我国辽宁林区四个球蛛新种记述(蜘蛛目:球蛛科)

Notes on the Four New Species of Comb-footed Spiders of the Forest Regions Liaoning,China (Araneae:Theridiidae)

本文记述了辽宁林区四个球蛛新种,种名为:双孔球蛛 Theridion bifora-minum Gao et Zhu,sp.nov.,桓仁球蛛 Theridion huanrenensis Zhu et Gao,sp.nov.,新月球蛛 Theridion lunulatum Guan-et Zhu,sp.nov.,蛇突球蛛Theridion serpatusum Guan et Zhu,sp.nov..模式标本保存在河北教育学院.

This paper deals with four new species of comhfooted spiders from forest regions Liaoning,China.They are:Theridion biforaminum sp.nov.,T.h(?) mensis sp.nov.,T.(?)latum sp.nov.,and T.serpatusum sp.nov.Measurements are in mm. The type specimens are presevved in Hebei Educational College. Theridion biforaminum Gao et Zhu,sp.nov.(Figs.1-4) Holotype ♀,Qingyuan County(24°6′N,124″54′E),Liaoning,June,1988. Total length of female 4.3.Cephalothorax 1.3 long,1.3 wide;abdomen 3.3 long, 3.0 wide. This new species is allied to Theridion montanum Emerton(Levi,1957:71～74, figs.251～256),but differs from the latter in the connecting ducts short and thick. and also in the different pattern of abdominal dorsum. Male:unknown. Theridion huanrenensis Zhu et Gao,sp.nov.(figs.5-10) Holotype ♀,dllotype (?),paratypes 3 ♀♀ and 2(?),Huanren County (41°12′N, 125°18′E),Liaoning,June,1988;paratypes 5♀♀ and 2(?),Kuandian County (40°42′N,124°42′E),Liaoning.June 8,1987. Total length of female 3.93.Cephalothorax 1.25 long,1.06 wide;abdomen 2.9 long,2.8 wide. This new species resembles Theridiom quadrimaculatum Song et Kim(Song et Kim, 1991:19-27,figs.4-6.),but differs from the latter in the distal part of embolus wider and larger median apophysis.Besides their epigynai shape are also different. Theridion lunulatum Guan et Zhu,sp.nov.(Figs.11-13) Holotype (?),Huanren County,Liaoning,June 1989. Total length of male 1.84.Cephalothorax 0.29 long,0.76 wide:abdomen 0.96 long,0.73 wide. The palpus of this new species is allied to that of Theridion dodoaenm Brignoli (Brignoli,1984:297～298,figs.23～24),hut differs from the latter in:1)conductor is broader and larger,2)median apophysis like the shape of a crescent,3)embolus is very long. Female:unknown. Theridion serpatusum Guan et Zhu,sp.nov.(figs.14～17) Holotype (?).Qingyuan County,Liaoning,May,1986. Total length of male 2.81.Cephalothorax 1.16 long,1.06 wide:abdomen 1.65 long.1.22 wide. This species was first recorded as Theridion sp. ign.by Palmgren(1974)in Finnland,and with good illustrations.This species is different from other species of the genus Theridion its conductor at the distal part is larger and like the head of a snake.It is desferibed here as a new species. Female:unknown.