Belisana majiang Wang, S. Li & Yao 2024, sp. nov.

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.