Material examined. Holotype ♂ (IZCAS), China, Guangxi Zhuang Autonomous Region, Hechi City, Du’an County, Xia’ao Town, Longyan Cave, 15.III.2015 (24º4.402′N, 108º3.257′E), elev. 173 m, leg. Z. Chen & Y. Li. Paratypes 2♂ 3♀ (IZCAS), same data as holotype.

Etymology. The specific name is derived from the type locality; noun.

Diagnosis. The new species is similar to S. bachma Li & Li sp. nov., but males can be distinguished by the laterally strongly curved chelicerae (Fig. 56G) and the asymmetrical male palpal bulb (Figs 31A–B), and females by the tubular spermathecae (Fig. 32A). S. bachma males have unmodified chelicerae (Fig. 55C), a symmetrical male palpal bulb (Figs 5A–B), and females have oval spermathecae (Fig. 6A).

Description. Male. Total length 1.05; carapace length 0.51; carapace width 0.41; abdomen length 0.62; abdomen width 0.42. Prosoma: carapace pyriform, narrowing gradually anteriorly; shiny, light yellow, suffused with purplish pattern (Fig. 32A); pars cephalica flat; fovea not visible. Sternum light yellow, suffused with purplish color, longer than wide. Endites light yellow suffused with purplish tinge; with serrula; labium light yellow suffused with purplish tinge. Clypeus nearly vertical; short. Chelicerae light yellow, lateral margin strongly curved; promargin with a series of six teeth reaching the lamina; retromargin with two small denticles (Fig. 56G). Eyes: six contiguous eyes surrounded by black pigmentation; PME smallest, ALE largest (Fig. 32C). Opisthosoma oval; purplish. Legs light yellow; leg formula 4123; leg lengths I 1.97 (0.56, 0.18, 0.56, 0.38, 0.29); II 1.80 (0.51, 0.16, 0.51, 0.35, 0.28); III 1.60 (0.45. 0.14, 0.41, 0.34, 0.26); IV 2.18 (0.63, 0.16, 0.61, 0.45, 0.33). Genitalia (Fig. 31). Palpal femur long; palpal tibia as long as cymbium (Figs 31A–B). Cymbium conical, without prolateral extension. Bulb asymmetrical, elliptical, with a small apophysis distally. Embolus short, butterfly-like and without distinct associated sclerites; sperm duct initially wide, gradually narrowing distally (Fig. 31D).

Female. Total length 1.14; carapace length 0.52; carapace width 0.43; abdomen length 0.62; abdomen width 0.49. Similar to male in color and general features (Figs 32D–E) but larger. Chelicerae unmodified. Leg formula 4123; leg lengths I 1.99 (0.58, 0.16, 0.58, 0.38, 0.29); II 1.82 (0.52, 0.16, 0.50, 0.34, 0.29); III 1.70 (0.47. 0.16, 0.45, 0.36, 0.27); IV 2.18 (0.61, 0.16, 0.64, 0.46, 0.33). Genitalia. Internal genitalia with afferent spermathecae short, strongly curved posteriorly from the epigastric furrow, not extending past the sides of the abdomen (Fig. 32B); spermathecae tubular shaped (Fig. 32A).

Distribution. Known only from the type locality.