This species is presently known only from the Danum Valley Conservation Area, Sabah, Malaysian Borneo. It appears to have a genuinely restricted distribution. Specimens have been collected below 250 m asl.
Habitat and Ecology
It lives in leaf-litter on the forest floor. Little is known of its habits, but presumably it breeds in small rain pools like most of its congeners.
There is little information on the population status of this species. It is known only from two or three specimens and has not been observed since the species' description in 1989 (P. Yambun pers. comm. January 2018). This species appears to be uncommon and difficult to find, which may be due in part to its small size (P. Yambun pers. comm. January 2018). Surveys in Danum Valley have not found any additional specimens, however these surveys have not been focused on locating this particular species (P. Yambun pers. comm. January 2018).
There are no current threats to this species, as Danum Valley is a well-protected area.
The population is entirely within the Danum Valley Conservation Area, which is the largest protected lowland dipterocarp forest in Malaysian Borneo.
Additional surveys are needed within Danum Valley to obtain more information on this species' distribution, population status, and life history.
Red List Status
Listed as Data Deficient in view of the absence of recent information on its extent of occurrence, population status and ecological requirements.
IUCN SSC Amphibian Specialist Group 2018. Microhyla maculifera. The IUCN Red List of Threatened Species 2018: e.T57884A123692988. http://dx.doi.org/10.2305/IUCN.UK.2018-1.RLTS.T57884A123692988.en .Downloaded on 21 January 2019