Eleutherodactylus karlschmidti

Subgenus: Eleutherodactylus
family: Eleutherodactylidae
subfamily: Eleutherodactylinae
Conservation Status (definitions)
IUCN (Red List) Status Critically Endangered (CR)
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: Puerto Rico


View distribution map using BerkeleyMapper.


From the IUCN Red List Species Account:


Range Description

This species is known from eastern Puerto Rico as well as the western mountains, at an altitudinal range of 45-630 m asl.

Habitat and Ecology

It is an aquatic species, restricted to mountain streams, with a preference for rocky torrents in closed mesic forest. It is known to call from boulders, banks, and waterfalls, and to breed by direct development.


Formerly known to be abundant in eastern Puerto Rico as well as the western mountains, it has not been seen since 1976 or 1988 (Hedges and Díaz 2009). Habitats where it once occurred have been surveyed repeatedly by experts at different times of year (including the rainy season), without success, and it is now considered to be almost certainly extinct.

Population Trend


Major Threats

The main cause of the decline of this species appears to be related to the synergistic effects of chytridiomycosis and climate change, although invasive predators might also have had an impact.

Conservation Actions

This species formerly occurred in El Yunque National Forest, but it has not been recorded recently from this area. Further survey work is required to determine the population status of this species and whether or not it survives in the wild. In view of the risk of chytridiomycosis, any surviving individuals might need to form the basis for the establishment of an ex-situ population.

Red List Status

Critically Endangered (CR)


Listed as Critically Endangered because of a drastic population decline, estimated to be more than 80% over the last three generations, inferred from the apparent disappearance of most of the population, perhaps due to climate change and/or chytridiomycosis.


Blair Hedges, Rafael Joglar, Richard Thomas 2010. Eleutherodactylus karlschmidti. The IUCN Red List of Threatened Species 2010: e.T7146A12830790. .Downloaded on 23 January 2019


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