Isthmohyla zeteki 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Hylidae

Scientific Name: Isthmohyla zeteki
Species Authority: (Gaige, 1929)
Common Name(s):
English Zetek's Treefrog
Hyla zeteki Gaige, 1929
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:
Taxonomic Notes: This species was previously included in the genus Hyla but has recently been moved to the new genus Isthmohyla (Faivovich et al. 2005).

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2008
Date Assessed: 2008-01-01
Assessor(s): Solís, F., Ibáñez, R., Chaves, G., Savage, J., Jaramillo, C., Fuenmayor, Q., Bolaños, F. & Lips, K.
Reviewer(s): Stuart, S.N., Chanson, J.S., Cox, N.A. & Young, B.E.
Listed as Near Threatened because although the species appears not to be in decline, its Extent of Occurrence is less than 3000 km2, thus making the species close to qualifying for Vulnerable. The habitat does not seem to be severely fragmented, and it is likely to be present at more than ten locations.
Previously published Red List assessments:
2004 Near Threatened (NT)

Geographic Range [top]

Range Description: This species can be found in humid premontane areas or marginally in the lower montane zone of the Cordillera Central and Cordillera de Talamanca of Costa Rica and western Panama, from 1,200-1,804m asl (Savage 2002).
Countries occurrence:
Costa Rica; Panama
Lower elevation limit (metres): 1200
Upper elevation limit (metres): 1804
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The available evidence suggests that Costa Rican populations are apparently stable in suitable habitat, and have not had the confirmed declines exhibited in many other montane species (Federico Bolaños pers. comm.), (although this observation may be linked to the difficulty in recording densities of this canopy species, Karen Lips pers. comm, 2007). As of 2007, there is little new information on the status of Panamanian populations (Roberto Ibáñez pers. comm., 2007).
Current Population Trend: Decreasing
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: It inhabits bromeliads in humid montane forest. Breeding and larval development takes place in the bromeliads (phytotelmic species), with eggs laid on the outside leaves above the waterline in the bromeliad cups (Savage 2002). Populations can persist outside of forest where suitable trees with bromeliads remain, for instance within some pastures (Federico Bolaños pers. comm.).
Systems: Terrestrial

Threats [top]

Major Threat(s): The threats to this species are not well known, but in Panama they likely include general habitat loss as a result of logging, human settlement, and some agricultural activities. There are no threats to this species in Costa Rica.

Conservation Actions [top]

Conservation Actions: This species is known from a number of protected areas, including Parque Nacional Braulio Carrillo.

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability: Suitable  
2. Land/water management -> 2.1. Site/area management

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Conservation sites identified:Yes, over entire range
  Occur in at least one PA:Yes
In-Place Species Management
In-Place Education
1. Residential & commercial development -> 1.1. Housing & urban areas
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.2. Small-holder farming
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.5. Motivation Unknown/Unrecorded
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats
1. Research -> 1.6. Actions
3. Monitoring -> 3.1. Population trends

Bibliography [top]

Duellman, W.E. 2001. The Hylid Frogs of Middle America. Society for the Study of Amphibians and Reptiles, Ithaca, New York, USA.

Dunn, E.R. 1937. The amphibian and reptilian fauna of bromeliads in Costa Rica and Panama. Copeia: 163-67.

Faivovich, J., Haddad, C.F.B., Garcia, P.C.O., Frost, D.R., Campbell, J.A. and Wheeler, W.C. 2005. Systematic review of the frog family Hylidae, with special reference to Hylinae: Phylogenetic analysis and taxonomic revision. Bulletin of the American Museum of Natural History 294: 1-240.

Ibáñez, R., Solís, F., Jaramillo, C. and Rand, S. 2000. An overwiew of the herpetology of Panama. In: J.D. Johnson, R.G. Webb and O.A. Flores-Villela (eds), Mesoamerican Herpetology: Systematics, Zoogeography and Conservation, pp. 159-170. The University of Texas at El Paso, El Paso, Texas.

IUCN. 2008. 2008 IUCN Red List of Threatened Species. Available at: (Accessed: 5 October 2008).

Savage, J.M. 2002. The Amphibians and Reptiles of Costa Rica: A Herpetofauna between two Continents, between two Seas. University of Chicago Press, Chicago.

Young, B., Sedaghatkish, G., Roca, E. and Fuenmayor, Q. 1999. El Estatus de la Conservación de la Herpetofauna de Panamá: Resumen del Primer Taller Internacional sobre la Herpetofauna de Panamá. The Nature Conservancy, Arlington, Virginia.

Citation: Solís, F., Ibáñez, R., Chaves, G., Savage, J., Jaramillo, C., Fuenmayor, Q., Bolaños, F. & Lips, K. 2008. Isthmohyla zeteki. The IUCN Red List of Threatened Species 2008: e.T55701A11351517. . Downloaded on 02 December 2015.
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