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

Figs 6, 7, 22 E, F, 24 E, F

Type material.

Holotype: China • ♂; Guizhou, Kaili, Majiang County, Xingshan Town, Gubin Village, Guazhutou Cave; 26 ° 30.257 ' N, 107 ° 30.943 ' E; alt. 1056 m; 28 Nov. 2011; Z. Chen & Z. Zha leg.; IZCAS - Ar 45194 . Paratypes: China • 1 ♂; same data as for holotype; IZCAS - Ar 45195 • 2 ♀; same data as for holotype; IZCAS - Ar 45196 –97 .

Diagnosis.

The new species resembles B. zhouxi sp. nov. (Figs 18, 19, 23 E, F, 25 G, H) by having similar male chelicerae (tips of distal apophyses pointing downwards; Fig. 7 D), bulbal apophysis (hooked; Fig. 7 C), and epigyne (epigynal pockets on antero-lateral part of epigynal plate, epigynal plate posteriorly curved; Figs 7 A, 24 E), but can be distinguished by procursus with distinct ventro-subdistal membranous process and dorso-distal spine (arrows 1, 3 in Figs 6 C, 22 E vs absent) and by vulval pore plates long elliptic (3 × longer than wide, pp in Figs 7 B, 24 F vs 2 ×); also distinguished from B. tongle Zhang, Chen & Zhu, 2008 (Zhang et al. 2008: 654, figs 1–5) by procursus with dorso-subdistal membranous process (arrow 4 in Figs 6 C, 22 E vs absent), by prolatero-distal membranous lamella of procursus without rectangular sclerite (arrow 2 in Figs 6 C, 22 E vs present), by ventro-subdistal membranous process of procursus 3 × longer than wide (arrow 1 in Figs 6 C, 22 E vs 8 ×), and by dorso-distal spine of procursus 6 × longer than wide (arrow 3 in Figs 6 C, 22 E vs 12 ×).

Description.

Male (holotype): Total length 1.35 (1.43 with clypeus), prosoma 0.52 long, 0.59 wide, opisthosoma 0.83 long, 0.64 wide. Leg I missing, leg II: 6.13 (1.78, 0.22, 1.50, 1.90, 0.73), leg III: 4.19 (1.28, 0.20, 0.95, 1.33, 0.43), leg IV: 5.87 (1.72, 0.22, 1.48, 1.80, 0.65). Eye interdistances and diameters: PME – PME 0.08, PME 0.06, PME – ALE 0.02. Sternum width / length: 0.44 / 0.38. Habitus as in Fig. 7 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. 7 D) and pair of curved distal apophyses (distance between tips: 0.19; da in Fig. 7 D). Palp as in Fig. 6 A, B; trochanter with ventral apophysis (1.5 × longer than wide, arrow 1 in Fig. 6 B); femur with retrolatero-proximal protrusion (arrow 2 in Fig. 6 B); procursus simple proximally but complex distally, with ventro-subdistal membranous process (arrow 1 in Figs 6 C, 22 E), prolatero-distal membranous lamella (arrow 2 in Figs 6 C, 22 E) bearing proximally slightly sclerotized part, dorso-distal spine (arrow 3 in Figs 6 C, 22 E), dorso-subdistal membranous process (arrow 4 in Figs 6 C, 22 E), and retrolateral membranous flap (f in Figs 6 D, 22 F); bulb with hooked apophysis (ba in Fig. 7 C) and simple embolus (e in Fig. 7 C).

Female (paratype, IZCAS - Ar 45196): Similar to male, habitus as in Fig. 7 G, H. Total length 1.48 (1.58 with clypeus), prosoma 0.48 long, 0.56 wide, opisthosoma 1.00 long, 0.84 wide. Eye interdistances and diameters: PME – PME 0.08, PME 0.06, PME – ALE 0.02. Sternum width / length: 0.43 / 0.39. Epigyne simple and flat, posteriorly curved, with pair of antero-lateral pockets 0.14 apart (ep in Figs 7 A, 24 E). Vulva with ridge-shaped anterior arch (aa in Figs 7 B, 24 F) and pair of long elliptic pore plates (3 × longer than wide, pp in Figs 7 B, 24 F).

Variation.

Unknown. Legs I missing in male paratype (IZCAS - Ar 45195) and another female paratype (IZCAS - Ar 45197).

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.