Account
What the sources say about this taxon, as written.
diagnosis · 
Plazi
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.
diagnosis · Plazi
Revised diagnosis (see also diagnosis for sinensis -group above). Males similar to P. triangulus Yang, Zhang, Zhu & Song 2003 in having long embolus base (EB) (longer than conductor [C]), possessing numerous tubercles distally ( Figs 52a–c , 54a–c ). Distinguished by the filiform distal part of embolus (E) and by the tip of C pointing prolaterally ( Fig. 52b ). Females similar to P. triangulus in having median septum (MS) with posterior part at least four times broader than anterior part ( Figs 53a , 54e ). Copulatory ducts (CD) without twist, the bulbous sections of CD about as broad as spermatheca ( Figs 53b , 54f ). Distinguished by the anteriorly rounded posterior section of MS ( Fig. 53a ), the broader copulatory ducts and the spermathecae laterally just slightly extending beyond CD ( Fig. 53b ).