中国奥塔蛛属1新种记述 (蜘蛛目:圆颚蛛科)*
2013-01-14杜树军普海波杨自忠
杜树军,普海波,杨自忠*
(1.昌宁县耇街民族中学,云南 昌宁678113;2.云南省药用昆虫及蛛形类资源开发利用工程实验室,云南 大理 671000)
奥塔蛛属自1897年被Thorell建属以来全球已记述29种,而我国目前记述12种 (Hu&Zhang,2011;J·ger& Wunderlich,2012;Kamura,2008;Zhang,Fu& Zhu,2009;Fu,Zhang&Zhu,2010;Platnick,2012),占了全球该属物种的41.37%,这也反映了我国蜘蛛物种多样性在世界上的重要性。
笔者在鉴定采自澜沧江流域昌宁段的蜘蛛标本时发现1种奥塔蛛属Otacilia蜘蛛,经过仔细比较研究,这种奥塔蛛为新种,定名为:大祥奥塔蛛,新种Otacilia daxiang sp.nov.。
大祥奥塔蛛,新种Otacilia daxiang sp.nov.
正模♂,云南省保山市昌宁县漭水镇东后山,1833m,2011年10月2日,杨自忠采;副模:1♂,云南省保山市昌宁县漭水镇东后山,1833m,2011年10月2日,杜树军、普海波采。
词源学:本新种种名根据我国著名的动物分类学家宋大祥的名而拟定。
鉴别特征:本新种与杨氏奥塔蛛Otacilia yangi Zhang&Fu,2009相似,但具以下区别:背甲中部无纵带纹 (图1),后者中部具1条黑色纵带纹;步足第I腿节具5前侧刺,后者4枚 (图2);插入器细而长,后者短而宽 (图8)。
正模♂,体长4.39,头胸部长2.10,宽1.77;腹部长2.34,宽1.30。背甲长卵圆形,深褐色。背甲中部靠近中窝处高高隆起,在步足基节的II和III之间处最宽。颈沟和放射沟明显。中窝短,长条形。眼2列,4-4排列。眼径:前中眼0.11,前侧眼0.12,后中眼0.12,后侧眼0.13。眼间距:前中眼间距0.07,前中、侧眼间距0.02,前、后侧眼间距0.11,后中、侧眼间距 0.09,后中眼间距 0.19。中眼域长 0.33,前边宽 0.27,后边宽0.42。螯肢浅褐色,前面近螯肢基部的部位分别有2根刺,1短1长。螯肢前齿堤具2大齿,后齿堤5小齿。颚叶浅褐色,长大于宽。胸板心形,浅褐色。步足测量:I 7.04(1.54+2.69+1.71+1.10);II 6.70(1.79+2.50+1.44+0.97);III 5.46(1.49+1.72+1.40+0.85);IV 8.47(2.40+2.62+2.27+1.18)。足式:4123。步足为浅褐色,腿节和胫节近端部处没有褐色环纹。腿节I具1背刺,5前侧刺;胫节I具8对腹刺;后跗节具8对腹刺 (图2)。腿节II具1背刺,2前侧刺 (图3);胫节具7对腹刺;后跗节具4对腹刺。腿节III和IV各具1背刺,没有前侧刺;后跗节III端部具毛刷。触肢器褐色,胫节外侧突分叉,基部的小,齿状,靠近背部的基部宽大、端部犬齿状 (图5,7);腿节具1驼峰状隆起 (图4-5);插入器侧扁而弯曲,似镰刀状 (图6,8)。腹部长卵圆形,背面浅褐色,自中部至肛丘前方具有5个近倒“V”字形黑色斑纹;腹面浅褐色,生殖沟后部腹面两侧各具1深褐色纵条纹。纺器6个,浅黄色。
Fu J Y,Zhang F,Zhu M S.Three new species of the genus Otacilia(Araneae:Corinnidae)from Hainan Island,China [J].J.nat.Hist.2010.44:639 -650.
Hu D S ,Zhang F.Description of a new Otacilia species from China,with transfer of two species from the genus Phrurolithus(Araneae:Corinnidae) [J].Zootaxa,2011,2993:59-68.
Jäger P ,Wunderlich J.Seven new species of the spider genus Otacilia Thorell 1897(Araneae:Corinnidae)from China,Laos and Thailand [J].Beitr.Araneol.2012,7:251 -271.
Kamura T.A new species of the genus Otacilia(Araneae:Corinnidae)from Japan [J].Acta arachn.Tokyo,2008,57:41 -42.
Platnick N I.The world spider catalog,version 13.0.American Museum of Natural History,[EB/OL]:
http://research.amnh.org/entomology/spiders/catalog/index.html(accessed 25 June 2012)
Zhang F,Fu J Y ,Zhu M S.A new species of the genus Otacilia(Araneae:Corinnidae)from Yunnan Province,China.Acta arachn.Tokyo,2009,58:1-3.
Otacilia daxiang sp.nov.
Male(holotype),Donghou hill,Mangshui Town,Changning County,Yunnan Province,1833m,02 Oct.2011,leg.by Zi- Zhong Yang;paratypes:one male,data the same as for holotype,leg.by Shu-Jun Du,Hai-Bo Pu.
Etymology:The specific name is in memory of Da - Xiang Song,the famous zoologist in China.
Diagnosis:This new species similar with Otacilia yangi Zhang& Fu,2009,but can be distinguished by the following characters:the black longitudinal striate pattern absent,the later present(fig.1);leg femora I with five prolateral spines,the later with four(fig.2);embolus thin and long,but the later short and wide(fig.8) .
图1—8 大祥奥塔蛛,新种Otacilia daxiang sp.nov.