Ctenophryne aterrima 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Microhylidae

Scientific Name: Ctenophryne aterrima (Günther, 1901)
Common Name(s):
English Costa Rica Nelson Frog
Glossostoma aterrimum Günther, 1901
Nelsonophryne aterrima (Günther, 1901)
Taxonomic Source(s): Frost, D.R. 2018. Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History, New York, USA Available at:

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-01-01
Assessor(s): Solís, F., Ibáñez, R., Chaves, G., Savage, J., Jaramillo, C., Fuenmayor, Q., Bolívar, W., Grant, T., Almendáriz, A. & Bolaños, F.
Reviewer(s): Stuart, S.N., Chanson, J.S., Cox, N.A. & Young, B.E.
Listed as Least Concern in view of its wide distribution, tolerance of a degree of habitat modification, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species occurs in lowland and premontane zones from Costa Rica and Panama to montane Colombia and northwestern Ecuador. In Costa Rica it is found primarily on the lower Atlantic slopes of the cordilleras, and in the lowlands and on the slopes of the southwestern region. In Colombia, it occurs in the Pacific lowlands, on the lower western slopes of the Cordillera Occidental, and around the northern edge of the Cordillera Occidental and Cordillera Central to the Middle Magdalena Valley. It occurs from near sea level up to 1,600m asl.
Countries occurrence:
Colombia; Costa Rica; Ecuador; Panama
Additional data:
Upper elevation limit (metres):1600
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It is rarely found, probably largely due to its secretive habits.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It is a secretive, nocturnal leaf-litter species of humid lowland, montane forest, including secondary forest and areas close to these forests. Adults are generally found under fallen logs and other surface debris. Breeding takes place in swamps and shallow water-filled depressions on the forest floor.
Systems:Terrestrial; Freshwater

Threats [top]

Major Threat(s): The major threats are likely to be deforestation for agricultural development, plantations, illegal crops, logging, and human settlement, and pollution resulting from the spraying of illegal crops.

Conservation Actions [top]

Conservation Actions: It occurs in many protected areas.

Citation: Solís, F., Ibáñez, R., Chaves, G., Savage, J., Jaramillo, C., Fuenmayor, Q., Bolívar, W., Grant, T., Almendáriz, A. & Bolaños, F. 2008. Ctenophryne aterrima. The IUCN Red List of Threatened Species 2008: e.T57900A11697070. . Downloaded on 16 July 2018.
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