Trimeresurus albolabris
Trimeresurus albolabris, the white-lipped pit viper or white-lipped tree viper, is a venomous pit viper species endemic to Southeast Asia. Taxonomy. 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". 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 . Description. Maximum total length males , females ; maximum tail length males , females . Head scalation consists of 10–11(12) upper labials, the first partially or completely fused to the nasal. Head scales small, subequal, feebly imbricate, smooth or weakly keeled. The supraoculars are narrow (occasionally enlarged and undivided) with 8–12 interocular scales between them. Temporal scales smooth. Midbody has 29 (rarely 19) longitudinal dorsal scale rows. The ventral scales are 155–166 in males, 152–176 in females. The subcaudals are paired, 60–72 in males, 49–66 in females. The hemipenes are without spines. Color pattern: green above, the side of the head below the eyes  is yellow, white or pale green, much lighter than rest of head. The belly is green, yellowish or white below. A light ventrolateral stripe is present in all males, but absent in females. The end of tail is not mottled brown. Distribution and habitat. Found in Nepal northeastern India (Assam and Jharkhand), Bangladesh, Myanmar, Thailand, Cambodia, Laos, Vietnam, southern China (Fukien, Hainan, Kwangsi, Kwangtung), Hong Kong, Macau, Indonesia (Sumatra, Java, Lombok, Sumbawa, Komodo, Flores, Sumba, Roti, Kisar, Wetar). The type locality given is "China". Diet. Its meals consist of birds, small frogs, and small mammals. This snake doesn't strike  and release its prey; like many arboreal snakes, it strikes and holds on to the prey item until the prey dies. Venom. Results of bites from this species range from mild envenoming to death. The venom of white-lipped pitviper contains procoagulant properties. There have been numerous reported bites with few fatalities.