Range and elevation extension for the Yunnan Water Snake, Trimerodytes yunnanensis (Rao & Yang, 1998) (Serpentes, Colubridae), from Thailand and some notes on its natural history.

Trimerodytes yunnanensis (Rao & Yang, 1998), Mountain Water Snake, mainly occurs at elevations of more than 1,000 m above sea level (a.s.l.). We provide both a range extension to Lampang, Thailand, and the lowest known elevation record for this species at 400 m a.s.l. This record is also the southernmost known occurrence of T. yunnanensis and the genus as a whole. In addition, a morphological description of the juvenile, ecological notes in the field, and feeding habits in captivity are provided. [ABSTRACT FROM AUTHOR]