Arcuphantes chinensis, 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 : 282-284

Arcuphantes chinensis sp. n.

Figs 12–18

Material. Holotype ♂ ( SMF), China, Shaanxi Prov., S flanks of Taibai Shan, above Houshenzi, secondary broadleaved forest, 1300–1700 m, 3.VI.1997, leg. J. Martens & P. Jäger. Paratypes: 1 ♂, 3 Ψ, ( SMF), together with holotype.

Diagnosis. The shape of the epigyne resembles that of the Chinese A. curvatus Sha & Zhu 1987 and A. ramosus Sha & Zhu 1987 , both described from female material alone. The new species is easily distinguished by the non­extended lateral lobes, whereas in A. curvatus and A. ramosus the lateral lobes are protruding and easily visible on both sides of the scape.

Etymology. The specific name is derived from the name of the country of origin; adjective.

Description. Male. Total length––2.13. Carapace 1.00 long, 0.90 wide, pale brown. Chelicerae 0.48 long. Legs yellow, tibia with a grey median band, darker distally. Leg I, 5.93 long (1.53+0.25+1.75+1.40+1.00), IV––5.15 long (1.50+0.20+1.40+1.35+0.70). Chaetotaxy. Tibial spines mostly abraded, Mt I–IV: 1­0­0­0. Mt I–III with a trichobothrium, TmI––0.21. Palp ( Figs 12–15 ): Tibia unmodified. Cymbium without proximal outgrowths. Paracymbium complex in shape, with three processes proximally and two dentiform outgrowths distally. Opisthosoma 1.18 long, 0.75 wide, pale dorsally, with a narrow, grey, median stripe, indistinct grey spots on both sides and randomly scattered white spotlets.

Female. Total length––2.70. Carapace 0.93 long, 0.75 wide. Chelicerae 0.58 long. Leg I, 6.23 long (1.68+0.32+1.70+1.55+0.98), IV––?. TmI––0.16. Opisthosoma 1.98 long, 1.30 wide. Epigyne ( Figs 16–18 ): Scape long, gradually narrowed distad, coiled. Lateral lobes not extended. Body and leg colouration, chaetotaxy as in male.

Figures

FIGURES 12 – 18. Arcuphantes chinensis sp. n., paratypes. 12, 13 right palp (12 retrolateral view, 13 ventral view), 14, 15 paracymbium (14 lateral view, 15 frontal view), 16 – 18 epigyne (16 lateral view, 17 dorsal view, 18 ventral view). Abbreviations: LL lateral lobes, P paracymbium.