This species is known from montane forests in north-western Borneo, from 1,500-3,000m asl. It is likely to occur a little more widely than current records suggest.
Habitat and Ecology
It is a montane species of oak-chestnut forest. Males call from the shrub layer 0.5-3m above the ground. It breeds by direct development and eggs may be deposited in pitcher plants (Malkmus et al. 2002).
Estimates of the population from the calls of isolated males suggest that it is locally abundant.
There are no threats to the species at present as most of the logging in Borneo is occurring at lower altitudes.
It occurs in at least three national parks, including Gunung Kinabalu and Gunung Mulu National Parks.
Red List Status
Near Threatened (NT)
Listed as Near Threatened since although this species is still relatively widely distributed, it depends on areas of undisturbed forest habitat, and so its Area of Occupancy is probably not much greater than 2,000 km2, and the extent and quality of its habitat is declining, thus making the species close to qualifying for Vulnerable.
Robert Inger, Djoko Iskandar, Indraneil Das, Robert Stuebing, Maklarin Lakim, Paul Yambun, Mumpuni 2004. Philautus mjobergi. The IUCN Red List of Threatened Species 2004: e.T58875A11851680. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T58875A11851680.en .Downloaded on 19 January 2019