EN

Crangonyx dearolfi

Unknown

Overview

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

Crangonyx dearolfi faces severe threats from groundwater contamination and aquifer depletion in its limited karst cave systems. Urban development and agricultural runoff in the surrounding watershed directly impact the water quality of its subterranean habitat. The species' extremely restricted range makes it particularly vulnerable to localized pollution events and hydrological changes that could eliminate entire populations.

Threat summary

Habitat

This endemic amphipod inhabits groundwater systems and karst caves in limestone formations, typically found in phreatic waters and cave streams. The species is restricted to specific underground aquatic environments with stable temperatures and water chemistry.

FRESHWATER· major

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Stygobromus cooperi

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Threatened in United States

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Lepiota echinella

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Lyophyllum deliberatum

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Frequently asked questions

Why is Crangonyx dearolfi classified as Endangered?
Crangonyx dearolfi is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Crangonyx dearolfi faces severe threats from groundwater contamination and aquifer depletion in its limited karst cave systems. Urban development and agricultural runoff in the surrounding watershed directly impact the water quality of its subterranean habitat. The species' extremely restricted range makes it particularly vulnerable to localized pollution events and hydrological changes that could eliminate entire populations.
Where does Crangonyx dearolfi live?
Crangonyx dearolfi occurs in United States. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Crangonyx dearolfi?
The main threats to Crangonyx dearolfi 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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