This species is known only from three small areas of western and south-western Cameroon: between Yabassi and Nkongsamba, at low elevations (apparently, it is absent to the west of Nkongsamba); Mount Yuhan in Korup National Park; and Mount Nta Ali in the Mamfe basin. It occurs mainly below 1,000 m Asl. Its EOO is 6,952 km2.
Habitat and Ecology
This species lives and breeds in and near rivers and slow-flowing streams in lowland and hilly closed-canopy forest. Males call from among dead leaves on the banks close to water.
It is a common species, certainly more so than Astylosternus laurenti. Due to ongoing decline in the extent and quality of habitat, the population is suspected to be decreasing.
It is severely threatened by loss of habitat within its very small range, primarily due to human settlement and agricultural encroachment. Human consumption could possibly be a threat (M.-O. Rödel pers. comm. July 2016).
This species occurs in Korup National Park.
Further protection of the remaining forest habitat is required.
Taxonomic research is required to provide more accurate species descriptions which will aid subsequent specimen identification (M.-O. Rödel pers. comm. July 2016).
Red List Status
Listed as Vulnerable because its extent of occurrence (EOO) is 6,952 km2, it occurs in fewer than 10 threat-defined locations, and there is a continuing decline in the extent and quality of its habitat.
IUCN SSC Amphibian Specialist Group 2017. Astylosternus fallax. The IUCN Red List of Threatened Species 2017: e.T54417A95841677. http://dx.doi.org/10.2305/IUCN.UK.2017-2.RLTS.T54417A95841677.en