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Yellowbelly Voiceless Treefrog

Charadrahyla altipotens


The yellowbelly voiceless treefrog has not been recorded since the 1960s.

This species is listed as Critically Endangered because of a drastic population decline, estimated to be more than 80% over the last three generations. Recent surveys to locate it have been unsuccessful and it is feared this species is extinct. The most likely reason this species has had such a large decline is the effect of the Chytrid fungus disease. Moreover, there is continuous habitat degradation of cloud forest in Oaxaca, particularly due to the pressure on the forests from human population growth. The range of this species does not include any protected areas. They are part of the Hylidae or “Treefrogs” families, which have a fossil record going back to the Palaeocene (65 to 53 million years ago), suggesting the Hylid frog lineages originated either in the late Cretaceous or early in the Cenozoic period, around the time of the extinction of the dinosaurs. The Treefrogs diverged from all other amphibians around 50 million years ago, which makes them as distinct from their closest relatives as chinchillas are from porcupines. Additional survey work is required to determine whether or not this species is still extant in its natural range, protection of the remaining cloud forest fragments is important to preserve the humid habitats for this species.

  • Order: Anura
  • Family: Hylidae
  • Population: Possibly extinct
  • Trend: decreasing

EDGE Score

EDGE Score: 5.87 (?)
ED Score: 21.23 (?)
GE / IUCN Red List (?)
Not Evaluated Data Deficient Least Concern Near Threatened Vulnerable Endangered Critically Endangered Extinct in the Wild Extinct


This species is only known from the Pacific slopes of the Sierra Madre del Sur de Oaxaca and north to the towns of San Gabriel and San Sebastián, in south-western Oaxaca, Mexico.

Habitat and Ecology

This species occurs in pine-oak and cloud forests, and prefers rocky streams with abundant vegetation as a microhabitat

Find out more

This wordcloud illustrates the threats facing this species. The size of each word indicates the extent of a species range that is affected by that threat (larger size means a greater area is affected). The colour of the word indicates how much that threat impacts the species (darker shades of red mean the threat is more severe).

Urban development Crops Logging Invasive species

Threat wordcloud key:

Small area affected
Large area affected
Least severe
Most severe
Severity unknown
Source: The IUCN List of Threatened Species. Version 2017.1.
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