Ansonia platysoma
family: Bufonidae

© 2007 Alexander Haas (1 of 2)

Frogs of Borneo account.

Conservation Status (definitions)
IUCN (Red List) Status Endangered (EN)
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: Malaysia


View distribution map using BerkeleyMapper.


From the IUCN Red List Species Account:


Range Description

This Bornean endemic occurs at a number of sites within Kinabalu National Park and at other sites in the Crocker Range south of Kinabalu in Sabah (Malaysia); it is also known from Gunung Mulu National Park in Sarawak. The altitudinal range in Kinabalu is 600-950m asl (Malkmus et al. 2002), and its overall altitudinal range is 750-1,600m asl.

Habitat and Ecology

Adults are found on the floor of montane forests and move to clear, rocky mountain creeks to breed. The larvae cling to rocks in torrents in these streams and presumably feed on lithophytes. It appears not to be able to survive in modified habitats.


This species is abundant at most locations where it has been reported (such as the Crocker Range).

Population Trend


Major Threats

Logging in the submontane and montane forests could potentially lead to siltation of the streams needed for larval development and result in loss of the lithophytes.

Conservation Actions

The species is known to be present in the Kinabalu and Gunung Mulu National parks, both of which are reasonably well managed; however, further protection of the remaining forest habitats, and continued management of the existing protected areas, are needed. Additional surveys of potentially suitable sites in Kalimantan are required to establish whether this species occurs there.

Red List Status

Endangered (EN)


Listed as Endangered, in view of its extent of occurrence of less than 5,000 km2 and area of occupancy of less than 500 km2, with all individuals in fewer than five locations, and a continuing decline in the extent and quality of its habitat.


Robert Inger, Indraneil Das, Robert Stuebing, Maklarin Lakim, Paul Yambun 2004. Ansonia platysoma. The IUCN Red List of Threatened Species 2004: e.T54480A11138943.


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