VU

grotthuvudspindel

Walckenaeria incisa

Unknown

Overview

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

Walckenaeria incisa faces severe habitat degradation from agricultural intensification and urban development across its limited Scandinavian range. The species' specialized cave and rock crevice microhabitats are particularly vulnerable to quarrying activities and groundwater changes. Climate change poses additional risks by altering the humid microclimatic conditions essential for this spider's survival in its restricted montane environments.

Threat summary

Habitat

This specialized spider inhabits caves, rock crevices, and similar cryptic microhabitats in montane regions of Scandinavia. It requires consistently humid conditions and stable temperatures found in these sheltered environments, often occurring near cave entrances where some light penetration occurs.

Other threatened species in Linyphiidae

agnhodeedderkoppCR

agnhodeedderkopp

Walckenaeria alticeps

Unknown
svepeedderkoppCR

svepeedderkopp

Baryphyma trifrons

Unknown
EN

skovledderkopp

Araeoncus crassiceps

Unknown
VU

madgropspindel

Baryphyma pratense

Unknown

Threatened in Belgium

Calidris ferrugineaVU

Calidris ferruginea

Declining
Anthophore estivaleCR

Anthophore estivale

Anthophora aestivalis

Unknown
Adonis BlueVU

Adonis Blue

Lysandra bellargus

Unknown

Frequently asked questions

Why is grotthuvudspindel classified as Vulnerable?
grotthuvudspindel 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. Walckenaeria incisa faces severe habitat degradation from agricultural intensification and urban development across its limited Scandinavian range. The species' specialized cave and rock crevice microhabitats are particularly vulnerable to quarrying activities and groundwater changes. Climate change poses additional risks by altering the humid microclimatic conditions essential for this spider's survival in its restricted montane environments.
Where does grotthuvudspindel live?
grotthuvudspindel occurs in Belgium, France, Germany, Greece, Iceland, and Luxembourg (plus 6 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 grotthuvudspindel?
The main threats to grotthuvudspindel 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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