Hyloxalus edwardsi


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Hyloxalus edwardsi
Species Authority: (Lynch, 1982)
Common Name(s):
English Edwards' Rocket Frog
Colostethus edwardsi Lynch, 1982

Assessment Information [top]

Red List Category & Criteria: Critically Endangered A2ac; B1ab(iii,iv,v)+2ab(iii,iv,v) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Assessor(s): Jose Vicente Rueda
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Listed as Critically Endangered because of a drastic population decline, estimated to be more than 80% over the last ten years, inferred from the apparent disappearance of most, or all, of the population; and because its Extent of Occurrence is less than 100 km2, and its Area of Occupancy is less than 10 km2, its distribution is severely fragmented, and there is continuing decline in the extent and quality of its habitat, in the number of sub-populations, and in the number of mature individuals.

Geographic Range [top]

Range Description: This species is known from two localities in the Cordillera Oriental, La Cueva de las Moyas and the Páramo de Cruz Verde, Cundinamarca Department, Colombia, between 3,030 and 3,300m asl.
Possibly extinct:
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It was last seen in 1996. Three visits to the type locality have failed to turn up this species, and it is likely that it has declined severely due to complete habitat alteration.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: It occurs in streams within caves and crevices. Breeding and larval development takes place in streams.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): It is threatened by habitat loss due to conversion to timber forestry and water pollution caused by urban runoff.

Conservation Actions [top]

Conservation Actions: The species is not known to occur in any protected areas. Surveys are needed to determine the current population status of the species.

Citation: Jose Vicente Rueda 2004. Hyloxalus edwardsi. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 29 March 2015.
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