Alcalus baluensis

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Alcalus baluensis
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Ceratobatrachidae
Genus: Alcalus
Species: A. baluensis
Binomial name
Alcalus baluensis
(Boulenger, 1896)

Cornufer baluensis Boulenger, 1896
Micrixalus baluensis (Boulenger, 1896)
Ingerana baluensis (Boulenger, 1896)

Alcalus baluensis is a species of frog in the family Ceratobatrachidae. It is endemic to northern and western Borneo and found in Brunei, Indonesia, and Malaysia. Its common name is Balu eastern frog or dwarf mountain frog. It was placed in Dicroglossidae before being transferred to Ceratobatrachidae in 2015.[2]


Alcalus baluensis are small but stocky frogs. They typically measure 21–25 mm (0.83–0.98 in) in snout–vent length. Tympanic ring is visible.[3]

Habitat and conservation[edit]

Its natural habitats are lowland and mid-elevation primary rainforests. It occurs on the forest floor in leaf litter and along stream banks. It is threatened by habitat loss.[1]


  1. ^ a b Inger, R.; Iskandar, D.; Das, I.; Stuebing, R.; Lakim, M.; Yambun, P. & Mumpuni (2004). "Alcalus baluensis". The IUCN Red List of Threatened Species. IUCN. 2004: e.T58318A11764761. doi:10.2305/IUCN.UK.2004.RLTS.T58318A11764761.en. Retrieved 13 January 2018. 
  2. ^ Frost, Darrel R. (2015). "Alcalus baluensis (Boulenger, 1896)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 1 August 2015. 
  3. ^ Haas, A.; Hertwig, S.T.; Das, I. (2014). "Ingerana baluensis (Dwarf Mountain Frog)". Frogs of Borneo. Retrieved 1 August 2015.