This species is so far known only from Thailand. There are records from central peninsular Thailand, in Surat Thani Province (at Khlong Saeng Wildlife Sanctuary and Khao Sok National Park), and Ranong Province (at Klong Hat Som Pen, Muang) (Matsui, 2006). Further north there is a record from southwestern mainland Thailand (at Pilok, Thong Pha Phum, in Kanchanaburi Province) (Matsui 2006). It presumably occurs in intervening areas, such as Myanmar. Its elevational range is not known.
Habitat and Ecology
Males have been found calling at night among stones and litter on on slopes one to ten metres from small streams (Matsui 2006). It presumably breeds in streams by larval development. It is not known whether or not it can tolerate anthropogenic disturbance of its habitat.
There is no information on its abundance.
There is no direct information on threats, but it is likely to be affected by ongoing forest loss due to logging and expanding agriculture.
It occurs in Khlong Saeng Wildlife Sanctuary and Khao Sok National Park (Matsui 2006). Surveys are needed to determine its geographic distribution, abundance, ecological requirements, threats and conservation needs.
IUCN SSC Amphibian Specialist Group 2014. Leptolalax melanoleucus. In: IUCN 2014