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

作　　者：郭轩[1] 余志刚[1] 陈会明[1] 

机构地区：[1]贵州科学院生物研究所,贵阳550009

出　　处：《四川动物》2016年第3期395-399,共5页Sichuan Journal of Zoology

基　　金：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

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。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. ： 1 051 m,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（ Pages88 - 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. 1

关 键 词：弱蛛科 新种 洞穴 贵州 

分 类 号：Q959.226[生物学—动物学]