Trimeresurus albolabris
| Trimeresurus albolabris | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Subphylum: | Vertebrata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Viperidae |
| Subfamily: | Crotalinae |
| Genus: | Trimeresurus |
| Species: | T. albolabris |
| Binomial name | |
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Trimeresurus albolabris Gray, 1842 |
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| Synonyms | |
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The white-lipped pit viper (Trimeresurus albolabris) is a venomous pit viper species endemic to Southeast Asia. Three subspecies are currently recognized, including the nominate subspecies described here.
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).
Trimeresurus albolabris, White-lipped pit viper (adult, male) - Kaeng Krachan National Park.
Trimeresurus albolabris, White-lipped pit viper (adult, female) - Kaeng Krachan National Park.
T. albolabris (juvenile/male) - Kaeng Krachan National Park
T. albolabris (juvenile/female) - Kaeng Krachan National Park
T. albolabris at the Houston Zoo
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 21 (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.
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.
Found in northern India (Assam and Jharkhand), Nicobar Islands, Bangladesh, Myanmar, Thailand, Cambodia, Laos, Vietnam, southern China (Fukien, Hainan, Kwangsi, Kwangtung), Hong Kong, Philippines, West Malaysia, Indonesia (Sumatra, Borneo, Sulawesi, Java, Madoera, Lombok, Sumbawa, Komodo, Flores, Sumba, Roti, Timor, Kisar, Wetar). The type locality given is "China".
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