CR

Achatinella turgida

Unknown

Overview

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

Achatinella turgida 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 various ant species, have devastated remaining populations through direct predation. 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 mesic and wet forests on Oahu, typically found on native trees and shrubs in cool, moist environments between 300-800 meters elevation. The species requires specific microhabitat conditions with high humidity and stable temperatures provided by intact native forest canopy.

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 turgida classified as Critically Endangered?
Achatinella turgida 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 turgida 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 various ant species, have devastated remaining populations through direct predation. 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 turgida live?
Achatinella turgida 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 turgida?
The main threats to Achatinella turgida 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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