AmphibiaWeb - Platymantis negrosensis


(Translations may not be accurate.)

Platymantis negrosensis Brown, Alcala, Diesmos & Alcala, 1997
Negros Forest Frog
family: Ceratobatrachidae
subfamily: Ceratobatrachinae
genus: Platymantis
Conservation Status (definitions)
IUCN Red List Status Account Near Threatened (NT)
National Status None
Regional Status None
conservation needs Access Conservation Needs Assessment Report .


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Platymantis negrosensis, also known as the Negros Forest Frog, has a snout-vent length ranging from 30-50 mm. It has scattered tubercles and ridges on its back. The disks of its fingers are broadly dilated.

Distribution and Habitat

Country distribution from AmphibiaWeb's database: Philippines

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Platymantis negrosensis is endemic to the Philippines. It is found in Mt. Canlaon and Cuernos de Negros, Negros Island, at elevations of 500-1050 m. There is a population in Panay that is also speculated to belong to this species. This arboreal species lives in primary forests. Preferred microhabitats in lower montane and lowland forests include arboreal ferns and the leaf axils of screw pines and plants of the family Araceae.

Life History, Abundance, Activity, and Special Behaviors
This nocturnal species breeds and lays eggs in arboreal ferns. Platymantis negrosensis is oviparous and their young undergo direct development. The female frog lays approximately 40 unpigmented eggs that develop directly into froglets in as little as 39 days.

Trends and Threats
The populations of P. negrosensis in Negros Island have declined from common to rare. Their populations in Panay have not been recently assessed.

Relation to Humans
There is no known use of this species.

Possible reasons for amphibian decline

General habitat alteration and loss
Habitat modification from deforestation, or logging related activities
Intensified agriculture or grazing

Platymantis negrosensis was confused with P. guentheri prior to its description. Conservation measures in place include the establishment and management of protected areas.


Alcala, A. C. and Brown, W. C. (1998). Philippine Amphibians: Illustrated Field Guide. Bookmark, Inc., Philippines.

Frost, D. R. 2004. Amphibian Species of the World: an On-line Reference. Version 3.0. (22 August, 2004). Electronic Database accessible at American Museum of Natural History, New York, USA.

Platymantis negrosensis: Negros Forest Frog.” Global Amphibian Assessment. 15 Oct. 2004. IUCN, The World Conservation Union, Conservation Internatural and NatureServe. 29 Sept. 2005 .

Originally submitted by: Janel Marcelino (first posted 2005-10-06)
Edited by: Tate Tunstall (2007-11-23)

Species Account Citation: AmphibiaWeb 2007 Platymantis negrosensis: Negros Forest Frog <> University of California, Berkeley, CA, USA. Accessed Jul 14, 2024.

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Citation: AmphibiaWeb. 2024. <> University of California, Berkeley, CA, USA. Accessed 14 Jul 2024.

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