Nymphargus posadae 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Centrolenidae

Scientific Name: Nymphargus posadae
Species Authority: (Ruíz-Carranza & Lynch, 1995)
Cochranella posadae Ruíz-Carranza & Lynch, 1995
Taxonomic Source(s): Frost, D.R. 2013. Amphibian Species of the World: an Online Reference. Version 5.6 (9 January 2013). Electronic Database. American Museum of Natural History, New York, USA. Available at:

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii) ver 3.1
Year Published: 2008
Date Assessed: 2008-01-01
Assessor(s): Juan Manuel Guayasamin
Reviewer(s): Ariadne Angulo and Simon Stuart
Listed as Vulnerable because its Extent of Occurrence is less than 20,000 km2, its distribution is severely fragmented, and there is continuing decline in the extent and quality of its forest habitat in the Central Cordillera of Colombia.
Previously published Red List assessments:
2004 Vulnerable (VU)

Geographic Range [top]

Range Description: This species is known from Caldas (Samaná), Cauca (Inza) and Huila (San Jose Isnos) departments on the eastern flank of the Cordillera Central in Colombia, between 1100 and 2800 masl. It is also known from the cloud forests surrounding Yanayacu Biological Station (0 41′ S, 77 53′ W; 2100 m) in Ecuador (Guayasamin et al., 2006).
Countries occurrence:
Colombia; Ecuador (Ecuador (mainland))
Lower elevation limit (metres): 1100
Upper elevation limit (metres): 2800
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: In Ecuador, three individuals were collected during 3 years of inventory work, so it appears to be extremely rare here (J.M. Guayasamin, pers. comm. 2008). It appears to be a more common species in Colombia.
Current Population Trend: Decreasing
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: It occurs in sub-Andean and Andean forests, on vegetation alongside streams. Eggs are laid on leaves over-hanging water and when they hatch the tadpoles drop into the water below where they develop further. They require gallery forest to lay their eggs, and hence are sensitive to any disturbance of their forest habitat.

Calling activity has been reported for the month of June (Guayasamin et al., 2006). The species requires of a permanent source of water for its reproduction (J.M. Guayasamin, pers. comm. 2008).
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): Threats to this species include habitat fragmentation and loss, due to the expansion of agriculture (including the planting of illegal crops) and timber extraction, and water pollution.

Conservation Actions [top]

Conservation Actions: The range of the species in Colombia does not include any protected areas, and there is a need for improved habitat protection of sites where this species is known to occur. In Ecuador the species is found at Yanayacu Biological Station.

Citation: Juan Manuel Guayasamin. 2008. Nymphargus posadae. The IUCN Red List of Threatened Species 2008: e.T54981A11222880. . Downloaded on 29 November 2015.
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