EN

kuppelhodeedderkopp

Walckenaeria mitrata

Unknown

Overview

The kuppelhodeedderkopp (Walckenaeria mitrata) is a tiny sheet weaver spider measuring only 1-2mm in length, characterized by its distinctive domed or helmet-like cephalic structure that gives it its common name. This diminutive arachnid plays an important ecological role as both predator of minute invertebrates and prey for larger arthropods in specialized microhabitat communities.

Walckenaeria mitrata faces severe population declines primarily due to habitat destruction and fragmentation of its specialized wetland environments. Climate change and hydrological alterations are further reducing the availability of suitable bog and marsh habitats this species requires.

Threat summary

Habitat

Walckenaeria mitrata inhabits moss-rich environments, leaf litter layers, and the interface zones between soil and low vegetation where humidity levels remain consistently high. The species shows particular affinity for undisturbed areas with dense bryophyte coverage and stable microclimatic conditions.

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 Austria

Calidris ferrugineaVU

Calidris ferruginea

Declining
Anthophore estivaleCR

Anthophore estivale

Anthophora aestivalis

Unknown
Adonis BlueVU

Adonis Blue

Lysandra bellargus

Unknown

Frequently asked questions

Why is kuppelhodeedderkopp classified as Endangered?
kuppelhodeedderkopp 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. Walckenaeria mitrata faces severe population declines primarily due to habitat destruction and fragmentation of its specialized wetland environments. Climate change and hydrological alterations are further reducing the availability of suitable bog and marsh habitats this species requires.
Where does kuppelhodeedderkopp live?
kuppelhodeedderkopp occurs in Austria, Belgium, Estonia, Finland, France, and Germany (plus 12 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 kuppelhodeedderkopp?
The main threats to kuppelhodeedderkopp 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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