Nymphargus anomalus


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Nymphargus anomalus
Species Authority: (Lynch & Duellman, 1973)
Common Name(s):
English Napo Cochran Frog
Centrolenella anomala Lynch & Duellman, 1973
Cochranella anomala (Lynch & Duellman, 1973)
Nymphargus anomala (Lynch & Duellman, 1973)

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B2ab(iii) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Assessor(s): Luis A. Coloma, Santiago Ron
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Listed as Critically Endangered because its Area of Occupancy is probably less than 10km2, its distribution is probably severely fragmented, and the extent of its forest habitat in northern Ecuador is probably declining.

Geographic Range [top]

Range Description: This species is known only from the type locality: Río Azuela, Napo Province, in northern Ecuador, at 1,740m asl. It is likely to occur a little more widely, but surveys elsewhere have not recorded it, and so its distribution is unlikely to be extensive.
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It has not been seen since its original discovery (one individual) in 1971. A few return visits to the type locality have not recorded it.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: It lives in cloud forest. The holotype was found on a mossy limb of a bush about 1.5m above a cascading rivulet at night (Lynch and Duellman 1973). Its breeding is unknown, but is likely to take place in streams.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): At the type locality, patches of forest have been cleared for agriculture and livestock farming.

Conservation Actions [top]

Conservation Actions: The distribution range of this species appears to overlap with Reserva Ecológica Cayambe-Coca. Survey work is required to determine the population status of this species and to ascertain the limits of its range.

Citation: Luis A. Coloma, Santiago Ron 2004. Nymphargus anomalus. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 31 March 2015.
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