贵州微蟹蛛属一新种及裸微蟹蛛的雄性新发现(蜘蛛目:蟹蛛科)

A New Species of the Genus Lysiteles,with the First Male Description of L.nudus from Guizhou,China(Araneae:Thomisidae)

记述了产自中国贵州的微蟹蛛属Lysiteles一新种:梵净微蟹蛛L.fanjingensis sp.nov.及首次记述了裸微蟹蛛L.nudus Yu&Zhang,2017的雄性。提供了它们的外形及外生殖器显微照片和点线覆墨图。标本保存于铜仁学院标本馆。

A new Lysiteles species,L.fanjingensis sp.nov.(♂♀),and the unknown male of L.nudus Yu&Zhang,2017 from Guizhou Province of China are described.Color photographs and plot drawings of diagnostic characters are provided.All specimens are deposited in the Museum of Tongren University,Guizhou Province,China.Lysiteles fanjingensis sp.nov.(PlatesⅠ,Ⅱ,Ⅴ:C-F)Type material:holotype♂,Huguosi,Fanjing Mountain National Nature Reserve(108.669436°E,27.914813°N,1994 m),Guizhou Province,14 June 2019,Cheng Wang&Jiahui Gan leg.Paratypes 1♂3♀,same date as holotype.Etymology:the species name is derived from the name of type locality;adjective.Diagnosis:the new species resembles those of L.saltus Ono,1979(see Ono,2001:220,figs.36-43)in male palp having 2 tibial apophyses(the retrolateral one obviously longer than the ventral one),short embolus less than 1/3 cymbial width,and in female epigyne having foliiform atrial membrane anterior-medially,but differs in:(1)retrolateral tibial apophysis slightly curved medially in ventral view versus straight in L.saltus;(2)ventral tibial apophysis longer and terminally curved towards inner side in ventral view versus straight in L.saltus;(3)embolus curved medially and its tip directed towards 02∶30 o clock in ventral view versus straight and its tip directed towards 04∶00 o clock in L.saltus;(4)atrial membrane of epigyne wider than length versus almost equal to the length in L.saltus;(5)copulatory ducts short,the diameter larger than its length versus less than the length obviously in L.saltus.Genitalia:Male palptibia wider than length,with 2 apophyses,ventral apophysis stout,curved terminally,retrolateral apophysis heavily sclerotized,thumb-shaped and distally blunt;cymbium flat;bulb almost round,with sperm duct extending along the margin;embolus sclerotized,originating at 11∶00 o clock position of bulb,slightly curved medially and with pointed tip directed towards 02∶30 o clock in ventral view.Epigyne with a transparent and foliiform atrial membrane wider than length,located anterior-medially;copulatory openings indistinct,located at the anterior part of the atria,covered by the lateral side of the atrial membrane;copulatory ducts short,its diameter larger than length;spermathecae spherical,the distance between them about 1/3 their diameter.Lysiteles nudus Yu&Zhang,2017(PlatesⅢ,Ⅳ,Ⅴ:A-B)L.nudus Yu&Zhang,2017:73,figs.4-6(Df).Material examined:2♂3♀,Xiangshuiyan,Leigong Mountain National Nature Reserve(108.159833°E,26.362245°N,1204 m),Guizhou Province,1 May 2018,Guijie Tian and Hong Liu leg.Diagnosis:Female diagnosed by Yu&Zhang(2017).The male resembles those of L.niger Ono,1979(see Tang et al.,2008:26,figs.13a-k)in palp having flat embolus,2 tibial apophyses(the retrolateral one slightly longer than the ventral one),but differs in:(1)ventral tibial apophysis widest at base in ventral view versus widest at terminal in L.niger;(2)embolus slightly curved terminally in ventral view versus straight in L.niger;(3)ventral tibial apophysis wider than retrolateral tibial apophysis in retrolateral view versus narrower than retrolateral tibial apophysis in L.niger.Genitalia:Female well described by Yu&Zhang(2017);male palp tibia wider than length,with 2 apophyses,ventral apophysis digitiform,retrolateral apophysis heavily sclerotized,distally folded;cymbium flat,widest medially;bulb almost round,with sperm duct extending along the margin;embolus flat,originating from the anterior edge of the bulb,widest at base,slightly curved terminally.