Rhabdophis helleri

Rhabdophis helleri, also known commonly as Heller’s red-necked keelback, is a venomous species of keelback snake in the subfamily Natricinae of the family Colubridae. The species is native to South Asia.

Etymology
The specific name, helleri, is in honor of American zoologist Edmund Heller.

Geographic range
R. helleri is found in Bangladesh, Bhutan, China (Fujian, Guangdong, Guangxi, Guizhou, Hong Kong, Sichuan, Yunnan), India (Arunachal Pradesh, Assam, Mizoram, Sikkim, Tripura), Myanmar, Nepal, and northern Vietnam.

Type locality: Tengyueh, 5500 feet elevation, Province of Yunnan, China, 25°01'N, 98°30'E.

Description
A medium-sized snake, R. helleri may attain a total length (including tail) of 1.3 m. It has 163–172 ventrals.

Reproduction
R. helleri is oviparous.

Venom
The venom of R. helleri can cause severe coagulopathy, but no human fatalities have been reported.