Trimeresurus jerdonii

Trimeresurus jerdonii is a venomous pitviper species found in India (Assam), Burma, Tibet, China and Vietnam. Three subspecies are currently recognized, including this one.
Where they are found.
Found from Assam in India, through northern Burma to Tibet, China (Hupeh, Szechwan and Yunnan) and Vietnam. The type locality given is "Khasi Hills, India."
What they look like.
Males grow to a maximum total length of 835 mm with a tail length of 140 mm; females 990 mm with a tail length of females 160 mm.