Isthmohyla calypsa
family: Hylidae
subfamily: Hylinae

© 2010 Division of Herpetology, University of Kansas (1 of 1)
Conservation Status (definitions)
IUCN (Red List) Status Critically Endangered (CR)
Other International Status IUCN - Critically Endangered
National Status None
Regional Status None


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From the IUCN Red List Species Account:


Range Description

This species is known from the southern Cordillera de Talamanca, on Cerro Pando on the Pacific slope in Costa Rica and Atlantic versant in Panama, and on the Pacific slope in south-western Panama, from 1,810-1,920m asl (Savage 2002).

Habitat and Ecology

It is found along torrential stream courses in primary humid lower montane forest throughout the year. Males are strongly territorial, with small home ranges. Eggs (clutches of 10-36) are deposited on leaf surfaces of low vegetation above streams; hatching tadpoles fall or are washed by rain into the stream below (Savage 2002).


Extensive monitoring has shown that this species has disappeared from its former range. It was formerly locally common in Tablas, Costa Rica, but has disappeared from all known sites since the early 1990s. In 2006, the Costa Rican portion of the species range was surveyed, however the species was not found (Joseph Vargas pers. comm. 2007). There is no information on the population size or abundance of this species in Panama, though this population has probably also declined seriously.

Population Trend


Major Threats

The observed population decline is likely to be due to chytridiomycosis, since it has taken place within pristine habitats. Habitat loss as a result of smallholder livestock farming is also a threat.

Conservation Actions

This species has been recorded in Parque Internacional La Amistad and might occur in Parque Nacional Volcán Barú. Further survey work is required to determine the population status and trends of this species. In view of the threat of chytridiomycosis, ex-situ populations might need to be established.

Taxonomic Notes

This species was previously included in the genus Hyla but has recently been moved to the new genus Isthmohyla (Faivovich et al. 2005).


Bolaños, F., Chaves, G., Solís, F., Ibáñez, R., Savage, J., Jaramillo, C., Fuenmayor, Q. & Vargas, J. 2008. Isthmohyla calypsa. In: IUCN 2014


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