CR

Achatinella lila

Unknown

Overview

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

Achatinella lila faces severe population decline primarily due to habitat destruction from urban development and invasive plant species that alter the native forest composition. Introduced predators, particularly the rosy wolf snail (Euglandina rosea), pose a direct threat to remaining populations through predation. Climate change exacerbates these pressures by shifting suitable habitat zones upslope, reducing available range for this endemic Hawaiian species.

Threat summary

Habitat

This endemic Hawaiian tree snail inhabits native montane forests on Oahu, typically found on native trees and shrubs in mesic to wet forest zones. The species requires intact native vegetation communities with appropriate moisture levels and canopy cover for survival.

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 lila classified as Critically Endangered?
Achatinella lila 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 lila faces severe population decline primarily due to habitat destruction from urban development and invasive plant species that alter the native forest composition. Introduced predators, particularly the rosy wolf snail (Euglandina rosea), pose a direct threat to remaining populations through predation. Climate change exacerbates these pressures by shifting suitable habitat zones upslope, reducing available range for this endemic Hawaiian species.
Where does Achatinella lila live?
Achatinella lila 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 lila?
The main threats to Achatinella lila 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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