This species is endemic to Borneo, where it is currently known only from its type locality of Gunung Mulu National Park in northern Sarawak, Malaysia. It might occur slightly more widely. It has an elevational range of 65–1,200 m asl and its estimated extent of occurrence (EOO) is 675 km2.
Habitat and Ecology
All known specimens have been found in primary lowland and montane rainforest in limestone karst areas. The larvae are endotrophic and occur in small pools on the forest floor.
This species is abundant and common in suitable habitat (I. Das pers. comm. March 2018), and the population is considered to be stable.
This species is only known from Gunung Mulu National Park, where its habitat is well protected and not threatened at present (Y.M. Pui and I. Das pers. comm. March 2018).
This species occurs in Gunung Mulu National Park. This 52,000-ha park is the most studied tropical karst area in the world and is well protected.
Continued management of Gunung Mulu National Park is necessary for the conservation of this species (Y.M. Pui and I. Das pers. comm. March 2018).
Further survey work is required to determine the current population status of the species at this locality, and whether it might be present in other karst areas of Borneo.
Red List Status
Listed as Least Concern because, although this species' current known distribution is limited, it occurs only within a well-protected national park where there are currently no threats.
IUCN SSC Amphibian Specialist Group 2018. Pelophryne api. The IUCN Red List of Threatened Species 2018: e.T54865A123691713. .Downloaded on 21 November 2018