CR

Large-headed Glassfrog

Nymphargus megacheirus

Declining

Overview

Nymphargus megacheirus is a species of frog in the family Centrolenidae, formerly placed in Cochranella. It is found in Colombia and Ecuador. Its natural habitats are subtropical or tropical moist montane forests and rivers. It is threatened by habitat loss.

Nymphargus megacheirus faces severe population decline primarily due to habitat destruction from agricultural expansion and urban development in its limited montane cloud forest range. The species is particularly vulnerable to chytrid fungal infections, which have devastated amphibian populations throughout Central and South America. Climate change poses an additional threat by altering the delicate moisture and temperature conditions required for this glass frog's survival in high-altitude environments.

Threat summary

Habitat

This glass frog inhabits pristine montane cloud forests at elevations between 1,500-2,500 meters, where it depends on the constant moisture and stable temperatures provided by persistent cloud cover. The species requires clean, fast-flowing streams with overhanging vegetation for breeding and is typically found on leaves near water sources in primary forest environments.

Forest· majorForest - Subtropical/tropical moist montane· major

Conservation measures underway

Species recoveryEx-situ conservation

Frequently asked questions

Why is Large-headed Glassfrog classified as Critically Endangered?
Large-headed Glassfrog 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. Nymphargus megacheirus faces severe population decline primarily due to habitat destruction from agricultural expansion and urban development in its limited montane cloud forest range. The species is particularly vulnerable to chytrid fungal infections, which have devastated amphibian populations throughout Central and South America. Climate change poses an additional threat by altering the delicate moisture and temperature conditions required for this glass frog's survival in high-altitude environments.
Where does Large-headed Glassfrog live?
Large-headed Glassfrog occurs in Colombia, and Ecuador. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Large-headed Glassfrog?
The main threats to Large-headed Glassfrog are 1.1, 11.1, 2.1, and 5.3. The full IUCN-classified threat record for this species is detailed on the species page.

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