EN

Hirasea chichijimana

Unknown

Overview

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

Hirasea chichijimana faces severe pressure from invasive species, particularly the introduced flatworm Platydemus manokwari, which preys directly on native land snails. Habitat degradation from introduced plants and human development on Chichijima Island has reduced available forest refugia. The species' extremely limited range on a single small oceanic island makes it exceptionally vulnerable to stochastic events and environmental changes.

Threat summary

Habitat

This endemic land snail inhabits the native forest remnants of Chichijima Island in the Ogasawara Islands, Japan. It requires moist, shaded environments with leaf litter and decaying organic matter typical of subtropical oceanic island forests.

Other threatened species in ENDODONTIDAE

CR

Endodonta apiculata

Unknown
CR

Thaumatodon corrugata

Unknown
VU

Thaumatodon laddi

Unknown
VU

Zyzzyxdonta alata

Unknown

Frequently asked questions

Why is Hirasea chichijimana classified as Endangered?
Hirasea chichijimana 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. Hirasea chichijimana faces severe pressure from invasive species, particularly the introduced flatworm Platydemus manokwari, which preys directly on native land snails. Habitat degradation from introduced plants and human development on Chichijima Island has reduced available forest refugia. The species' extremely limited range on a single small oceanic island makes it exceptionally vulnerable to stochastic events and environmental changes.
Where does Hirasea chichijimana live?
Hirasea chichijimana 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 Hirasea chichijimana?
The main threats to Hirasea chichijimana 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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