Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Dendrobatidae

Scientific Name: Hyloxalus ruizi
Species Authority: (Lynch, 1982)
Common Name(s):
English Ruiz's Rocket Frog
Colostethus ruizi Lynch, 1982
Taxonomic Source(s): Frost, D.R. 2014. Amphibian Species of the World: an Online Reference. Version 6 (27 January 2014). New York, USA. Available at: (Accessed: 27 January 2014).

Assessment Information [top]

Red List Category & Criteria: Critically Endangered (Possibly Extinct) B1ab(iii,v)+2ab(iii,v) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Needs updating
Assessor(s): Wilmar Bolívar, Jose Vicente Rueda
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Listed as Critically Endangered because its Extent of Occurrence is less than 100 km2 and its Area Of Occupancy is less than 10km2, all individuals are in a single location, and there is continuing decline in the extent and quality of its habitat, and in the number of mature individuals.

Geographic Range [top]

Range Description: This species is known from Fusagasuga, between Alto de San Miguel and Aguadita, on the western flank of the eastern Andes, Cundinamarca Department, Colombia, between 2,410 and 2,469m asl.
Countries occurrence:
Possibly extinct:
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is rare, and is known from only six individuals. Its range has been completely deforested, except for one private tract of land 11ha in size. Four expeditions since 1995 have failed to turn up any individuals of this species.
Current Population Trend: Decreasing
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: It lives on the forest floor and along streams in cloud forest; it is not found outside old-growth forest. Its breeding habits are not documented, but it is assumed that breeding and larval development take place in streams.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): Deforestation for the planting of crops and cattle grazing is the primary threat to this species.

Conservation Actions [top]

Conservation Actions: The species is not known to occur in any protected areas. Surveys are urgently needed to determine whether or not this species still persists in the wild.

Citation: Wilmar Bolívar, Jose Vicente Rueda. 2004. Hyloxalus ruizi. The IUCN Red List of Threatened Species 2004: e.T55143A11260296. . Downloaded on 06 October 2015.
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