CR

Wiley's Glassfrog

Nymphargus wileyi

Declining

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Nymphargus wileyi faces severe threats from habitat destruction due to agricultural expansion and cattle ranching in its limited montane cloud forest range. The species' extremely restricted distribution makes it particularly vulnerable to localized environmental changes, while climate change poses additional risks by altering the delicate moisture conditions essential for cloud forest ecosystems. Water pollution from agricultural runoff and pesticide use further threatens both adult frogs and their aquatic larval stages.

Threat summary

Habitat

This glass frog inhabits pristine montane cloud forests at elevations between 1,800-2,400 meters in the Cordillera Oriental of Colombia. It requires the constant moisture and stable temperatures provided by cloud forest environments, typically found near streams and water bodies within these high-altitude ecosystems.

Conservation measures underway

Species recovery

Other threatened species in CENTROLENIDAE

EN

Medem's Glassfrog

Centrolene medemi

Declining
VU

Sachatamia punctulata

Declining
Centrolene quindianumVU

Centrolene quindianum

Declining
VU

Western Cochran Frog

Rulyrana adiazeta

Declining

Frequently asked questions

Why is Wiley's Glassfrog classified as Critically Endangered?
Wiley's 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 wileyi faces severe threats from habitat destruction due to agricultural expansion and cattle ranching in its limited montane cloud forest range. The species' extremely restricted distribution makes it particularly vulnerable to localized environmental changes, while climate change poses additional risks by altering the delicate moisture conditions essential for cloud forest ecosystems. Water pollution from agricultural runoff and pesticide use further threatens both adult frogs and their aquatic larval stages.
Where does Wiley's Glassfrog live?
Wiley's Glassfrog occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Wiley's Glassfrog?
The main threats to Wiley's Glassfrog are 2.1, 2.3, 5.3, and ai-1. The full IUCN-classified threat record for this species is detailed on the species page.

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