CR

Parjacti Treefrog

Hyloscirtus chlorosteus

Declining

Overview

Hyloscirtus chlorosteus is a species of frog in the family Hylidae. It is endemic to Bolivia and only known from the holotype collected in 1979 from Parjacti (=Paracti), on the eastern slopes of the Andes in the Cochabamba Department. The specific name refers to the green bones of this frog. Common name Parjacti treefrog has been coined for it.

Hyloscirtus chlorosteus faces severe population decline primarily due to habitat destruction from agricultural expansion and logging activities in Colombia's cloud forests. The species is particularly vulnerable to chytrid fungal infections, which have devastated amphibian populations throughout the Andean region. Climate change poses an additional threat by altering the temperature and humidity conditions essential for this species' survival in high-altitude environments.

Threat summary

Habitat

This species inhabits cloud forests and montane rainforests at elevations between 1,800-2,400 meters in the Colombian Andes. It requires pristine forest streams with clean, well-oxygenated water for breeding and is typically found near rocky cascades and waterfalls within primary forest habitat.

Forest· major

Conservation measures underway

Species recoveryEx-situ conservation

Other threatened species in HYLIDAE

VU

Maracas Heart-tongued Frog

Phyllodytes tuberculosus

Declining
VU

Papallacta Treefrog

Hyloscirtus psarolaimus

Declining
VU

Scinax rupestris

Unknown
CR

Nyctimantis pomba

Declining

Frequently asked questions

Why is Parjacti Treefrog classified as Critically Endangered?
Parjacti Treefrog 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. Hyloscirtus chlorosteus faces severe population decline primarily due to habitat destruction from agricultural expansion and logging activities in Colombia's cloud forests. The species is particularly vulnerable to chytrid fungal infections, which have devastated amphibian populations throughout the Andean region. Climate change poses an additional threat by altering the temperature and humidity conditions essential for this species' survival in high-altitude environments.
Where does Parjacti Treefrog live?
Parjacti Treefrog 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 Parjacti Treefrog?
The main threats to Parjacti Treefrog are 1.1, 2.1, 3.3, and 4.1. The full IUCN-classified threat record for this species is detailed on the species page.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.