About Nyctixalus margaritifer Boulenger, 1882
In terms of body measurements, adult males of Nyctixalus margaritifer measure 30–33 mm (1.2–1.3 in) in snout–vent length, while adult females measure 31–43 mm (1.2–1.7 in). The species has a slender and flattened body, a distinct tympanum, and slender fingers and toes that bear medium-sized terminal discs. Its skin is coarsely granular, and its base color ranges from orange to dark brown, with yellow spots present on the eyelids and shoulders. For habitat and conservation status, Nyctixalus margaritifer lives in undisturbed highland forests, and it also occurs in coffee plantations that have sufficient forest canopy cover. This species breeds in water-filled tree holes, where tadpoles complete their development. Nyctixalus margaritifer is a rare species that is threatened by forest loss. Confirmed populations are found in Mount Halimun Salak National Park and Gunung Gede Pangrango National Park. There is an unconfirmed record of the species from Mount Merapi National Park. Single individuals have also been recorded from Telaga Warna Nature Reserve, and from an area located very close to Gunung Sigogor Nature Reserve.
