贵州洞穴小弱蛛属一新种记述(蜘蛛目:弱蛛科)
One New Spider Species of Genus Leptonetela (Araneae: Leptonetidae) from Cave in Guizhou, China

中文摘要：记述采自贵州省施秉县一洞穴小弱蛛属 Leptonetela一新种,施秉小弱蛛 Leptonetela shibingensis sp. nov.。该新种近似于查氏小弱蛛 Leptonetela zhai Wang & Li,2011,主要区别有:眼退化,仅留眼丘,后者6眼完全;雄蛛触肢器中突(median apophysis,M)小,三角形,而后者中突大,近掌状;雄蛛触肢器胫节基刺(basal spine of male palpal tibia,TBS)短而粗,末端向内弯曲。模式标本保存于贵州科学院生物研究所。
英文摘要：A new species, Leptonetela shibingensis sp. nov., collected from Chuandong cave, Shibing county, Guizhou province, China was described, photographed and illustrated. Type specimen is deposited in the Institute of Biology, Guizhou Academy of Sciences, Guiyang, China. All measurements are given in mm. Leptonetela shibingensis sp. nov. (Plates Ⅰ, Ⅱ) Type material. Holotype: ♂, Chuandong cave, Shijiawang village, Baiduo town, Shibing county, Guizhou province, China, 27°10.544'N, 108°11.802'E, Alt.: 671 m, November 3, 2012, collected by H. M. Chen and X. Guo. Paratype: 4 ♂♂ and 3 ♀♀, same data as holotype; 4 ♂♂ and 10 ♀♀, Aotian cave, Shijiawang village, Baiduo town, Shibing county, Guizhou province, China, 27°10.189'N, 108°11.697'E, Alt.: 1 097 m, November 4, 2012, collected by H. M. Chen and X. Guo; 1 ♂ and 5 ♀♀, Tangkan cave, Labatong, Niudachang town, Shibing county, Guizhou province, China, 27°12.495'N, 108°01.884'E, Alt.: 1 051m, July 19, 2012, collected by H. M. Chen and X. Guo. Etymology: The specific name refers to the type locality; adjective. Diagnosis: Distinguished from relatives by a small cone on the tip of embolus, the basal spines of male palpal tibia (TBS) abruptly narrowed in the distal part and bend end. This new species is similar to L. zhai Wang & Li, 2011 (Pages 88~90, Figs 69~71), but can be distinguished by no eyes (Plate Ⅰ: 1, 2), the triangle-shaped and small median apophysis (M, Plate Ⅱ: 5), the short and thick TBS bend entad on the end (Plate Ⅰ: 4, Plate Ⅱ: 6). Description: Male holotype. Total length 1.65. Carapace smooth, 0.68 long, 0.56 wide, height at fovea 0.84 times carapace width, yellowish; thoracic fovea brown, needle-shaped (Plate Ⅰ: 1). Clypeus yellowish. Chelicerae 0.37 long, yellowish, with 8 promarginal teeth and 6 retromarginal denticles; 8 short setae on base. Eyeless, only remain four eyespots on ocular area, two setae behind ocular area (Plate Ⅰ: 1). Sternum 0.46 long, 0.43 wide, haired; labium 0.08 long, 0.12 wide, yellowish. Leg formula: Ⅰ-Ⅳ-Ⅱ-Ⅲ. Leg measurements (femur+patella+tibia+metatarsus+tarsus=total): Ⅰ: 1.74+0.24+1.86+1.48+0.96=6.28; Ⅱ: 1.50+0.23+1.52+1.19+0.80=5.24; Ⅲ: 1.30+0.23+1.24+1.04+0.66=4.47; Ⅳ: 1.61+0.22+1.59+1.34+0.85=5.61. Leg yellowish, tibia Ⅰ and Ⅱ with rows of fine hairs on ventral surface; preening comb occurs