This species occurs in at least three areas of the island of Java, Indonesia, above 700 m asl. It was rediscovered in 1997 after a long absence of records.
Habitat and Ecology
It lives in undisturbed highland forest. It presumably breeds in tree holes by larval development, but its breeding habits have not been recorded.
It is a rare species, and fewer than ten specimens are known.
The major threat to this species is the loss of its forest habitat due to smallholder farming and subsistence wood collection.
It occurs in Halimun and Gunung Gede Pangrango National Parks.
Red List Status
Listed as Vulnerable because its extent of occurrence is less than 20,000 km2, its distribution is severely fragmented, and there is continuing decline in the extent and quality of its forest habitat in Java.
Iskandar, D. & Mumpuni 2017. Nyctixalus margaritifer. The IUCN Red List of Threatened Species 2017: e.T58804A114112141. http://dx.doi.org/10.2305/IUCN.UK.2017-1.RLTS.T58804A114112141.en .Downloaded on 13 November 2018