Ogasawarana rex
CR

Ogasawarana rex

Unknown

Photo: Pilsbry, 1902, no known copyright restrictions (public domain)

Overview

Ogasawarana rex is a species of land snail with an operculum, a terrestrial gastropod mollusk in the family Helicinidae, the helicinids.

Ogasawarana rex faces severe threats from habitat destruction caused by invasive plant species, particularly the aggressive spread of non-native vegetation that has transformed the native forest understory of the Ogasawara Islands. The species' extremely limited range makes it highly vulnerable to local extinctions, while introduced predators such as flatworms and other invasive invertebrates pose direct predation pressure on this endemic land snail.

Threat summary

Habitat

This endemic land snail inhabits the native subtropical forests of the Ogasawara Islands, particularly in leaf litter and understory vegetation of undisturbed forest areas. The species requires specific microhabitat conditions found only in the remaining patches of native forest ecosystem on these remote Pacific islands.

Other threatened species in HELICINIDAE

CR

Ogasawarana metamorpha

Unknown
EN

Helicina rostrata

Unknown
CR

Ogasawarana habei

Unknown
CR

Ogasawarana yoshiwarana

Unknown

Frequently asked questions

Why is Ogasawarana rex classified as Critically Endangered?
Ogasawarana rex 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. Ogasawarana rex faces severe threats from habitat destruction caused by invasive plant species, particularly the aggressive spread of non-native vegetation that has transformed the native forest understory of the Ogasawara Islands. The species' extremely limited range makes it highly vulnerable to local extinctions, while introduced predators such as flatworms and other invasive invertebrates pose direct predation pressure on this endemic land snail.
Where does Ogasawarana rex live?
Ogasawarana rex 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 Ogasawarana rex?
The main threats to Ogasawarana rex 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.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.