Das & Haas, 2010
Microhyla nepenthicola, also known as the Mantang narrow-mouthed frog, is a species of microhylid frog found in the Matang Range in Sarawak, Borneo. It was once the smallest known frog from the Old World (the current record holder is Paedophryne amauensis from New Guinea). Adult males of this species have a snout-vent length (SVL) of 10.6–12.8 mm. Tadpoles measure just 3 mm. It is one of 30 species in the genus Microhyla, 5 others of which live in Borneo.
Habitat and distribution
M. nepenthicola is found near Mount Serapi in Kubah National Park, Sarawak, Borneo. It spends much of its lifecycle in the traps of the pitcher plant Nepenthes ampullaria, after which it is named. It is therefore considered a nepenthebiont. This is not particularly unusual; in fact, it shares this environment with a species of crab spider, Misumenops nepenthicola, which is also commonly found in Nepenthes pitchers, and is similarly named for this reason. Microhyla nepenthicola has less webbing on its feet than most frogs, which may be beneficial when trying to climb the sides of the pitcher plants, which can be slippery.
Frogs of the species that was eventually described as Microhyla nepenthicola had been known to scientists for at least 100 years prior to its description in 2010. However, scientists had always assumed that the frogs were juveniles of another species. Researchers Indraneil Das and Alexander Haas recognized that they were actually adults when they heard the frogs calling in Kubah National Park, since only adult frogs make calls. Adult males call from the pitcher plants at dusk.
- Das, I. & A. Haas. (2010). "New species of Microhyla from Sarawak: Old World’s smallest frogs crawl out of miniature pitcher plants on Borneo (Amphibia: Anura: Microhylidae)". Zootaxa 2571: 37–52.
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- Gururaja, K.V. 2010. PDF Current Science 99(8): 1000.
- "World's smallest frog is size of a pea". New York Post. 2006-08-26. Retrieved 2010-08-26.
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- Data related to Microhyla nepenthicola at Wikispecies