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Your Position :Home->Past Journals Catalog->2016 Vol.35 No.3

One New Spider Species of Genus Leptonetela (Araneae: Leptonetidae) from Cave in Guizhou, China
Author of the article:GUO Xuan, YU Zhigang, CHEN Huiming*
Author's Workplace:Institute of Biology, Guizhou Academy of Sciences, Guiyang 550009, China
Key Words:Leptonetidae; new species; cave; Guizhou
Abstract: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 ventroapically on the metatarsus of leg Ⅱ and Ⅲ.
Papal coxae 0.35 long, 0.16 wide. Palpal measurements (femur+patella+tibia+tarsus=total): 0.49+0.15+0.26+[JP]0.34=1.24; the length of tibia 1.76 times that of patella. Palpal tibia with 3 dorsally trichobothria (Plate Ⅱ: 6), 5 especial ventral spines in retrolateral, and several gracile spines in prolateral (Plate Ⅰ: 4, 6). Tarsus dwindle distally, with relatively shallow apical constriction of male palp (AC) in middle part, retrolateral tarsal apophysis (RA) in adjacent apical part in retrolateral; retrolateral side with row of short setae on RA and at base part of tarsus; a group long setae at apical part (Plate Ⅰ: 4, Plate Ⅱ: 6). Bulb suboval, without prolateral lobe (PL); M small, triangle-shaped (Plate Ⅱ: 5); proapical flange (PF) transparent, thin strip-shaped (Plate Ⅱ: 5, 6).
Abdomen creamy yellow, without markings, haired, 0.85 long, 0.68 wide.
Female paratype.
Total length 1.42. Carapace smooth, 0.56 long, 0.46 wide, height at fovea 0.74 times carapace width, yellowish; thoracic fovea brown, needle-shaped (Plate Ⅰ: 2). Clypeus yellowish. Chelicerae 0.34 long, yellowish, fang furrow with 6 teeth and 1 denticles on promargin and 6 denticles on retromargin; 8 short setae on base. Eyeless, only remain 6 eyespots on ocular area, 2 setae behind ocular area (Plate Ⅰ: 2). 2 setae behind ocular area. Sternum 0.45 long, 0.33 wide, haired; labium 0.06 long, 0.13 wide, yellowish.
Leg formula: Ⅰ-Ⅳ-Ⅱ-Ⅲ. Leg measurements (femur+patella+tibia+metatarsus+tarsus=total): Ⅰ: 1.71+0.25+1.85+1.38+0.96=6.15; Ⅱ: 1.42+0.25+1.42+0.99+0.36=4.44; Ⅲ: 1.29+0.27+1.21+0.96+0.71=4.44; Ⅳ: 1.62+0.21+1.57+1.31+0.84=5.55. Leg yellowish, preening comb occurs ventroapically on the metatarsus of leg Ⅱ and Ⅲ.
Papal coxae 0.29 long, 0.13 wide. Palpal measurements (femur+patella+tibia+tarsus=total): 0.45+0.15+0.35+[JP]0.44=1.39.
Abdomen creamy yellow, without markings, haired, 0.82 long, 0.68 wide. Epigynal plate broadly triangular, simple (Plate Ⅰ: 2); internal genitalia with a pair of spermatheca, coil sperm duct, pair triangle-shaped atrium (Plate Ⅱ: 7).
Distribution: The species is known only from the type locality.
2016,(35): 395-399 收稿日期:2015-09-09
DOI:10.11984/j.issn.1000-7083.20150274
分类号:Q959.226
基金项目:贵州省社发攻关项目;贵州科学院人才团队经费项目;贵州科学院人才引进经费项目
作者简介:郭轩(1963-),男,学士,主要从事动物学研究
*通讯作者:陈会明,E-mail:mei0601@126.com
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