Colostethus argyrogaster 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Dendrobatidae

Scientific Name: Colostethus argyrogaster (Morales & Schulte, 1993)
Common Name(s):
English Imaza Rocket Frog
Colostethus argyrogaster Morales & Schulte, 1993
Hyloxalus argyrogaster (Morales & Schulte, 1993)
Taxonomic Source(s): Frost, D.R. 2017. 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: 2017
Date Assessed: 2017-04-18
Assessor(s): IUCN SSC Amphibian Specialist Group
Reviewer(s): Luedtke, J.
Contributor(s): Angulo, A., Brown, J., Icochea M., J., Martinez, J.L., Jungfer, K., Reynolds, R. & Arizabal, W.
Facilitator/Compiler(s): Hobin, L., Bowles, P.
Listed as Least Concern since, although its extent of occurrence (EOO) is 18,344 km2, it occurs in an area of extensive, suitable habitat which appears not to be under significant threat, and has a presumed large and stable population.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species' geographic range is the northeastern slope of the Andes of Peru, within the Cordillera Central (Departments of Amazonas and San Martin). Its known localities lie within the Río Cainarachi drainage (two sites) and the Río Marañón valley (two sites) (Duellman 2004), and it has an estimated altitudinal range of 400–1,700 m asl (Aguilar et al. 2010). It might occur more widely. Its EOO is 18,344 km2.
Countries occurrence:
Additional data:
Number of Locations:4
Lower elevation limit (metres):400
Upper elevation limit (metres):1700
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:In the Cainrachi area, this species is abundant in both primary and secondary forested areas in both mid and low elevations (J. Brown pers. comm. April 2017). It is considered to be the most abundant Dendrobatid (J. Brown pers. comm. April 2017) and the population is thought to be stable.
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It is a diurnal, terrestrial species known from both humid and dry pre-montane and lowland forest (Duellman 2004), which is associated with streams. It has been recorded from disturbed (partially cutover) rainforest (Duellman 2004), implying tolerance of some degree of habitat modification. Larvae are carried to streams by the female.
Systems:Terrestrial; Freshwater
Movement patterns:Not a Migrant

Use and Trade [top]

Use and Trade: There are no records of this species being utilized. However, Peruvian species of Hyloxalus, in common with other poison dart frogs, may be at risk from smuggling to support the international pet trade (von May et al. 2008).

Threats [top]

Major Threat(s): Because of the large areas of suitable habitat available in protected areas to this species there are no major threats. Outside protected areas, there is some localized habitat loss through different human activities, principally agriculture.

Conservation Actions [top]

Conservation Actions: Conservation Actions
This species occurs within the Santiago Comaina Reserved Zone and the Alto Mayo protected area. No species-specific conservation measures are known. 

Research Needed
More information is needed on EOO, area of occupancy (AOO), population status, natural history and threats.

Classifications [top]

1. Forest -> 1.5. Forest - Subtropical/Tropical Dry
suitability:Suitable season:resident 
1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability:Suitable season:resident 
1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
suitability:Suitable season:resident 
5. Wetlands (inland) -> 5.1. Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)
suitability:Suitable season:resident major importance:Yes

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
In-Place Species Management
In-Place Education
1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats

Bibliography [top]

Aguilar, C., Ramirez, C., Rivera, D., Siu-Ting, K., Suarez, J. and Torres, C. 2010. Anfibios andinos del Perú fuera de Áreas Nationales Protegidas: amenazas y estado de conservación. Revista Peruana de Biología 17(1): 005-028.

Duellman, W.E. 2004. Frogs of the genus Colostethus (Anura; Dendrobatidae) in the Andes of northern Peru. Scientific Papers of the Natural History Museum of the University of Kansas 35: 1-49.

IUCN. 2017. The IUCN Red List of Threatened Species. Version 2017-3. Available at: (Accessed: 5 December 2017).

Morales, V.R. and Schulte, R. 1993. Dos especies nuevas de Colostethus (Anura, Dendrobatidae) en las vertientes de la Cordillera Oriental del Peru y del Ecuador. Alytes 11(3): 97-106.

Rodríguez, L.O., Cordova, J.H. and Icochea, J. 1993. Lista preliminar de los anfibios del Peru. Publicaciones del Museo de Historia Natural U.N.M.S.M. 45: 1-22.

von May, R., Catenazzi, A., Angulo, A., Brown, J.L., Carrillo, J., Chávez, G., Córdova, J.H., Curo, A., Delgado, A., Enciso, M.A., Guttiérez, R., Lehr, E., Martínez, J.L., Martina-Müller, M., Miranda, A., Neira, D.R., Ochoa, J.A., Quiroz, A.J., Rodríguez, D.A., Rodríguez, L.O., Salas, A.W., Seimon, T., Seimon, A., Siu-Ting, K., Suárez, J., Torres, C. and Twomey, E. 2008. Current state of conservation knowledge on threatened amphibian species in Peru. Tropical Conservation Science 1(4): 376-396.

Citation: IUCN SSC Amphibian Specialist Group. 2017. Colostethus argyrogaster. The IUCN Red List of Threatened Species 2017: e.T55047A89198933. . Downloaded on 15 October 2018.
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