EN

Newcombia sulcata

Unknown

Overview

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

Newcombia sulcata faces severe habitat degradation from invasive plant species that alter the native forest understory composition essential for this endemic Hawaiian tree snail. Introduced predators, particularly the rosy wolf snail (Euglandina rosea), pose a direct predation threat to remaining populations. Climate change-induced shifts in rainfall patterns and temperature regimes further stress the species' already fragmented montane forest habitat.

Threat summary

Habitat

This endemic Hawaiian tree snail inhabits native montane forests, typically found on native trees and shrubs in mesic to wet forest zones at mid to high elevations. The species requires intact forest canopy and diverse understory vegetation that provides appropriate microhabitat conditions including adequate moisture and leaf litter.

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Frequently asked questions

Why is Newcombia sulcata classified as Endangered?
Newcombia sulcata 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. Newcombia sulcata faces severe habitat degradation from invasive plant species that alter the native forest understory composition essential for this endemic Hawaiian tree snail. Introduced predators, particularly the rosy wolf snail (Euglandina rosea), pose a direct predation threat to remaining populations. Climate change-induced shifts in rainfall patterns and temperature regimes further stress the species' already fragmented montane forest habitat.
Where does Newcombia sulcata live?
Newcombia sulcata 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 Newcombia sulcata?
The main threats to Newcombia sulcata 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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