Psechrus sinensis, Berland & Berland, 1914

Bayer, Steffen, 2014, Seven new species of Psechrus and additional taxonomic contributions to the knowledge of the spider family Psechridae (Araneae), Zootaxa 3826 (1), pp. 1-54 : 22

sinensis- group

Diagnosis (reproduced from Bayer 2012): Males with complex conductor and embulus: Conductor with pointed distal ending(s) and numerous small or very small, short spines or tubercles ( Figs 12 , 13 A, 15; Bayer 2012, figs 52a–b, 54a–b, 56a–b, 61a–b, 66a); Embolus always with distinct base containing either ridges ( Bayer 2012, fig. 66c) and/or serrated margins ( Bayer 2012, figs 56b, 62b) and/or very small tubercles ( Bayer 2012, fig. 52c, 54b–c).

In females, median septum generally longer than broad ( Bayer 2012, figs 53a, 62a) (alternatively almost as long as broad, Bayer 2012, fig. 55e); copulatory ducts long and with bulbous ( Bayer 2012, figs 53b, 63b, 64b) and/ or twisted ( Figs 14 B, 16B; Bayer 2012, figs 55f, 59b) sections.

The sinensis -group includes the following 12 species: Psechrus sinensis Berland & Berland, 1914 , P. triangulus Yang, Zhang, Zhu & Song, 2003, P. tingpingensis Yin, Wang & Zhang, 1985 , P. obtectus Bayer, 2012 , P. fuscai Bayer, 2012 , P. kunmingensis Yin, Wang & Zhang, 1985 , P. jinggangensis Wang & Yin, 2001 , P. senoculatus Yin, Wang & Zhang, 1985 , P. kenting Yoshida, 2009 , P. taiwanensis Wang & Yin, 2001 , P. clavis Bayer, 2012 , and P. ampullaceus sp. nov.. The sinensis -group is distributed in China, Taiwan and Vietnam. It is possible that (additional) species of this group will be also found in Myanmar and Laos in the future.

Figures

FIGURE 12. Psechrus ampullaceus sp. nov., male paratype SB 1241, MHNG, from Sa Pa, Lao Cai Prov., Vietnam: left pedipalp. A. prolateral, B. ventral, C. retrolateral view.

FIGURE 13. Psechrus ampullaceus sp. nov., male paratype SB 1242, AMNH, from Sa Pa, Lao Cai Prov., Vietnam: left pedipalp. A. Pedipalp, ventral view; B. Palpal femur, retrolateral view.

FIGURE 14. Psechrus ampullaceus sp. nov., female holotype (SB 1240, MHNG) from Thac Bac Waterfall, Lao Cai Prov., Vietnam: copulatory organ. A. Epigyne, ventral view. B. Vulva, dorsal view. C. Schematic course of internal duct system. CD: Copulatory duct; FD: Fertilisation duct; SB: Spermathecal base; SH: Spermathecal head; TSC: Twisted and bulbous section of copulatory duct.