Shaanxinus rufus sp. n.

Figs 51–56

Material. Holotype: ♂ (SMF), China, Shaanxi Prov., S flanks of Taibai Shan, above Houshenzi, secondary broadleaved forest, 1300–1700 m, 23.VI.1997, leg. J. Martens & P. Jäger. Paratypes: 2 ♂ (SMF), same, above Houshenzi, secondary broadleaved forest, 1300–1700 m, 19.VI.1997, leg. J. Martens & P. Jäger; ♂ (ZMMU), same locality, 20.VI.1997, leg. J. Martens & P. Jäger.

Diagnosis. The new species is closely related to Shaanxinus anguilliformis comb. n. described from Hebei Province by Xia et al. (2001) as Walckenaeria anguilliformis Xia, Zhang, Gao, Fei, Rui & Kim 2001. The differences between these species are as follows: the new species is rather larger (length of S. anguilliformis ca 2.21–2.27, of S. rufus sp. n. ca 3.00–3.20); the shape of the palpal tibia (dorsal view) and of the head elevation: in the new species the head elevation is narrowed distally, being rounded in S. anguilliformis, and the clypeus in S. a nguilliformis is much wider than in S. rufus n. sp. (cf. Figs 55, 56 & 57, 58).

Etymology: The specific name is derived from the Latin “ rufus ”, meaning red, referring to the reddish carapace; adjective.

Description. Male. Total length––3.10. Carapace 1.55 long, 1.20 wide, brownish red. Head elevation large and high, directed anteriorly, narrowing distad, as in Figs 55–56. All eyes situated on this elevation. Chelicerae 0,45 long, frontal surface near base slightly convex and serrated. Legs reddish yellow. Leg I, 4.55 long (1.30+0.40+1.25+1.05+0.55), IV––4.25 long (1.15+0.30+1.10+1.20+0.50). Leg II, 5.35 long (1.60+0.40+1.65+1.15+0.55), much longer than leg I. Ti and Mt I–II slightly curved. Chaetotaxy 2.2.2.2. Mt I–IV each with a trichobothrium. TmI––0.82. Palp (Figs 51–54): Palpal tibia with a shallow and rounded hollow. Suprategular apophysis relatively short, flat, membranous apically and partly covering the embolic division. Radix with a large rounded outgrowth, its edge folded and forming a groove hiding distal half of embolus. Opisthosoma 1.70 long, 1.10 wide, pale grey, almost white, with two dorsal, median, wide, parallel, grey, interrupted stripes.

Female. Unknown.