CR

Warty Mountain Stream Frog

Quilticohyla acrochorda

Declining

Overview

Quilticohyla acrochorda, commonly known as the warty mountain stream frog, is a species of frogs in the family Hylidae. It is endemic to Mexico and known from the Atlantic slopes of the Sierra Juárez in Oaxaca. Before being described as a new species in 2000, it was mixed with Ptychohyla erythromma. The specific name acrochorda is a Greek word for "wart" and refers to the distinctive white warts on the posterior surface of the thigh of this frog.

Quilticohyla acrochorda faces severe population decline due to the devastating chytrid fungus Batrachochytrium dendrobatidis, which has caused widespread amphibian mortality throughout Central American cloud forests. Habitat destruction from agricultural expansion and coffee cultivation in its montane forest range has further fragmented remaining populations. Climate change poses an additional threat by altering the cool, humid microclimate conditions essential for this species' survival in high-elevation environments.

Threat summary

Habitat

This species inhabits montane cloud forests and pine-oak forests at elevations between 1,200-2,400 meters in the mountains of Guatemala and southern Mexico. It requires cool, humid microhabitats with persistent moisture, typically found in pristine forest areas with dense canopy cover.

Forest· majorForest - Subtropical/tropical moist montane· major

Conservation measures underway

Site/area protectionResource & habitat protectionSpecies recovery

Other threatened species in HYLIDAE

VU

Maracas Heart-tongued Frog

Phyllodytes tuberculosus

Declining
VU

Papallacta Treefrog

Hyloscirtus psarolaimus

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VU

Scinax rupestris

Unknown
CR

Nyctimantis pomba

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Threatened in Mexico

EN

Turbinicarpus horripilus

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CR

Turbinicarpus mandragora

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EN

Opuntia pachyrrhiza

Declining
EN

Arachnothryx tacanensis

Declining

Frequently asked questions

Why is Warty Mountain Stream Frog classified as Critically Endangered?
Warty Mountain Stream Frog is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Quilticohyla acrochorda faces severe population decline due to the devastating chytrid fungus Batrachochytrium dendrobatidis, which has caused widespread amphibian mortality throughout Central American cloud forests. Habitat destruction from agricultural expansion and coffee cultivation in its montane forest range has further fragmented remaining populations. Climate change poses an additional threat by altering the cool, humid microclimate conditions essential for this species' survival in high-elevation environments.
Where does Warty Mountain Stream Frog live?
Warty Mountain Stream Frog occurs in Mexico. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Warty Mountain Stream Frog?
The main threats to Warty Mountain Stream Frog are 1.1, 2.1, 8.1, and 9.3.4. The full IUCN-classified threat record for this species is detailed on the species page.

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