Microhyla petrigena

Microhyla petrigena is a species of frog in the family Microhylidae.[1][2][3] It is found in northern and central Borneo (Brunei, southeastern Sabah and central Sarawak, Malaysia, and central Kalimantan, Indonesia) and in the Sulu Archipelago of the Philippines. Common names pothole narrow-mouthed frog and Kapit rice frog have been coined for it.[1][2]

Microhyla petrigena

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Microhylidae
Genus: Microhyla
Species:
M. petrigena
Binomial name
Microhyla petrigena
Inger and Frogner, 1979

Description

Microhyla petrigena is a small species of Microhyla: adult males measure 14–16 mm (0.6–0.6 in) and adult females 15–18 mm (0.6–0.7 in) in snout–vent length.[4] The hand has only three fingers. The dorsum is colored in shades of brown. There are dark markings on the shoulder and a light band on the flank.The venter is dark with an irregular white blotch.[3]

The male advertisement call is a single, pulsed note, emitted in series consisting of maximally 15 notes. Call repetition rate is about 0.7 per second, declining towards the end of the series.[4]

Habitat and conservation

Microhyla petrigena occurs in lowland primary rainforests at elevations below 700 m (2,300 ft).[1] It lives in leaf litter. Breeding takes place in small pot-holes on rocky banks of clear streams and rivers and appears to be restricted to certain nights.[1][4] The egg masses float on the surface of these pools.[4] The tadpoles feed in mid-water.[3] This species appears not to be able to adapt to modified habitats. It is threatened by habitat loss caused by logging and conversion in palm oil plantations; the type locality has already been destroyed and species has likely disappeared from there. However, the species occurs in several protected areas.[1]

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References
  1. IUCN SSC Amphibian Specialist Group (2018). "Microhyla petrigena". IUCN Red List of Threatened Species. 2018: e.T57889A58478677. doi:10.2305/IUCN.UK.2018-2.RLTS.T57889A58478677.en.
  2. Frost, Darrel R. (2019). "Microhyla petrigena Inger and Frogner, 1979". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 2 March 2019.
  3. Haas, A.; Das, I. & Hertwig, S.T. (2017). "Microhyla petrigena Pothole Narrow-mouthed Frog". Frogs of Borneo. Retrieved 2 March 2019.
  4. Dehling, J. M. (2010). "Advertisement calls of two species of Microhyla (Anura: Microhylidae) from Borneo". Salamandra. 46 (2): 114–116.
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