Chelonus (Microchelonus) linzhiensis sp. nov.

Figs 41–44

Material examined. Holotype: female, Linzhi, Xizang Prov., China, 2.VIII.2003, Dekyi Metok, No. 20034177 (ZJUH) . Paratype: 1 male, same label data as holotype but No. 20035275 .

Diagnosis. This new species is similar to C. (M.) pectinophorae (Cushman, 1931), sharing the metasomal carapace being widest after middle and almost 2.0 × longer than wide in dorsal view (Fig. 42E), and carapace distinctly widened posteriorly in lateral view (Fig. 42C), but the two species can be separated by the following characters: legs partly blackish (versus mainly yellow in C. (M.) pectinophorae); temples strongly narrowed behind eyes (Fig. 42G) (versus slightly narrowed to widened); face coarsely and irregularly punctate-rugose medially (Fig. 42F) (versus transversely punctate-rugose).

Description. Holotype, female, length of body 3.7 mm, of fore wing 2.6 mm.

Head. Head transverse, width of head 3.1 × its dorsal length, occiput strongly excavated; antennomeres 16, antenna filiform, not widened, length of 3 rd and penultimate antennomeres 2.7 × and 1.8 × their width, respectively (Fig. 42H); eye in dorsal view 0.8 × longer than temple; OOL: OD: POL=21: 7: 13; temple distinctly narrowed behind eyes (Fig. 42G); frons and vertex finely striate-rugulose (Fig. 42G); face flat, coarsely irregular punctate-rugose medially, width of face 1.7 × its height; eyes slightly converging ventrally; clypeus densely punctate, 2.0 × wider than high, apical margin truncate medially, shiny; distance between tentorial pits 1.6 × distance between pits and eyes; clypeus extending below or far below lower level of eyes (Fig. 42F).

Mesosoma. Length of mesosoma 1.5 × its height; side of pronotum finely punctate, mesopleuron densely setose (Fig. 42B); notauli distinct, mesoscutum coarsely reticulate-rugose; scutellum evenly convex, rugulose medially, rugose laterally; scutellar suture comparatively deep, narrow, with carinae; propodeum coarsely rugose, lateral tubercles rather small (Fig. 424C).

Wings. Vein r straight; marginal cell 0.8 × as long as pterostigma; pterostigma 3.2 × longer than wide; r: 3-SR: SR1=14: 17: 45; SR1 curved towards pterostigma; marginal cell 1.2 × longer than second submarginal cell; 1-CU1: 2-CU1=18: 29; 2-R1 short (Fig. 42A).

Legs. Hind coxa densely setose laterally, mainly smooth and shiny; length of hind femur and tibia 3.3 × and 5.0 × their maximum width, respectively; length of inner hind tibial spur 0.5 × hind basitarsus.

Metasoma. Length of carapace 1.9 × its maximum width in dorsal view, widest after middle, apically slightly narrowed; carapace rugose-reticulate, longitudinal elements less clear, but visible up to middle, rugose apically (Fig. 42E); carapace in lateral view 2.3 × longer than high, posterior height of metasoma 1.9 × its anterior height, posteriorly rounded, carapace apically distinctly incurved (Fig. 42D).

Colour. Body black; antenna black; palpi light brown; pterostigma dark brown; middle of wing and its veins dark brown, wing base and its veins light yellowish; legs partly black but hind tibia with wide pale yellowish ring; carapace with 2 large pale yellowish spots in basal 1/3, almost connected medially.

Male. Antennomeres 25, antenna filiform, not widened medially (Fig. 44I); apical aperture in posterior view small, oval and median process of aperture horizontal oval (Fig. 44F); other characters as in female.

Biology. Unknown.

Distribution. China (Xizang).

Etymology. Named after its type locality, a city in the southeast of Xizang (Tibet).