Belisana lingui Zhang, Li & Yao 2024, sp. nov.

Belisana lingui Zhang, Li & Yao sp. nov. Figs 4, 5, 8 C, D, 9 C, D Type material. Holotype: China • ♂; Guangxi, Guilin, Lingui County, Yanmendi Village, Shuixianyan Cave; 25 ° 12.819 ' N, 110 ° 12.050 ' E; alt. 161 m; 18 Jul. 2009; Z Yao leg.; IZCAS - Ar 44993. Paratypes: China • 3 ♀; same data as for holotype; IZCAS - Ar 44994 –96. Etymology. The specific name refers to the type locality; noun in apposition. Diagnosis. The new species resembles B. galeiformis Zhang & Peng, 2011 (Zhang and Peng 2011: 52, fig. 1 A – F) by having similar bulbal apophyses and male chelicerae (Fig. 5 C, D), but can be distinguished by procursus without prolatero-subdistal sclerite (Figs 4 C, 8 C vs. present in B. galeiformis), by epigyne with posterior pockets (ep in Figs 5 A, 9 C vs. median in B. galeiformis), by pore plates anteriorly narrow and posteriorly wide (pp in Figs 5 B, 9 D vs. elliptic in B. galeiformis), and by dorsal shield of prosoma without marks (Fig. 5 E, G vs. with radiating marks in B. galeiformis); also distinguished from B. tongle Zhang, Chen & Zhu, 2008 (Zhang et al. 2008: 654, figs 1–5) by procursus without prolatero-subdistal sclerite and ventro-subdistal apophysis (Figs 4 C, 8 C vs. present in B. tongle). Description. Male (holotype): Total length 1.51 (1.59 with clypeus), prosoma 0.56 long, 0.59 wide, opisthosoma 0.95 long, 0.84 wide. Leg I: 20.66 (5.26, 0.33, 5.19, 7.98, 1.90), leg II: 14.16 (3.88, 0.33, 3.64, 5.00, 1.31), leg III: – (2.53, 0.30, 2.25, 3.00, –), leg IV: 11.97 (3.60, 0.30, 3.23, 3.76, 1.08); tibia I L / d: 80. Eye interdistances and diameters: PME – PME 0.12, PME 0.05, PME – ALE 0.02, AME absent. Sternum width / length: 0.49 / 0.44. Habitus as in Fig. 5 E, F. Dorsal shield of prosoma and sternum yellowish, without marks. Legs whitish, without darker rings. Opisthosoma yellowish, without spots. Thoracic furrow absent. Clypeus unmodified. Eyes without pigments, but apparently with small lenses. Chelicerae with pair of proximo-lateral apophyses (pa in Fig. 5 D) and pair of distal apophyses (da in Fig. 5 D; distance between tips: 0.22). Palp as in Fig. 4 A, B; trochanter with ventral apophysis (arrow 1 in Fig. 4 B); femur with small retrolatero-proximal protrusion (arrow 2 in Fig. 4 B); procursus simple proximally but complex distally, with ventro-subdistal membranous lamella (arrow 1 in Figs 4 C, 8 C), spine-shaped distal apophysis (tip broken; arrow 2 in Figs 4 C, 8 C), retrolatero-subdistal membranous lamella (arrow in Figs 4 D, 8 D), and retrolateral membranous flap (f in Figs 4 D, 8 D); bulb with hooked apophysis (ba in Fig. 5 C) and simple embolus (e in Fig. 5 C). Retrolateral trichobothria on tibia I at 4 % proximally; legs with short vertical setae on metatarsi; tarsus I with 17 distinct pseudosegments. Female (paratype, IZCAS - Ar 44994): Similar to male, habitus as in Fig. 5 G, H. Total length 2.00 (2.09 with clypeus), prosoma 0.58 long, 0.63 wide, opisthosoma 1.42 long, 1.01 wide; tibia I: 2.34; tibia I L / d: 39. Eye interdistances and diameters: PME – PME 0.11, PME 0.04, PME – ALE 0.02, AME absent. Sternum width / length: 0.50 / 0.44. Epigyne simple and flat, with pair of posterior pockets 0.20 apart (ep in Figs 5 A, 9 C). Vulva with ridge-shaped anterior arch (aa in Figs 5 B, 9 D) and pair of anteriorly narrow and posteriorly wide pore plates (pp in Figs 5 B, 9 D). Variation. Tibia I in the other two female paratypes (IZCAS - Ar 44995 –96): 2.34, 2.41. Habitat. The species was found in the dark zone inside the cave. Distribution. China (Guangxi, type locality; Fig. 1).