Entelecara omissa
CR

Entelecara omissa

Local name: kärrgropspindel

Unknown

Photo: Photo: (c) Matt, some rights reserved (CC BY-NC), uploaded by Matt

Overview

Entelecara omissa is a tiny sheet weaver spider belonging to the Linyphiidae family, measuring only 1-2mm in body length with a dark brown to black coloration. This minute arachnid plays an important ecological role as both predator of small invertebrates and prey for larger arthropods in wetland food webs.

Entelecara omissa, the kärrgropspindel, is critically endangered primarily due to habitat loss and degradation of its specialized wetland environments. This small spider species has extremely limited distribution and is highly vulnerable to changes in water levels, pollution, and human disturbance of its bog and marsh habitats.

Threat summary

Habitat

Kärrgropspindel inhabits the moss layers and sedge tussocks of pristine boreal bogs and acidic fens, particularly favoring areas with consistent moisture and minimal disturbance. The species requires the specific microclimate conditions found in Sphagnum moss communities within these peat-forming wetlands.

Frequently asked questions

Why is kärrgropspindel classified as Critically Endangered?
kärrgropspindel 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. Entelecara omissa, the kärrgropspindel, is critically endangered primarily due to habitat loss and degradation of its specialized wetland environments. This small spider species has extremely limited distribution and is highly vulnerable to changes in water levels, pollution, and human disturbance of its bog and marsh habitats.
Where does kärrgropspindel live?
kärrgropspindel occurs in Belgium, Denmark, France, Germany, Netherlands, and Norway (plus 3 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 kärrgropspindel?
The main threats to kärrgropspindel 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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