Peribalus (Asioperibalus) przewalskii Belousova, 2007

Peribalus (Asioperibalus) przewalskii Belousova , sp. n.

Diagnosis. The species differs from the closely related species in its large subrectangular head, spermatheca with a spherical bulb and poorly developed flanges, and also in the length ratio of 2nd and 3rd antennal segments.

Description. Body sandy-colored, with fine black punctation densest on head, at sides of pronotum, and in basal part of scutellum. White edging running along lateral costa of pronotum and along base of elytra; apex of scutellum pale. Underside of body pale, with weak black punctation in central parts of sternites. Abdominal segments yellow, with black spots in anterior and posterior corners of tergites. Body rather wide, length 8.40–8.60 (8.53) mm; b. lw 1.59–1.64 (1.61).

Head subrectangular ( Fig. 99 View Figs ) [h. wl 1.07–1.09 (1.08)], large, l. bh 3.73–3.82 (3.78). Jugae flat, slightly emarginate before eyes, rounded apically, longer than clypeus, not covering apex of clypeus. Eye medium-sized, ds 1.4–1.41 (1.4). l. ba 2.03–2.12 (2.07), 3rd antennal segment 1.14–1.24 (1.2) times as long as 2nd.

Pronotum transverse [p. wl 2.14–2.25 (2.2)], with straight flattened lateral margins bordered with fine costa slightly deflexed upwards. Scutellum of subequal length and width, s. lw 0.91–0.97 (0.94).

Female genitalia. Spermatheca with small spherical bulb bearing short processes; sclerotized duct with inconspicuous widening at base ( Fig. 10 View Figs ). Flanges poorly developed, occasionally absent.

Distribution. The species is known from the eastern and northern provinces of China and Mongolia.

Material examined. Holotype: ♀, China, Huang He River valley , late July (Przhewalski) . Paratypes: China. 1 ♀, Muny-Ula Mt. Range, N of Ordos , second half of June (Przhewalski) . Mongolia. 1 ♀, northwestern Mongolia, Lake Uoideslon , second half of July ; 1 ♀, Töv Aimak, northern slope of Mt. Bogdo-Ula near Ulan Bator, 22.VI.1967 (Emeljanov) ; 1 ♀, Dornodgovi Aimak, southern coast of Lake Tenger-Nur , 5.VIII.1978 (Emeljanov) .