VU

tuvklotspindel

Rugathodes instabilis

Unknown

Overview

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

Rugathodes instabilis faces significant pressure from habitat degradation in its specialized microhabitats within Scandinavian forests. The species' dependence on specific moisture and temperature conditions in forest floor environments makes it particularly vulnerable to climate-induced changes in precipitation patterns and temperature fluctuations. Forestry practices that alter the understory structure and leaf litter composition directly impact the spider's hunting grounds and web-building sites.

Threat summary

Habitat

This small theridiid spider inhabits the forest floor and low vegetation of boreal and temperate forests in Scandinavia, particularly favoring areas with dense leaf litter and stable moisture conditions. The species constructs its webs in the understory layer where it can exploit the specific microclimate conditions required for its survival and reproduction.

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Frequently asked questions

Why is tuvklotspindel classified as Vulnerable?
tuvklotspindel 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. Rugathodes instabilis faces significant pressure from habitat degradation in its specialized microhabitats within Scandinavian forests. The species' dependence on specific moisture and temperature conditions in forest floor environments makes it particularly vulnerable to climate-induced changes in precipitation patterns and temperature fluctuations. Forestry practices that alter the understory structure and leaf litter composition directly impact the spider's hunting grounds and web-building sites.
Where does tuvklotspindel live?
tuvklotspindel occurs in Austria, Belgium, Bulgaria, Denmark, Estonia, and Finland (plus 11 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 tuvklotspindel?
The main threats to tuvklotspindel 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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