This species is found throughout highland forest habitat on Java and the Lampung Province in the south of Sumatra, Indonesia. It occurs from below 100–1,420 m asl (Indonesia Red List Assessment Workshop May 2017). It is now also known from a museum specimen from Ujung Kulon National Park (A. Riyanto pers. comm. May 2017).
Habitat and Ecology
It is a species of the forest floor. It mainly lives in undisturbed forest, however it has also been found in coffee plantations below mountain areas with adequate canopy cover (M. Munir pers. comm. May 2017). Reproduction is unknown, but the eggs might be laid on the ground near streams. The tadpoles develop in streams. One female was found to contain 130 eggs (M. Kusrini pers. comm. August 2009).
It is uncommon below 700 m asl, and more common in the higher suitable habitat above 700 m asl (M. Munir pers. comm. May 2017).
The major threat is habitat loss from smallholder farming. This species has recently tested positive for Batrachochytrium dendrobatidis (Kusrini et al. 2008), although no ill effects or mortalities have been observed as of yet.
This species occurs in Ujung Kulon, Gunung Halimun, Gunung Gede Pangrango National Parks, and Gunung Tangkuban Perahu Natural Reserve.
Further habitat protection is required.
It is important to assess the presence and extent of the impact of the chytrid fungus on frog populations in Indonesia (Kusrini et al. 2008).
Red List Status
Least Concern (LC)
Listed as Least Concern in view of its relatively wide distribution, tolerance to a degree of habitat modification, and presumed large population.
This species has been reported in the past from the Philippines, Borneo, Sulawesi and the whole of Sumatra and the Mentawai Islands. Specimens from the Philippines are now referred to Limnonectes laytensis and those from Borneo are referred to L. palavensis and L. finchi. Those from Sulawesi, most of Sumatra and the Mentawai Islands belong to an undescribed species that are not covered here (D. Iskandar pers. comm.).
IUCN SSC Amphibian Specialist Group 2018. Limnonectes microdiscus. The IUCN Red List of Threatened Species 2018: e.T58358A3068551. http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T58358A3068551.en .Downloaded on 17 January 2019