liten elvebreddsedderkopp
Arctosa stigmosa
Overview
Arctosa stigmosa is a medium-sized wolf spider with distinctive dark markings on its carapace and a mottled brown-gray coloration that provides excellent camouflage against riverbank substrates. This semi-aquatic arachnid plays a crucial role as both predator and prey in riparian ecosystems, hunting small invertebrates along water margins while serving as food for birds and larger arthropods.
Arctosa stigmosa is declining primarily due to habitat degradation and loss of suitable riverbank environments. Human activities including river regulation, pollution, and development along waterways have significantly reduced the quality and extent of the specialized sandy and gravelly riverbank habitats this species requires.
Habitat
This species inhabits the sandy and gravelly shores of fast-flowing rivers and streams, particularly areas subject to natural flooding cycles that create the dynamic sediment conditions it requires. It constructs burrows in loose substrate within the splash zone and areas of seasonal inundation along pristine waterways.
Other threatened species in Lycosidae
Threatened in Bulgaria
Frequently asked questions
Why is liten elvebreddsedderkopp classified as Endangered?
Where does liten elvebreddsedderkopp live?
What are the main threats to liten elvebreddsedderkopp?
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