CR

Hemistomia yalayu

Unknown

Overview

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

Hemistomia yalayu faces severe threats from habitat destruction due to limestone quarrying and mining activities in its restricted karst cave systems. The species' extremely limited distribution makes it particularly vulnerable to localized disturbances, with entire populations potentially eliminated by single quarrying operations. Urban development and agricultural expansion in the surrounding landscape further fragment and degrade the cave ecosystems this endemic snail depends upon.

Threat summary

Habitat

This critically endangered land snail is endemic to limestone karst cave systems and associated rocky outcrops in a highly restricted geographic range. The species requires specific microhabitat conditions found within cave entrances and limestone crevices with particular moisture and temperature regimes.

FRESHWATER· major

Conservation measures underway

Species recovery

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Frequently asked questions

Why is Hemistomia yalayu classified as Critically Endangered?
Hemistomia yalayu 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. Hemistomia yalayu faces severe threats from habitat destruction due to limestone quarrying and mining activities in its restricted karst cave systems. The species' extremely limited distribution makes it particularly vulnerable to localized disturbances, with entire populations potentially eliminated by single quarrying operations. Urban development and agricultural expansion in the surrounding landscape further fragment and degrade the cave ecosystems this endemic snail depends upon.
Where does Hemistomia yalayu live?
Hemistomia yalayu occurs in New Caledonia. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Hemistomia yalayu?
The main threats to Hemistomia yalayu 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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