Kalophrynus baluensis

Kalophrynus baluensis (common names: Malaysian grainy frog, Balu sticky frog,[2] Kinabalu sticky frog[3]) is a species of frog in the family Microhylidae. It is endemic to Mount Kinabalu in Sabah (East Malaysia, Borneo).[2]

Kalophrynus baluensis
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Microhylidae
Genus: Kalophrynus
Species:
K. baluensis
Binomial name
Kalophrynus baluensis
Kiew, 1984

Kalophrynus baluensis is unusual in that it appears to have diverged from its closest known relative that is not endemic to Mount Kinabalu before the mountain reached its present elevation. Most other Mount Kinabalu endemics are younger than the mountain (approximately 6 million years), and thus appear to have evolved there relatively recently.[4]

Description

Kalophrynus baluensis is a stocky, short-legged frog. Females grow to 39 mm (1.5 in) in snout–vent length; males stay slightly smaller. Its brown colouration makes its perfectly camouflaged in its habitat, the leaf litter layer on the forest floor.[3]

Habitat and conservation

Natural habitats of Kalophrynus baluensis are montane oak-chestnut forests at elevations of 1,300–1,800 m (4,300–5,900 ft) asl.[1] They are usually encountered on the forest floor. Male advertisement calls have been heard some distance away from water, suggesting that it might breed in phytotelmata.[3]

There are no major threats to the species, and it is known to occur in the Kinabalu National Park. Nevertheless, its total area of distribution is relatively small.[1]

References
  1. IUCN SSC Amphibian Specialist Group. 2018. Kalophrynus baluensis. The IUCN Red List of Threatened Species 2018: e.T57833A123692823. https://dx.doi.org/10.2305/IUCN.UK.2018-1.RLTS.T57833A123692823.en. Downloaded on 22 December 2018.
  2. Frost, Darrel R. (2015). "Kalophrynus baluensis Kiew, 1984". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 26 August 2015.
  3. Haas, A.; Hertwig, S.T.; Das, I. (2015). "Kalophrynus baluensis Kinabalu Sticky Frog". Frogs of Borneo. Retrieved 26 August 2015.
  4. Merckx, Vincent S. F. T.; Hendriks, Kasper P.; Beentjes, Kevin K.; Mennes, Constantijn B.; Becking, Leontine E.; et al. (2015). "Evolution of endemism on a young tropical mountain" (PDF). Nature. 524 (7565): 347–350. doi:10.1038/nature14949. PMID 26266979.
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