Belisana zhouxi Wang, S. Li & Yao sp. nov.

Figs 18, 19, 23 E, F, 25 G, H

Type material.

Holotype: China • ♂; Guizhou, Kaili, Zhouxi Town, Hebian Cave; 26 ° 29.280 ' N, 107 ° 55.442 ' E; alt. 665 m; 25 May 2007; J. Liu & Y. Lin leg.; IZCAS - Ar 45226 . Paratypes: China • 2 ♀; same data as for holotype; IZCAS - Ar 45227 –28 .

Diagnosis.

The new species resembles B. majiang sp. nov. (Figs 6, 7, 22 E, F, 24 E, F) by having similar male chelicerae (tips of distal apophyses pointing downwards; Fig. 19 D), bulbal apophysis (hooked; Fig. 19 C), and epigyne (epigynal pockets on antero-lateral part of epigynal plate, epigynal plate posteriorly curved; Figs 19 A, 25 G), but can be distinguished by procursus without ventro-subdistal membranous process and dorso-distal spine (Figs 18 C, 23 E vs present) and by vulval pore plates elliptic (2 × longer than wide, pp in Figs 19 B, 25 H vs 3 ×).

Description.

Male (holotype): Total length 1.17 (1.27 with clypeus), prosoma 0.46 long, 0.50 wide, opisthosoma 0.71 long, 0.61 wide. Leg I: 6.72 (1.84, 0.21, 1.66, 2.13, 0.88), leg II: 4.56 (1.36, 0.19, 1.06, 1.36, 0.59), leg III: 3.29 (0.96, 0.19, 0.66, 1.01, 0.47), leg IV: 4.69 (1.44, 0.18, 1.16, 1.42, 0.49); tibia I L / d: 27. Eye interdistances and diameters: PME – PME 0.08, PME 0.06, PME – ALE 0.02. Sternum width / length: 0.41 / 0.33. Habitus as in Fig. 19 E, F. Dorsal shield of prosoma yellowish, without marks; clypeus and sternum yellowish. Legs whitish, without darker rings. Opisthosoma yellowish, without spots. Thoracic furrow absent. Clypeus unmodified. Chelicerae with pair of proximo-lateral apophyses (pa in Fig. 19 D) and pair of curved distal apophyses (distance between tips: 0.19; da in Fig. 19 D). Palp as in Fig. 18 A, B; trochanter with ventral apophysis (as long as wide, arrow 1 in Fig. 18 B); femur with retrolatero-proximal protrusion (arrow 2 in Fig. 18 B); procursus simple proximally but complex distally, with prolatero-distal membranous lamella (arrow 1 in Figs 18 C, 23 E) bearing proximally slightly sclerotized part, dorso-subdistal membranous process (arrow 2 in Figs 18 C, 23 E), and retrolateral membranous flap (f in Figs 18 D, 23 F); bulb with hooked apophysis (ba in Fig. 19 C) and simple embolus (e in Fig. 19 C). Retrolateral trichobothria on tibia I at 7 % proximally; legs with short vertical setae on metatarsi; tarsus I with 14 distinct pseudosegments.

Female (paratype, IZCAS - Ar 45227): Similar to male, habitus as in Fig. 19 G, H. Total length 1.21 (1.31 with clypeus), prosoma 0.49 long, 0.57 wide, opisthosoma 0.72 long, 0.63 wide; tibia I: 1.22; tibia I L / d: 22. Eye interdistances and diameters: PME – PME 0.07, PME 0.06, PME – ALE 0.01. Sternum width / length: 0.43 / 0.32. Epigyne simple and flat, posteriorly curved, with pair of antero-lateral pockets 0.16 apart (ep in Figs 19 A, 25 G). Vulva with ridge-shaped anterior arch (aa in Figs 19 B, 25 H) and pair of elliptic pore plates (2 × longer than wide, pp in Figs 19 B, 25 H).

Variation.

Unknown. Leg I missing in another female paratype (IZCAS - Ar 45228).

Habitat.

The species was found in the dark zone inside the cave.

Distribution.

China (Guizhou, type locality; Fig. 1).

Etymology.

The specific name refers to the type locality; noun in apposition.