CR

Partulina dubia

Unknown

Overview

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

Partulina dubia faces severe threats from invasive predatory species, particularly the rosy wolf snail (Euglandina rosea) and various flatworms that actively hunt native Hawaiian tree snails. Habitat degradation from feral ungulates and invasive plant species has further reduced suitable forest environments. The species' extremely limited range and small population size make it highly vulnerable to stochastic events and local extinctions.

Threat summary

Habitat

Partulina dubia inhabits native montane forests on the Hawaiian island of Oahu, typically found on native trees and shrubs in mesic to wet forest zones. The species requires intact forest canopy and native vegetation for both shelter and the fungal food sources that grow on decaying plant matter.

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 Partulina dubia classified as Critically Endangered?
Partulina dubia 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. Partulina dubia faces severe threats from invasive predatory species, particularly the rosy wolf snail (Euglandina rosea) and various flatworms that actively hunt native Hawaiian tree snails. Habitat degradation from feral ungulates and invasive plant species has further reduced suitable forest environments. The species' extremely limited range and small population size make it highly vulnerable to stochastic events and local extinctions.
Where does Partulina dubia live?
Partulina dubia 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 Partulina dubia?
The main threats to Partulina dubia 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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