Range Description

This species occurs only in central Indochina from central Myanmar southeast through much of Thailand and Lao PDR and Cambodia to the Mekong Delta of Viet Nam (Moore and Tate 1965; Corbet and Hill 1992; Oshida et al. 2001).
An apparently undescribed form of this species was found in the limestone mountains of central Lao PDR (Evans et al. 2000). A small introduced population exists in Singapore (B. Lee pers. comm.).