Clubiona germanica
Local name: dalsäckspindel
Photo: iNaturalist: (c) André MIQUET, niektoré práva vyhradené (CC BY-NC), uploaded by André MIQUET
Overview
Clubiona germanica, known as the German sac spider, is a small nocturnal arachnid belonging to the sac spider family Clubionidae. This pale yellowish-brown spider constructs distinctive silken retreats or 'sacs' under bark, stones, or in leaf litter where it rests during daylight hours. As a generalist predator, it plays an important role in controlling populations of small arthropods in forest floor ecosystems.
Clubiona germanica faces significant threats from habitat loss and degradation due to urbanization, agricultural intensification, and changes in forest management practices. The species' specialized habitat requirements make it particularly vulnerable to environmental changes, while its limited dispersal ability restricts population recovery and genetic exchange between fragmented populations.
Habitat
This species inhabits deciduous and mixed forests, particularly in leaf litter, under bark, and in low vegetation layers of woodland edges and clearings. It shows preference for mature forest habitats with stable microclimate conditions and diverse understory vegetation.
Other threatened species in Clubionidae
Threatened in Austria
Frequently asked questions
Why is dalsäckspindel classified as Vulnerable?
Where does dalsäckspindel live?
What are the main threats to dalsäckspindel?
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