VU

Crunoecia irrorata

Local name: lähdesirvikäs

Unknown

Overview

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

Lähdesirvikäs faces significant pressure from water pollution and eutrophication of its spring-fed habitats, which degrades water quality and alters the delicate chemical balance these caddisflies require. Habitat modification through human activities near spring sources, including agricultural runoff and urban development, further threatens the species' specialized microhabitat requirements. Climate change poses an additional risk by potentially altering groundwater flow patterns and spring temperatures that are critical for larval development.

Threat summary

Habitat

This caddisfly species inhabits cold, clean spring-fed streams and seepages with stable water temperatures and high oxygen content. The larvae require specific substrate conditions in these pristine aquatic environments, typically found in areas with minimal human disturbance.

Threatened in Austria

Calidris ferrugineaVU

Calidris ferruginea

Declining
Anthophore estivaleCR

Anthophore estivale

Anthophora aestivalis

Unknown
Adonis BlueVU

Adonis Blue

Lysandra bellargus

Unknown
agnhodeedderkoppCR

agnhodeedderkopp

Walckenaeria alticeps

Unknown

Frequently asked questions

Why is lähdesirvikäs classified as Vulnerable?
lähdesirvikäs 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. Lähdesirvikäs faces significant pressure from water pollution and eutrophication of its spring-fed habitats, which degrades water quality and alters the delicate chemical balance these caddisflies require. Habitat modification through human activities near spring sources, including agricultural runoff and urban development, further threatens the species' specialized microhabitat requirements. Climate change poses an additional risk by potentially altering groundwater flow patterns and spring temperatures that are critical for larval development.
Where does lähdesirvikäs live?
lähdesirvikäs occurs in Austria, Belgium, Croatia, Czechia, Denmark, and Estonia (plus 18 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to lähdesirvikäs?
The main threats to lähdesirvikäs 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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