Isthmohyla calypsa

Isthmohyla calypsa is a species of frogs in the family Hylidae. It is known from the southern Cordillera de Talamanca in Costa Rica, Cerro Pando in Costa Rica and Panama, and the Pacific slope in southwestern Panama.[1][2] It appears to have gone extinct in Costa Rica.[1] Prior to its description in 1996, this species was confused with Isthmohyla lancasteri, a species now known from lower altitudes only.[2][3]

Isthmohyla calypsa

Critically Endangered  (IUCN 3.1)[1]
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Hylidae
Genus: Isthmohyla
Species:
I. calypsa
Binomial name
Isthmohyla calypsa
(Lips, 1996)
Synonyms[2]

Hyla calypsa Lips, 1996[3]

Description

Males grow to about 36 mm (1.4 in) and females to about 41 mm (1.6 in) in snout–vent length. The dorsum is metallic green, mottled with darker drab green or brown blotches and covered by large, spinous bumps (females are spinier than males). Also the limbs are spiny. The ventrum is white and has some scattered black blotches or smaller spots. The groin and the thighs are bright white and have scattered black spots.[4][3]

Habitat and conservation

Isthmohyla calypsa live in primary humid lower montane forests along torrential streams[1] at elevations of 1,500–2,100 m (4,900–6,900 ft) above sea level.[3]

This species has disappeared from Costa Rica. Its abundance in Panama is unknown although it is assumed to have declined there too. The declines have happened within pristine habitats and are probably caused by chytridiomycosis. Also habitat loss from smallholder livestock farming is a threat for this species. It has been recorded in the La Amistad International Park and might occur in the Volcán Barú National Park.[1]

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References
  1. Bolaños, F.; Chaves, G.; Solís, F.; Ibáñez, R.; Savage, J.; Jaramillo, C.; Fuenmayor, Q.; Vargas, J. (2008). "Isthmohyla calypsa". IUCN Red List of Threatened Species. 2008: e.T55432A11310707. doi:10.2305/IUCN.UK.2004.RLTS.T55432A11310707.en.
  2. Frost, Darrel R. (2016). "Isthmohyla calypsa (Lips, 1996)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 3 January 2017.
  3. Lips, Karen R. (1996). "New treefrog from the Cordillera de Talamanca of Central America with a discussion of systematic relationships in the Hyla lancasteri group". Copeia. 1996 (3): 615–626. doi:10.2307/1447525. JSTOR 1447525.
  4. "Isthmohyla calypsa Lips, 1996". Amphibians of Panama. Smithsonian Tropical Research Institute. Retrieved 3 January 2017.
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