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95. Spine-fingered Treefrog

Charadrahyla trux


The Spine-fingered treefrog appears to have undergone a severe decline, and it has not been recorded in recently attempts to locate it leading to fears that 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 the forest between Filo de Caballo and Atoyac due to the transformation to open agricultural lands and farmlands. 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. The range of this species does not include any protected areas. Additional survey work is required to determine whether or not this species is still extant in its natural range, a programme to protect the forest areas surrounding the Cerro Teótepec is also recommended. This species is listed as “Threatened” (Amenazada) by the Mexican government.

  • 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 slopes of Cerro Teótepec, in the Sierra Madre del Sur, in Guerrero, Mexico, at 1,760-2,415m above sea level.

Habitat and Ecology

This species occurs in pine-oak and bamboo-tree fern forests. It is commonly found associated with cascading mountain streams where it breeds.

Find out more

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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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