Trimeresurus albolabris (Gray, 1842) |
|
Order Suborder |
Squamata 有鱗目 Serpentes 蛇亞目 |
Family | Viperidae 蝰蛇科 |
Genus | Trimeresurus |
Species | Trimeresurus albolabris |
Other name | White-lipped Pit viper |
Chinese name | 白唇竹葉青 |
Total length | Average 50 cm, can reach 90 cm; |
Description | Back and flank bright green. Females with a thin yellow line at junction of lowermost lateral scales with ventrals; this line is white in males. Skin with dark crossbands on dorsum; bands visible only when snakes inflates or after a large meal or in gravid females. Ventrals yellow, without any markings. Head green and strongly triangular. Eyes orange-yellow; with vertical, slit-like pupil. A heat-sensing pit between eye and nostril. Two large, hinged fangs at the front of upper jaw. Labials and side of neck yellow. Tail with a reddish-brown streak dorsally. Head scales granular. Dorsal scales moderately keeled. |
Habitat | Hong Kong's most common venomous snake, present at all altitudes. |
Behaviour | Primarily nocturnal. This snake and Mountain Pit Viper (Ovophis monticola makazayazaya) use a heat sensing pit to locate warm-blooded prey, enabling an accurate strike even in total darkness. Bite is painful and causes much swelling, but death is virtually unheard of in healthy people. |
Diet | Feeds on mammals, frogs, lizards and occasionally small birds. |
Reproduction | Viviparous. Pairing occurs in May. The female gives birth 2 months later. Average litter size is 12. Young snakes 15-20 cm long at birth. |
Distribution | Widely distributed throughout the territory including a number of small islands where it may be the only venomous snake present. Ranges from northern India to central and southern China, south to Indonesia. |
Conservation Status | IUCN Redlist: NE (Not Evaluated) |