Belisana lincang Zhang, Li & Yao sp. nov.

Figs 6, 7, 18 E, F, 20 E, F

Type material.

Holotype ♂ (IZCAS - Ar 44962) and paratype 1 ♀ (IZCAS - Ar 44963), Bianfu Cave (24 ° 19.862 ' N, 100 ° 14.001 ' E, 1619 m), Yankou Village, Laoxu Town, Yun County, Lincang, Yunnan, China, 05 / 08 / 2010, C Wang, Q Zhao & L Lin leg.

Etymology.

The specific name refers to the type locality, which is a noun in apposition.

Diagnosis.

The new species resembles B. phungae Yao, Pham & Li, 2015 (Yao et al. 2015: 9, figs 19 A – D, 20 A – G, 21 A – E) by having similar male chelicerae, bulbal apophyses, and epigyne (Figs 7 A, C, D, 20 E), but can be distinguished by differences in males: procursus with dorso-distal membranous lamella (arrow 3 in Figs 6 C, 18 E vs absent), distally pointed ventro-subdistal membranous lamella (arrow 4 in Figs 6 C, 18 E vs nearly half-round) and without dorso-subdistal sclerite (Figs 6 C, 18 E vs present); differences in females: epigynal pockets closer to each other (Figs 7 A, B, 20 E, F vs widely separated), pore plates curved and narrow (Figs 7 B, 20 F vs nearly round).

Description.

Male (holotype): Total length 1.78 (1.90 with clypeus), carapace 0.85 long, 0.88 wide, opisthosoma 0.93 long, 0.85 wide. Leg I missing, leg II: 6.69 (1.78, 0.31, 1.62, 2.18, 0.80), leg III: 5.18 (1.42, 0.26, 1.19, 1.68, 0.63), leg IV: 6.70 (1.90, 0.28, 1.70, 2.13, 0.69). Eye inter-distances and diameters: PME – PME 0.08, PME 0.09, PME – ALE 0.03, AME absent. Sternum width / length: 0.61 / 0.56. Habitus as in Fig. 7 E, F. Carapace yellowish, with brown median band; sternum yellowish. Legs whitish, without darker rings. Opisthosoma yellowish, without spots. Thoracic furrow absent. Clypeus unmodified. Chelicerae (Fig. 7 D) with a pair of proximo-lateral apophyses and a pair of curved distal apophyses (distance between tips: 0.15). Palp as in Fig. 6 A, B; trochanter with ventral apophysis (2 × longer than wide, arrow 1 in Fig. 6 B); femur with tiny retrolatero-proximal protrusion (arrow 2 in Fig. 6 B); procursus simple proximally but complex distally, with prolatero-distal membranous process (arrow 1 in Figs 6 C, 18 E) bearing narrow lateral sclerite, sclerotized prolatero-distal apophysis (arrow 2 in Figs 6 C, 18 E), dorso-distal membranous lamella (arrow 3 in Figs 6 C, 18 E), and ventro-subdistal membranous lamella (arrow 4 in Figs 6 C, 18 E); bulb (Fig. 7 C) with distally angular apophysis and simple embolus.

Female (paratype, IZCAS - Ar 44963): Similar to male, habitus as in Fig. 7 G, H. Total length 2.48 (2.62 with clypeus), carapace 0.86 long, 0.86 wide, opisthosoma 1.62 long, 1.31 wide. Leg I: 9.08 (2.33, 0.33, 2.30, 2.97, 1.15); tibia I L / d: 26. Eye inter-distances and diameters: PME – PME 0.09, PME 0.08, PME – ALE 0.02, AME absent. Sternum approximately as wide as long (0.60). Epigyne (Figs 7 A, 20 E) simple and flat, with dark internal shade and a pair of postero-median pockets 0.05 apart. Vulva (Figs 7 B, 20 F) with sac-like structure (arrow in Figs 7 B, 20 F), sclerotized anterior arch, and a pair of curved, long elliptic pore plates (5 × longer than wide). Retrolateral trichobothria on tibia I at 9 % proximally; legs with short vertical setae on metatarsi; tarsus I with 20 distinct pseudosegments.

Habitat.

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

Distribution.

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