Crustulina guttata
VU

Crustulina guttata

Unknown

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

Overview

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

Crustulina guttata faces significant pressure from habitat degradation in its specialized cave and underground environments. Agricultural intensification and urban development above ground alter water chemistry and flow patterns that are critical for maintaining the delicate subterranean ecosystems this species depends on. Climate change poses additional risks through altered precipitation patterns that could disrupt the moisture levels essential for cave-dwelling invertebrate communities.

Threat summary

Habitat

This species inhabits cave systems and underground spaces, particularly in areas with stable moisture levels and specific microclimate conditions. It is typically found in the twilight zones of caves where organic matter accumulates, providing the detritus-rich environment necessary for its survival.

Other threatened species in Theridiidae

VU

Theridion familiare

Unknown
Dipoena melanogasterVU

Dipoena melanogaster

Unknown
VU

Pholcomma gibbum

Unknown
Lasaeola pronaVU

Lasaeola prona

Unknown

Threatened in Åland Islands

Scarce BlackneckCR

Scarce Blackneck

Lygephila craccae

Unknown
EN

Dolichopus notatus

Unknown
Haplodrassus cognatusCR

Haplodrassus cognatus

Unknown
Yellow-breasted BuntingCR

Yellow-breasted Bunting

Emberiza aureola

Declining

Frequently asked questions

Why is Crustulina guttata classified as Vulnerable?
Crustulina guttata 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. Crustulina guttata faces significant pressure from habitat degradation in its specialized cave and underground environments. Agricultural intensification and urban development above ground alter water chemistry and flow patterns that are critical for maintaining the delicate subterranean ecosystems this species depends on. Climate change poses additional risks through altered precipitation patterns that could disrupt the moisture levels essential for cave-dwelling invertebrate communities.
Where does Crustulina guttata live?
Crustulina guttata occurs in Åland Islands, Austria, Azerbaijan, Belarus, Belgium, and Bulgaria (plus 30 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 Crustulina guttata?
The main threats to Crustulina guttata 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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