Cusco Triangular-headed Frog
Hemiphractus helioi
Hemiphractus helioi is a species of frog in the family Hemiphractidae. It is found in the upper Amazon basin and lower Amazonian slopes of the Andes from Ecuador to southern Peru and into adjacent Brazil (Acre).
2
Countries
Photo: iNaturalist: (c) acatenazzi, some rights reserved (CC BY-NC), uploaded by acatenazzi
Taxonomy & Classification
Kingdom
Animalia
Phylum
Chordata
Class
Amphibia
Order
Anura
Family
Hemiphractidae
Genus
Hemiphractus
Cusco Triangular-headed Frog belongs to the family Hemiphractidae, order Anura, within the Amphibia class.
Species Profile
Hemiphractus helioi is a species of frog in the family Hemiphractidae. It is found in the upper Amazon basin and lower Amazonian slopes of the Andes from Ecuador to southern Peru and into adjacent Brazil (Acre). There is also a disputed record from northern Bolivia. Prior to its formal description in 2001, it was confused with Hemiphractus johnsoni. Its natural habitats are primary tropical rainforest and montane cloud forest. It is an uncommon or even rare species, but no major threats have been identified; habitat loss can be a localized threat.
The Cusco Triangular-headed Frog faces severe threats from habitat destruction due to agricultural expansion and deforestation in its limited montane cloud forest range in Peru. Climate change poses an additional significant threat by altering the specific temperature and humidity conditions this species requires in its high-altitude habitat. The species' extremely restricted range and small population size make it particularly vulnerable to any environmental changes or human disturbances.
Key Facts
Threats
IUCN Red List: Critically Endangered
The Cusco Triangular-headed Frog faces severe threats from habitat destruction due to agricultural expansion and deforestation in its limited montane cloud forest range in Peru. Climate change poses an additional significant threat by altering the specific temperature and humidity conditions this species requires in its high-altitude habitat. The species' extremely restricted range and small population size make it particularly vulnerable to any environmental changes or human disturbances.
Climate change impacts on montane ecosystems
Deforestation and forest degradation
Extremely small population size
Habitat loss from agricultural expansion
Limited geographic range
Community Sightings
Report a sightingNo community sightings yet. Be the first to report!
Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
This page: SpeciesRadar (2025). Cusco Triangular-headed Frog (Hemiphractus helioi). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/cusco-triangular-headed-frog