CR

Opisthostoma thersites

Unknown

Overview

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

Opisthostoma thersites faces severe threats from limestone quarrying and mining activities that directly destroy its cave and karst habitat. The species' extremely restricted range makes it particularly vulnerable to habitat modification, while agricultural expansion and urban development in surrounding areas fragment remaining suitable habitat. Climate change poses additional risks through altered moisture regimes that could affect the delicate microhabitat conditions this cave-dwelling snail requires.

Threat summary

Habitat

This species inhabits limestone caves and karst formations in tropical Southeast Asia, requiring specific microhabitat conditions with stable humidity and temperature. It is typically found in the twilight zones of caves where moisture levels remain consistently high and substrate provides suitable conditions for feeding and reproduction.

Forest· majorForest - Subtropical/tropical moist lowland· majorRocky areas· major

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Frequently asked questions

Why is Opisthostoma thersites classified as Critically Endangered?
Opisthostoma thersites 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. Opisthostoma thersites faces severe threats from limestone quarrying and mining activities that directly destroy its cave and karst habitat. The species' extremely restricted range makes it particularly vulnerable to habitat modification, while agricultural expansion and urban development in surrounding areas fragment remaining suitable habitat. Climate change poses additional risks through altered moisture regimes that could affect the delicate microhabitat conditions this cave-dwelling snail requires.
Where does Opisthostoma thersites live?
Opisthostoma thersites occurs in Malaysia. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Opisthostoma thersites?
The main threats to Opisthostoma thersites 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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