Episinus Walckenaer, 1809

Hu, Changhao, Wei, Mian, Liu, Jie & Xu, Xiang, 2025, Asiopisinus gen. nov., a new genus of the family Theridiidae Sundevall, 1833 (Araneae, Theridiidae) from eastern Asia, Zootaxa 5660 (4), pp. 475-504 : 484

Genus Episinus Walckenaer, 1809

Type species. Episinus truncatus Latreille, 1809 from Europe.

Remarks. Liang et al. (2025) considered Episinus longabdomenus Zhu, 1998 , E. nanyue Yin, 2012 , E. papilionaceous Liu, Agnarsson, Liu & Zhu, 2022 , and E. xiushanicus Zhu, 1998 belonging to the angulatus group. The copulatory organs of these four species share the same characteristics with E. truncatus , including cymbium longer than wide, cymbial hook ( CH) located in anterior part of cymbium and elongated prolaterally, extra tegular apophysis (ETA) present, median apophysis (MA) and tegular apophysis (TA) long and strip-shaped ( Fig. 17 , 20 , Knoflach & Pfaller 2004: fig. 20b, Agnarsson et al. 2007: figs 24‒27, 180); windings of copulatory ducts (CD) much longer than spermathecae (S) ( Figs 18 , 19 , Knoflach & Thaler 2000: fig. 22). Therefore, we provide the photos of these four species to compare with those of Asiopisinus gen. nov..

Figures

FIGURES 17A‒F. Left male palp of Episinus longabdomenus Zhu, 1998, arrows point to the groove on tegulum A prolateral view B ventral view C retrolateral view D expanded bulb, prolateral view E expanded bulb, ventral view F expanded bulb, dorsal view. Abbreviations: C—conductor; E—embolus; EB—embolic base; ETA—extra tegular apophysis; ST—subtegulum; T—tegulum; TA—tegular apophysis. Scale bars: 0.2 mm.

FIGURES 18A‒B. Epigyne of Episinus nanyue Yin, 2012 A ventral view B dorsal view.Abbreviations: CD—copulatory ducts; FD—fertilization ducts; S—spermathecae. Scale bars: 0.1 mm.

FIGURES 19A‒B. Epigyne of Episinus papilionaceous Liu, Agnarsson, Liu & Zhu, 2022 A ventral view B dorsal view. Abbreviations: CD—copulatory ducts; FD—fertilization ducts; S—spermathecae. Scale bars: 0.1 mm.

FIGURES 20A‒E. Left male palp of Episinus xiushanicus Zhu, 1998 A prolateral view B ventral view C retrolateral view D expanded bulb, dorsal view E expanded bulb, ventral view. Abbreviations: C—conductor; E—embolus; EB—embolic base; ETA—extra tegular apophysis; ST—subtegulum; T—tegulum; TA—tegular apophysis. Scale bars: 0.2 mm.