
Photo: Sachinraoherps121 · CC BY-SA 4.0 (May be cropped or resized)
Trimeresurus arunachalensis
Range
Ramda village, West Kameng district, Arunachal Pradesh (single known site)
Size
Up to 648mm
The Arunachal pit viper is a venomous pit viper endemic to Arunachal Pradesh, known only from the village of Ramda in West Kameng district, where a single specimen was discovered during biodiversity surveys. It can grow to 648 mm (Wikipedia, general species account).
It can be told from other pit vipers by its unforked, slender hemipenis without large spines, a uniquely pointed snout and a well-defined ridge over the eye that overhangs the area ahead of it.