Gnaphosa bicolor
VU

Gnaphosa bicolor

Local name: Rødbenet museedderkop

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Gnaphosa_bicolor

Overview

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

Gnaphosa bicolor faces significant pressure from habitat degradation in its specialized coastal and sandy environments. Urban development and recreational activities along coastlines have reduced available nesting sites, while changes in vegetation structure from invasive plant species alter the microhabitat conditions this ground-dwelling spider requires. Climate change poses additional risks through altered precipitation patterns that affect prey availability and soil moisture levels critical for the species' survival.

Threat summary

Habitat

This ground-dwelling spider inhabits sandy coastal areas, dunes, and dry grasslands with sparse vegetation. It constructs silk-lined burrows in loose sandy soils and is typically found in areas with low vegetation cover that provide suitable hunting grounds for its nocturnal predatory behavior.

Other threatened species in Gnaphosidae

zandmuisspinCR

zandmuisspin

Haplodrassus umbratilis

Unknown
VU

Haplodrassus minor

Unknown
VU

Drassyllus pumilus

Unknown
VU

stekelkampoot

Zelotes longipes

Unknown

Threatened in Åland Islands

Calidris ferrugineaVU

Calidris ferruginea

Declining
Scarce BlackneckCR

Scarce Blackneck

Lygephila craccae

Unknown
EN

knopphodeedderkopp

Walckenaeria nodosa

Unknown
EN

Dolichopus notatus

Unknown

Frequently asked questions

Why is Rødbenet museedderkop classified as Vulnerable?
Rødbenet museedderkop 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. Gnaphosa bicolor faces significant pressure from habitat degradation in its specialized coastal and sandy environments. Urban development and recreational activities along coastlines have reduced available nesting sites, while changes in vegetation structure from invasive plant species alter the microhabitat conditions this ground-dwelling spider requires. Climate change poses additional risks through altered precipitation patterns that affect prey availability and soil moisture levels critical for the species' survival.
Where does Rødbenet museedderkop live?
Rødbenet museedderkop occurs in Åland Islands, Austria, Belarus, Croatia, Denmark, and Estonia (plus 16 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 Rødbenet museedderkop?
The main threats to Rødbenet museedderkop 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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