Entelecara omissa
Local name: kärrgropspindel
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.
9
Countries
Taxonomy & Classification
Kingdom
Animalia
Phylum
Arthropoda
Class
Arachnida
Order
Araneae
Family
Linyphiidae
Genus
Entelecara
Entelecara omissa belongs to the family Linyphiidae, order Araneae, within the Arachnida class.
Species Profile
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.
Key Facts
Habitat & Distribution
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.
Threats
IUCN Red List: Critically Endangered
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.
Habitat loss and fragmentation of wetland ecosystems
Water level changes due to drainage and climate change
Climate change affecting microhabitat conditions
Human disturbance and recreational activities
Pollution and eutrophication of bog habitats
Found in 9 Countries
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
This page: SpeciesRadar (2025). Entelecara omissa (Entelecara omissa). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/karrgropspindel