EN

Partulina tappaniana

Unknown

Overview

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

Partulina tappaniana faces severe population decline primarily due to predation by introduced species, particularly the carnivorous snail Euglandina rosea and various flatworms that systematically hunt native Hawaiian tree snails. Habitat degradation from invasive plant species and feral ungulates has further reduced suitable forest environments. The species' extremely limited range on Oahu makes it particularly vulnerable to localized extinction events, with remaining populations confined to increasingly fragmented native forest patches.

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 environments at elevations between 300-800 meters. The species requires intact native vegetation communities with adequate moisture and appropriate host plants for feeding and reproduction.

Other threatened species in ACHATINELLIDAE

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Elasmias kitaiwojimanum

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Achatinella cestus

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Achatinella swiftii

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CR

Achatinella leucorrhaphe

Unknown

Frequently asked questions

Why is Partulina tappaniana classified as Endangered?
Partulina tappaniana is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Partulina tappaniana faces severe population decline primarily due to predation by introduced species, particularly the carnivorous snail Euglandina rosea and various flatworms that systematically hunt native Hawaiian tree snails. Habitat degradation from invasive plant species and feral ungulates has further reduced suitable forest environments. The species' extremely limited range on Oahu makes it particularly vulnerable to localized extinction events, with remaining populations confined to increasingly fragmented native forest patches.
Where does Partulina tappaniana live?
Partulina tappaniana 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 tappaniana?
The main threats to Partulina tappaniana 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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