CR

Achatinella phaeozona

Unknown

Overview

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

Achatinella phaeozona faces severe population decline primarily due to habitat destruction from urban development and invasive plant species that alter native forest composition. Introduced predators, particularly the rosy wolf snail (Euglandina rosea) and rats, have devastated populations by directly consuming individuals and eggs. Climate change compounds these pressures by shifting rainfall patterns and temperature ranges that affect the cool, moist microhabitats essential for this species' survival.

Threat summary

Habitat

This endemic Hawaiian tree snail inhabits native montane forests on Oahu, particularly in cool, moist areas with dense canopy cover between 300-600 meters elevation. It requires specific microhabitat conditions including high humidity, stable temperatures, and native vegetation for both shelter and the fungal food sources it grazes from leaf surfaces.

TERRESTRIAL· major

Other threatened species in ACHATINELLIDAE

VU

Lamellidea biplicata

Unknown
VU

Lamellidea ogasawarana

Unknown
EN

Newcombia lirata

Unknown
EN

Newcombia canaliculata

Unknown

Frequently asked questions

Why is Achatinella phaeozona classified as Critically Endangered?
Achatinella phaeozona 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. Achatinella phaeozona faces severe population decline primarily due to habitat destruction from urban development and invasive plant species that alter native forest composition. Introduced predators, particularly the rosy wolf snail (Euglandina rosea) and rats, have devastated populations by directly consuming individuals and eggs. Climate change compounds these pressures by shifting rainfall patterns and temperature ranges that affect the cool, moist microhabitats essential for this species' survival.
Where does Achatinella phaeozona live?
Achatinella phaeozona 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 Achatinella phaeozona?
The main threats to Achatinella phaeozona are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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