DistributionRead full entry
Range DescriptionThis snake is known only from Viet Nam, where it has been recorded from Yen Bai, Lao Cai, Quang Tri and Quang Nam Provinces (Nguyen et al. 2009). It is suspected to occur in adjacent areas of Lao PDR, but has never been recorded there (B. Stuart and Q.T. Nguyen pers. comm. 2011). The snake's extent of occurrence, based on the combined area of known sites, is approximately 18,000 km2. It has been found from 400 - 700 m asl.