CR

Opisthostoma otostoma

Unknown

Overview

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

Opisthostoma otostoma faces severe threats from limestone quarrying activities that directly destroy its cave and karst habitat in Peninsular Malaysia. The species' extremely restricted range makes it particularly vulnerable to habitat modification, with ongoing quarrying operations fragmenting the remaining suitable limestone formations. Urban development and infrastructure expansion in the region further compound these pressures by altering drainage patterns and microclimate conditions essential for this specialized cave-dwelling snail.

Threat summary

Habitat

This species inhabits limestone caves and karst formations in Peninsular Malaysia, requiring specific microclimate conditions found in these calcium-rich environments. It occupies the twilight zones of caves where humidity levels remain consistently high and temperature fluctuations are minimal.

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