Drabescus bifurcatus, 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 : 51-52

2. Drabescus bifurcatus n. sp. ( Figs 1 B, 3)

Body length (incl. tegmen): 3 5.8–6.2 mm, Ƥ 6.8–7.2 mm.

Body dark brown, forewing brown with transverse band across wing at apex of clavus, and round spot on area of forth apical cell and on connection between medial and outer anteapical cell; pronotum with dense yellowish spots.

Head nearly as wide as pronotum; vertex with fore margin triangularly produced, midlength longer than length next to eyes; ocelli on margin, approximately 4x own diameter from corresponding eye; antennae short, situated above midlength of eye in facial view, antennal ledge weak. Pronotum with lateral margin short, carinate, hind margin slightly concave. Forewing with veins distinct, appendix narrow. Fore tibia rounded dorsally; hind femur with apical setal formula 2+1.

Male genitalia with pygofer broadened at base and narrowed apically, with long process posteriorly. Valve semicircular. Subgenital plate with basal part broad, narrowed to midlength with apical half digitate, with many fine setae along laterobasal margin. Style with apical process digitate, slightly curved laterally; lateral lobe short, with several fine setae dorsally. Connective Y-shaped, with apical margin strongly incurved. Aedeagus with elongate process at base of gonopore ventrally, directed parallel to shaft; dorsal apodeme elongate.

Holotype: 3 (MNL), Papua New Guinea: Lake Habbena, 3250–3300m, 23-VIII-1938, coll. L. J. Toxopeus, Neth. Ind.-American New Guinea Exp. Paratypes: Papua New Guinea: 1Ƥ, same data as holotype; 23, 3ƤƤ, same data as holotype, except 20-VIII-1938; 33, Araucaria Camp, 800m: 7, 9-VIII-1938; 13, Bernhard Camp, 50m, XI-1938, coll. J. Olthof. All coll. L. J. Toxopeus, Neth. Ind.-American New Guinea Exp. (MNL).

Remarks: This species is similar to D. gressitti in external appearance but differs from the latter in: 1) forewing with pale transverse band across wing at apex of clavus; 2) pygofer broad at base and narrowing to apex, with long process posteriorly; 3) connective with apical margin dorsally incurved; 4) aedeagus with shaft bifurcate at apex.

Etymology: This species is named for its bifurcate apex of the aedeagus.

Figures

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