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贵州贝尔蛛属一新种记述(蜘蛛目:幽灵蛛科)
One New Spider Species of Genus Belisana (Araneae: Pholcidae) from Guizhou, China
陈会明, 余志刚, 郭轩*
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DOI:
作者单位:贵州科学院生物研究所, 贵阳 550009
中文关键字:幽灵蛛科;新种;贵州
英文关键字:Pholcidae; new species; Guizhou
中文摘要:记述采自贵州省施秉县贝尔蛛属Belisana一新种,李氏贝尔蛛Belisana lii sp. nov.。该新种近似于沿河贝尔蛛Belisana yanhe Chen et al.,2009,主要区别有:本种跗前突末端为3层膜片叠加,且顶部形成具2个小的椎形结构,而后者仅有2层膜片叠加,顶部只形成1个三角形结构;雄蛛螯肢末突长而末端强烈向后弯曲,雄蛛螯肢下侧突向内弯曲等特征区分。模式标本保存于贵州科学院生物研究所。
英文摘要:A new species, Belisana lii sp. nov., collected from Shibing county, Guizhou province, was described, photographed and illustrated. Type specimens are deposited in the Institute of Biology, Guizhou Academy of Sciences, Guiyang, China. All measurements are given in mm.
Belisana lii sp. nov. (Plate Ⅰ: 1~4; Plate Ⅱ: 5~9)
Type material. Holotype: ♂, Tankan cave, Labatong, Niudachang town, Shibing county, Guizhou province, China, 27°12.495'N, 108°01.884'E, Alt.: 1 051 m, 19 July 2012, collected by H.M. Chen and X. Guo. Paratype: 1♂ and 3 ♀♀, same data as holotype.
Etymology: The specific name a patronym in honor of the Pro. Zhumei Li; noun in genitive case.
Diagnosis: Distinguished from those relatives by the shapes of procursus (Plate Ⅰ: 3~4; Plate Ⅱ: 5~6), bulbul projections (Plate Ⅰ: 3, Plate Ⅱ: 5) on the male, and the female genitalia (external aspect and internal structures, Plate Ⅱ: 8). The new species is similar to B. yanhe Chen et al., 2009 by the tile-shape embolus and membranous end part of procursus. Distinguished from B. yanhe by 3 layered membranes at the end (Plate Ⅱ: 5), and 2 subuliform formations on the tip of procursus (Plate Ⅱ: 6), while in B. yanhe, only 2 layered membranes and 1 triangular formation; the distal apophysis on male chelicerae (DA) bend entad at the end (Plate Ⅱ: 9) and the proximolateral apophysis on male chelicerae (PLA) bend forth at the end (Plate Ⅱ: 9), the DA bend forth at the end and PLA without bend in B. yanhe.
Description: Male holotype. Total length 1.22 (1.32 with clypeus), carapace width 0.36. Leg Ⅰ: 7.45 (2.20+0.15+2.34+2.43+0.33), tibia Ⅱ: 1.52, tibia Ⅲ: 1.70, tibia Ⅳ: 1.36; tibia Ⅰ L/d: 67. Habitus as in Plate Ⅰ: 1. Carapace cream-colored, with dark lateral marks down the carapace. Thoracic furrow absent (Plate Ⅰ: 1). Sternum yellowish, legs yellowish, without darker rings on coxa. Opisthosoma milk-white, with darker spots (Plate Ⅰ: 1), without sparse hairs. Ocular area not elevated, six eyes in two triads, distance PME-PME 0.07; diameter PME 0.05; distance PME-ALE 0.01. Clypeus modified. Sternum 0.29 long, 0.30 wide. Chelicerae as in Fig. 9, with pair of curved apophyses, tips modified, 0.33 apart. Palps as in Plate Ⅰ: 3~4; Plate Ⅱ: 5~6; trochanter with retrolateral apophysis, procursus without spine (Plate Ⅰ: 3~4; Plate Ⅱ: 5~6) and with ventral membranous flap (broad), bulb with hooked apophysis (Plate Ⅰ: 3, Plate Ⅱ: 5). Retrolateral trichobothrium of tibia Ⅰ lost maybe; legs without spines and curved hairs; tarsus Ⅰ with approximately 24 pseudosegments.
Female paratype. In general similar to male. Epigynum simple externally (Plate Ⅱ: 7), dorsal view as in Plate Ⅱ: 8. Opisthosoma milk-white, with some slightly darker spots visible through cuticle dorso-laterally.
2016,(35): 227-230 收稿日期:2015-09-09
DOI:10.11984/j.issn.1000-7083.20150275
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:陈会明(1971-), 男, 博士, 副研究员, 主要从事动物学研究
*通讯作者:郭轩, E-mail:mei0601@126.com
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