Oecleopsis spinosus sp. nov.

(Figs 7–16)

Description. Length (from apex of vertex to tip of fore wings): 3 6.0 mm, Ƥ 7.0– 7.1 mm.

Postclypeus yellowish brown; frons dark brown, median carina and lateral carinae yellowish; rostrum dark brown, moderately long, reaching caudal margin of hind coxae; ocelli small but distinct. Vertex black, 2.6 times as long as broad, subapical carina deeply V-shaped; median longitudinal carina rudimentary, only distinct in basal half of disc (Fig. 16); outer sides of vertex brown with a white spot; genae yellow. Tegmina yellowish, semihyaline, 3.2 times as long as broad, veins yellowish with brown granules; RA unbranched, RP apically trifurcated, MA apically trifurcated, MP apically bifurcated, CuA bifurcated; Sc+R forked basad of fork CuA1+CuA2; transverse veins thickened and darkened up to dark brown, expanded apices of longitudinal veins fused together with peripheral vein; stigma yellow; apex with eleven cells (Fig. 7). Abdomen dark brown, with yellow posterior margins of sternites; legs with femora brown, tibiae and tarsi yellowish. Chaetotaxy of hind tarsomere 7/5.

Male genitalia. Ventromedian process in ventral view generally triangular in outline, short, stout, broadest at base, its apex tapering and bluntly pointed (Fig. 8). Genital styles symmetrical, T-shaped in ventral view (Fig. 13). Aedeagus in total with four spines. Apical process of flagellum not bifurcated, awl-shaped, curving right-ventrad. Two subapical processes, dorsal one expanded at base, acuminating to apex, curving leftdorsad; ventral one broadest basally, then abruptly constricted near midlength and acuminating to apex, bent left-ventrad. Spine on right side at apex of aedeagus shorter (Figs 10–12).

Female genitalia. Caudal border of pregenital sternite shallowly excavated in middle, with two small convex processes submedially. Anal segment rectangular (Fig. 15).

Material examined. Holotype 3, CHINA: Shaanxi, Foping Nature Reserve, 1-VIII-1991 (Y. L. Wang & H. Jiang) (NWAFU). Paratypes. CHINA: 1 3, same data as holotype, (NWAFU); 1 Ƥ, Shaanxi, Foping Nature Reserve, 1-VIII-1991 (Y. L. Wang & M. N. Wang) (NWAFU).

Etymology. The Latin term ‘spinous’ means ‘acuminate as a spine’, referring to the apical process of the flagellum which is not bifurcated but spinelike.

Distribution. China (Shaanxi).

Remarks. This species is externally similar to O. sinicus, but can be distinguished from the latter by the following characters: 1) the apical process of the flagellum not bifurcated, awl-shaped, curving right-ventrad; 2) two subapical processes in total, the dorsal one expanded at base, acuminating to apex, curving left-dorsad; the ventral one broadest at base, then abruptly constricted near midlength and acuminating to apex, bent leftventrad; 3) the spine on the right side at the apex of the aedeagus is shorter than in O. sinicus .