Trimeresurus albolabris

The white-lipped pit viper, or white-lipped tree viper, is a venomous pit viper endemic to Southeast Asia. The maximum total length is 600 mm in males and 810 mm in females (Wikipedia, general species account). Trimeresurus albolabris, the white-lipped pit viper or white-lipped tree viper, is a venomous pit viper species endemic to Southeast Asia. Giannasi et al. (2001) raised insularis and septentrionalis to species level. Malhotra & Thorpe (2004) transferred this species (and a number of others) to the genus Cryptelytrops. (Wikipedia, general species account).

David et al. (2011) returned it to the genus Trimeresurus and assigned it the subgenus Trimeresurus, creating the new combination Trimeresurus (Trimeresurus) albolabris. Common names include green tree pit viper, white-lipped pit viper, white-lipped tree viper, white-lipped green pit viper and white-lipped bamboo pit viper. Maximum total length males 600 mm (24 in), females 810 mm (32 in). maximum tail length males 120 mm (4.7 in), females 130 mm (5.1 in). Head scalation comprises 10–11(12) upper labials, the first partially or completely fused to the nasal. (Wikipedia, general species account).