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This species is found only on Palawan Island, in the Philippines. The type locality was at an elevation of 1,500m asl.

It inhabits arboreal microhabitats in riverine habitat in montane and lowland forests. Its breeding biology is unrecorded, but it presumably takes place in water by larval development.

It is apparently rare, and there have been no field observations of this species for more than 40 years, though this may be an artefact of limited survey work.

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The loss of lowland rainforest, mainly due to agricultural activities and selective logging, is a major threat to this species.

• 5.3.5 Motivation Unknown/Unrecorded
• 2.1.1 Shifting agriculture

Although the forests on Palawan are, in general, reasonably well protected in much of the island, more effective protection of the remaining rainforest on the island, especially riverine habitats and gallery forests, is necessary. Further survey work is also needed to establish the current population status of this species.

• 2.3 Habitat & natural process restoration
• 1.1 Site/area protection
• 4.3 Awareness & communications
• 2.1 Site/area management

Listed as Endangered because its Extent of Occurrence is less than 5,000 km2, all individuals are in fewer than five locations, and there is continuing decline in the extent and quality of its habitat on Palawan in the Philippines.

• Alcala, A.C. and Brown, W.C. 1985. Philippine Amphibians: An Illustrated Field Guide. Bookmark Press, Makati City, Philippines.
• Brown, R.M., Diesmos, A.C. and Alcala, A.C. 2001. The state of Philippine herpetology and the challenges for the next decade. Silliman Journal 42(1): 18-87.
• Frost, D.R. 1985. Amphibian Species of the World: A Taxonomic and Geographic Reference. Allen Press and the Association of Systematic Collections, Lawrence, Kansas.
• Inger, R.F. 1954. The systematics and zoogeography of Philippine Amphibia. Fieldiana 33: 181-531.
• Inger, R.F. 1960. Notes on the toads of the genus Pelophryne. Fieldiana: Zoology: 415-418.
• Inger, R.F. 1999. Distributions of amphibians in southern Asia and adjacent islands. In: W.E. Duellman (ed.), Patterns of Distribution of Amphibians: A Global Perspective, pp. 445-482. John Hopkins University Press.
• Taylor, E.H. 1923. Additions to the herpetological fauna of the Philippine Islands, III. Philippine Journal of Science: 515-557.