Rhabdophis chiwen
Rhabdophis chiwen, the Chiwen keelback, is a keelback snake in the family Colubridae. It is endemic to Sichuan (China) and known from its type locality, Jiguan Mountain in Chongzhou, and from the neighboring Tianquan County. Adult males measure  and adult females  in snout–vent length. The tail is  and  in males and females, respectively. References

Rhabdophis
Snakes of China
Endemic fauna of Sichuan
Reptiles described in 2020