Shaanxinus, Tanasevitch, Andrei V., 2006

Tanasevitch, Andrei V., 2006, On some Linyphiidae of China, mainly from Taibai Shan, Qinling Mountains, Shaanxi Province (Arachnida: Araneae), Zootaxa 1325, pp. 277-311 : 293

Shaanxinus gen. n.

Type species. Shaanxinus rufus sp. n.

Etymology. The generic name is derived from the Shaanxi Province, China. Gender masculine.

Diagnosis. Rather large, reddish­coloured erigonines, total length 2.21–3.15. The genus is characterised by a combination of the following characters: male carapace modified, with a high head elevation. Frontal surface of chelicerae without teeth, but with a serrate area. Chaetotaxy 2.2.2.2. Each metatarsus with a trichobothrium. TmI 0.80–0.85. Leg II much longer than leg I. Palpal tibia with a deep apical hollow. Paracymbium unique in shape, as in Figs 51–52 . Suprategular apophysis short, flat, membranous distally and partly covering the embolic division. Radix large and flat, highly sclerotised, with a large rounded outgrowth, edge of latter folded, forming a groove hiding distal half of embolus. Base of embolus thick, rest of embolus thin and rather long.

Taxonomic remarks. The combination of the unique characters poses difficulties regarding placement of this genus. The taxonomic position of this genus is therefore unclear.

Species included. Shaanxinus rufus sp. n. and Shaanxinus anguilliformis (Xia, Zhang, Gao, Fei, Rui & Kim 2001) comb. n.

Figures

FIGURES 51 – 58. Shaanxinus rufus gen. n. sp. n., paratype (51 – 56), & Shaanxinus anguilliformis (Xia, Zhang, Gao, Fei, Rui & Kim, 2001) comb. n. (57, 58, after authors, not to scale). 55 – 58 male carapace (55 & 57 lateral view, 56 & 58 dorsal view), 51 right palp (retrolateral view), 52 palpal tibia and paracymbium (dorsal view), 53 suprategular apophysis (lateral view), 54 embolic division (ventral view). Abbreviations: E embolus, ED embolic division, R radix, SA suprategular apophysis.