VU

pygmeedderkopp

Tapinocyboides pygmaeus

Unknown

Overview

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

The pygmeedderkopp faces severe pressure from habitat degradation in its specialized moss and lichen microhabitats within old-growth forests. Agricultural expansion and logging activities have fragmented its range, while climate change alters the moisture conditions essential for the bryophyte communities it depends upon. The species' extremely small size and cryptic nature make population monitoring challenging, potentially masking the true extent of decline.

Threat summary

Habitat

This minute spider inhabits the moss and lichen layers of old-growth coniferous and mixed forests, particularly favoring humid microenvironments on tree bark and fallen logs. It requires stable moisture conditions and undisturbed bryophyte communities that develop only in mature forest ecosystems.

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 pygmeedderkopp classified as Vulnerable?
pygmeedderkopp 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. The pygmeedderkopp faces severe pressure from habitat degradation in its specialized moss and lichen microhabitats within old-growth forests. Agricultural expansion and logging activities have fragmented its range, while climate change alters the moisture conditions essential for the bryophyte communities it depends upon. The species' extremely small size and cryptic nature make population monitoring challenging, potentially masking the true extent of decline.
Where does pygmeedderkopp live?
pygmeedderkopp occurs in Åland Islands, Austria, Belgium, Denmark, Estonia, and Finland (plus 10 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 pygmeedderkopp?
The main threats to pygmeedderkopp 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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