This species is known only from the vicinity of Sa Pa, in northern Viet Nam, from 1,200-1,900 m asl (Bourret 1942, Orlov 1997).
Habitat and Ecology
It is known from a karst canyon in montane evergreen forest (Orlov 1997). In captivity, small clutches of about 4-15 eggs are deposited a few cm above water level. The tadpoles eventually drop into the water where they develop (K. Kunz pers. comm. 2009).
It has been collected only on a few occasions in small numbers in a very limited area (Bourret 1942, Orlov 1997).
The most likely potential major threat to the species is habitat loss due to agricultural activities, selective logging, fires, and the development of infrastructure for tourist activities.
Its range is within Hoang Lien Son National Park. Safeguarding the integrity of Fan Si Pan mountain and the Sa Pa vicinity is of prime importance for the conservation of this species.
Red List Status
Listed as Endangered because its extent of occurrence is less than 5,000 km², all individuals are in fewer than five locations, and there is continuing decline in the extent and quality of its habitat in northern Viet Nam.
van Dijk, P.P., Ohler, A. & Kunz, K. 2004. Theloderma bicolor. The IUCN Red List of Threatened Species 2004: e.T59032A136597164. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T59032A11872718.en .Downloaded on 22 January 2019