This species is known from both slopes of the western Andes, between Cauca and Risaralda Departments, in Colombia. It has been recorded between 2,100–2,600 m asl (W. Bolívar pers comm. August 2016). Its EOO is 5,343 km2 which is thought to be divided into fewer than five threat-defined locations.
Habitat and Ecology
This species occurs on vegetation next to streams in sub-Andean forests. It is restricted to gallery forest due to its requirement for overhanging branches for breeding habitat. It lays its eggs on leaves above the water and, when hatched, the tadpoles drop into the stream below where they develop further.
It is an uncommon species which was last recorded in 2011 (D. Gómez and W. Bolívar pers comm. August 2016). Due to ongoing decline in the extent and quality of habitat, the population is suspected to be decreasing.
The major threats are habitat loss, due to agricultural development (including the planting of illegal crops), mining activities and logging, that occurs throughout its range.
Conservation ActionsThe range of the species includes several protected areas.
Additional habitat protection is required.
Further research in population trends, ecology, distribution and threats are recommended for the species.
Red List Status
Listed as Vulnerable because its extent of occurrence (EOO) is 5,343 km2, it occurs in fewer than five threat-defined locations, and there is continuing decline in the extent and quality of its habitat due to agricultural development (including the planting of illegal crops), mining activities and logging.
IUCN SSC Amphibian Specialist Group 2017. Nymphargus ruizi. The IUCN Red List of Threatened Species 2017: e.T54989A85874200. http://dx.doi.org/10.2305/IUCN.UK.2017-3.RLTS.T54989A85874200.en .Downloaded on 19 January 2019