VU

sigdspydedderkopp

Silometopus reussi

Unknown

Overview

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

Silometopus reussi faces significant pressure from habitat degradation in its specialized coastal dune and sandy grassland environments. Urban development and recreational activities along European coastlines have fragmented and destroyed critical breeding sites. Climate change poses additional risks through altered precipitation patterns and increased storm intensity affecting the delicate microhabitats this spider requires for successful reproduction.

Threat summary

Habitat

This specialized spider inhabits coastal sand dunes, sandy grasslands, and dry heathlands across parts of Europe. It requires well-drained sandy soils with sparse vegetation cover and specific microclimate conditions for web construction and prey capture.

Other threatened species in Linyphiidae

EN

knopphodeedderkopp

Walckenaeria nodosa

Unknown
agnhodeedderkoppCR

agnhodeedderkopp

Walckenaeria alticeps

Unknown
svepeedderkoppCR

svepeedderkopp

Baryphyma trifrons

Unknown
VU

madgropspindel

Baryphyma pratense

Unknown

Threatened in Åland Islands

Calidris ferrugineaVU

Calidris ferruginea

Declining
Scarce BlackneckCR

Scarce Blackneck

Lygephila craccae

Unknown
EN

Dolichopus notatus

Unknown

Frequently asked questions

Why is sigdspydedderkopp classified as Vulnerable?
sigdspydedderkopp 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. Silometopus reussi faces significant pressure from habitat degradation in its specialized coastal dune and sandy grassland environments. Urban development and recreational activities along European coastlines have fragmented and destroyed critical breeding sites. Climate change poses additional risks through altered precipitation patterns and increased storm intensity affecting the delicate microhabitats this spider requires for successful reproduction.
Where does sigdspydedderkopp live?
sigdspydedderkopp occurs in Åland Islands, Austria, Belgium, Canada, Denmark, and Estonia (plus 17 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 sigdspydedderkopp?
The main threats to sigdspydedderkopp 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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