Malayan pit viper (Calloselasma rhodostoma) | 台北市立動物園資訊網

Malayanpitviper...Calloselasmaisamonotypicgenuscreatedforavenomouspitviperspecies,C.rhodostoma,whichisendemictoSoutheastAsiafromThailand ...

Calloselasma is a monotypic genus created for a venomous pit viper species, C. rhodostoma, which is endemic to Southeast Asia from Thailand to northern Malaysia and on the island of Java. No subspecies are currently recognized.

Attains an average total length of 76 cm, with females being slightly longer than males. Occasionally, they may grow as long as 91 cm.

A specimen with a total length of 81 cm has a tail 9 cm long.

Dorsally it is reddish, grayish, or pale brown, with two series of large, dark brown, black-edged triangular blotches, which are alternating or opposite. There is also a thin dark brown vertebral stripe, which may be interrupted or indistinct in some specimens. The upper labials are pink or yellowish, and powdered with brown. There is a broad, dark brown, black-edged diagonal stripe from the eye to the corner of the mouth, with a narrower ...