This species is known from the rainforests of western and southern Luzon, Polillo, Catanduanes, Tablas, Romblon, Marinduque, Cebu, Negros, and Panay in the Philippines, and it is not expected to occur on other islands (A. Diesmos pers. comm. March 2018). It occurs between 0–1,500 m asl (A. Diesmos pers. comm. March 2018).
Habitat and Ecology
This species inhabits the forest floor stratum in undisturbed and disturbed lowland and lower montane forests, and is occasionally found in human-controlled environments beside the forest. It breeds by direct development in leaf litter.
It is often a common to very common and abundant species. It was recorded in surveys in October 2010 on Mount Hilong-hilong (Plaza and Sanguila 2015), and surveys in 2012 on Cebu (Supsup et al. 2016). However, due to ongoing decline in the extent and quality of habitat, the population is suspected to be decreasing.
This is one of the most common forest species in the Philippines. However, some subpopulations are likely to be threatened by habitat loss due to shifting agriculture, expanding human settlements, wood collection for firewood and charcoal production, and illegal logging by commercial entities, especially in lowland forest. In addition, the construction of a major east-west road was completed in 2016 through the western part of Isabela Province and the presence of the road is anticipated to intensify illegal logging activities (Philippines Red List Assessment Workshop May 2017). Furthermore, nickel, chromite and gold mining are taking place within the Northern Sierra Madre and the Central Cordillera, as well as limestone and sand quarrying (Philippines Red List Assessment Workshop May 2017).
The range of this species includes several protected areas. Since the 2004 assessment, in collaboration with various regional academic institutions, NGO-led awareness campaigns have been taking place to educate the public regarding the need to protect remaining forests on Luzon Island, resulting in positive responses by local communities and improved protection for priority species.
The enforcement of protected area boundaries and appropriate management practices are required to safeguard the remaining habitat, especially of the remaining lowland rainforests.
Further research on this species' distribution, population size and trends is recommended.
Red List Status
Least Concern (LC)
Listed as Least Concern in view of its wide distribution, tolerance of a degree of habitat modification, and presumed large population.
Species that have been identified as Platymantis dorsalis need to be re-examined. Frogs of the dorsalis Group share many morphological features and closely resemble one another, which is perhaps the main reason for the failure of earlier herpetologists to separate them as valid species. We consider P. meyeri Günther, 1873 to be a synonym of P. dorsalis following Brown and Inger (1964).
IUCN SSC Amphibian Specialist Group 2018. Platymantis dorsalis. The IUCN Red List of Threatened Species 2018: e.T58458A114135324. http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T58458A114135324.en .Downloaded on 19 January 2019