CR

Thickshell Pondsnail

Stagnicola utahensis

Unknown

Overview

Ladislavella utahensis, common name the thickshell pondsnail, is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusc in the family Lymnaeidae, the pond snails. This species is endemic to Utah Lake in the United States. The last living snails were found in the early 1930s.

Stagnicola utahensis faces severe threats from habitat degradation and water diversions affecting the freshwater springs and seeps it depends upon. Agricultural development and groundwater extraction have reduced water levels in critical habitats, while introduced species and pollution from agricultural runoff further compromise the limited aquatic environments this endemic snail requires for survival.

Threat summary

Habitat

This freshwater snail is endemic to springs, seeps, and associated wetland areas in Utah's Great Basin region. It requires clean, cool, flowing water with stable temperatures and specific water chemistry conditions found in natural spring systems.

Wetlands (inland) - Permanent freshwater lakes· major

Other threatened species in LYMNAEIDAE

EN

Shortspire Pondsnail

Stagnicola idahoensis

Unknown
EN

Shortface Lanx

Fisherola nuttalli

Declining
VU

Newcomb's Bugle

Erinna newcombi

Declining
CR

Fat-whorled Pondsnail

Stagnicola bonnevillensis

Declining

Frequently asked questions

Why is Thickshell Pondsnail classified as Critically Endangered?
Thickshell Pondsnail 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. Stagnicola utahensis faces severe threats from habitat degradation and water diversions affecting the freshwater springs and seeps it depends upon. Agricultural development and groundwater extraction have reduced water levels in critical habitats, while introduced species and pollution from agricultural runoff further compromise the limited aquatic environments this endemic snail requires for survival.
Where does Thickshell Pondsnail live?
Thickshell Pondsnail 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 Thickshell Pondsnail?
The main threats to Thickshell Pondsnail are 11.2, ai-1, ai-2, and ai-3. The full IUCN-classified threat record for this species is detailed on the species page.

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