CR

Vanzolini's Tree Toad

Hylodes vanzolinii

Unknown

Overview

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

Hylodes vanzolinii faces severe threats from habitat destruction due to urban expansion and agricultural development in its restricted range within the Atlantic Forest of southeastern Brazil. The species' dependence on pristine rocky streams makes it particularly vulnerable to water pollution and sedimentation from nearby human activities. Climate change poses an additional threat by altering precipitation patterns and stream flow regimes essential for this torrent frog's survival.

Threat summary

Habitat

This species inhabits rocky streams and adjacent riparian vegetation within the Atlantic Forest biome of southeastern Brazil. It requires clean, fast-flowing water with rocky substrates and is typically found in areas with dense forest canopy cover.

Forest· majorForest - Subtropical/tropical moist lowland· major

Conservation measures underway

Species managementSpecies recoveryEx-situ conservation

Other threatened species in HYLODIDAE

VU

Ornate Tree Toad

Hylodes ornatus

Unknown
CR

Crossodactylus franciscanus

Unknown
EN

Crossodactylus timbuhy

Unknown
VU

Crossodactylus werneri

Declining

Threatened in Brazil

Calidris ferrugineaVU

Calidris ferruginea

Declining
Columbina cyanopisCR

Columbina cyanopis

Declining
Artichoke CoralCR

Artichoke Coral

Scolymia cubensis

Declining
VU

Mussismilia hispida

Declining

Frequently asked questions

Why is Vanzolini's Tree Toad classified as Critically Endangered?
Vanzolini's Tree Toad 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. Hylodes vanzolinii faces severe threats from habitat destruction due to urban expansion and agricultural development in its restricted range within the Atlantic Forest of southeastern Brazil. The species' dependence on pristine rocky streams makes it particularly vulnerable to water pollution and sedimentation from nearby human activities. Climate change poses an additional threat by altering precipitation patterns and stream flow regimes essential for this torrent frog's survival.
Where does Vanzolini's Tree Toad live?
Vanzolini's Tree Toad occurs in Brazil. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Vanzolini's Tree Toad?
The main threats to Vanzolini's Tree Toad are 5.3, 8.1, ai-1, and ai-2. The full IUCN-classified threat record for this species is detailed on the species page.

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