Colletes inspersus sp. n.

(Figs 26 a–e, 32t)

Diagnosis. This species is closely related to C. haubrugei . The females of both species share a very finely and sparsely punctate T1 (Fig. 26 e) in combination with a distinctly protruding and elongate clypeus (Fig. 26 b). C. inspersus sp. n. differs from its relative by a shorter malar area that is about as long as the width of the base of the mandible (about 1.5x as long as wide in C. haubrugei) and the very sparsely punctate T2 (Fig. 26 e) that is densely punctate in C. haugrugei (Fig. 17 b). The male is unknown.

Description. Female, BL=6.5–7.0 mm (Fig. 26 a); head broader than long, HW: HL=50: 40 (Fig. 26 b); gena slightly narrower than eye in lateral view, GW: EW=8: 19 (Fig. 26 a); width of metasoma as broad as that between tegulae, MtW: TW=53: 53. Clypeus nearly as long as broad, with sparse and dispersed punctation (Fig. 26 b); disc of scutum with irregularly dispersed fine punctation, i=0.5–2.0d (Fig. 26 c); malar area medially as long as the width of mandible base; facial fovea narrower than width of antennal flagellum; vertex behind eye rounded; propodeum laterally covered with sparse long erect hairs, integumental sculpture completely visible; punctation on disc of T1 fine, extremely sparse, i=2.5–4.0d (Fig. 26 e); apical hair band on T1 medially interrupted, T2 without broad basal hair band, apical hair band on T2 nearly 1/2 width as the exposed T2 (Fig. 26 e); sloping anterior and lateral anterior parts of T1 sparsely covered with erect long plumose hairs (Figs. 26 d, 26e). Antennal flagellum ventrally black (Figs. 26 a. 26b); distitarsus of all legs blackish brown, other parts black. Face, vertex and scutum covered with yellowish brown erect long plumose hairs, especially pilosity on vertex and scutum intermixed with some black hairs (Figs. 26 b. 26c), mesepisternum covered with longer white plumose hairs (Fig. 26 a).

Male unknown.

Type material. Holotype: 1♀, China, Xizang, Markam Xian (98º30′E 29º06′N), 3800m, 20.VI.1976, coll. Yin- Heng Han; Paratype: 1♀, China, Xizang, Markam Xian (98º30′E 29º06′N), 3800m, 20.VI.1976, coll. Xue-Zhong Zhang.

Distribution. China (Xizang) (Fig. 32 t).

Floral records. No record.

Etymology. The specific epithet is Latin inspersus, meaning the punctation on the disc of T1 and T2 very sparse and fine.