VU

Monadenia circumcarinata

Unknown

Overview

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

Monadenia circumcarinata faces severe habitat degradation from urban development and agricultural expansion throughout its limited California range. The species is particularly vulnerable to drought conditions that desiccate its forest floor microhabitats, while invasive plant species alter the leaf litter composition essential for its survival. Fire suppression practices have also modified the natural forest structure, reducing the cool, moist conditions this terrestrial snail requires.

Threat summary

Habitat

This terrestrial snail inhabits the cool, moist leaf litter and understory of mixed coniferous and deciduous forests in coastal California. It requires specific microhabitat conditions with high humidity, stable temperatures, and rich organic matter for feeding and reproduction.

Other threatened species in HELMINTHOGLYPTIDAE

CR

Micrarionta feralis

Unknown
VU

Micrarionta opuntia

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Micrarionta gabbii

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Monadenia setosa

Unknown

Frequently asked questions

Why is Monadenia circumcarinata classified as Vulnerable?
Monadenia circumcarinata is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Monadenia circumcarinata faces severe habitat degradation from urban development and agricultural expansion throughout its limited California range. The species is particularly vulnerable to drought conditions that desiccate its forest floor microhabitats, while invasive plant species alter the leaf litter composition essential for its survival. Fire suppression practices have also modified the natural forest structure, reducing the cool, moist conditions this terrestrial snail requires.
Where does Monadenia circumcarinata live?
Monadenia circumcarinata 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 Monadenia circumcarinata?
The main threats to Monadenia circumcarinata 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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