, with small beakshaped process laterally at apex, lateral lobe absent; connective short; aedeagus robust, shaft curved strongly dorsally, preatrium with pair of long straight processes directed posteriorly, the latter longer than shaft; connective attached to aedeagus near base of processes.

Holotype: 3 (MNL), Papua New Guinea, Aiyura Exp. Sta, III-1945, coll. B. O. Connor & J. L. Froggatt.

Remarks: This species is very similar to D. evansi in the male genitalia but can be distinguished from the latter in having the style without a lateral lobe and with the apical process long and blunt, with a small beakshaped process laterally at apex.

Etymology: This species is named for the paired aedeagal processes.

Figures

FIGURE 1. 3 adult in dorsal view. A, Drabescus longispinus; B, Drabescus bifurcatus; C, Drabescus bicornis; D, Drabescus wauensis; E, Drabescus brevispinus.