Arctosa

Arctosa is a genus of wolf spiders first described by Carl Ludwig Koch in 1847, with more than 150 described species.

==Life style== Arctosa species are swift runners with relatively keen eyesight. Most species inhabit sandy places such as seashores or the banks of rivers and lakes, though some occupy heath or lichen habitats in high mountains. The principal body colors are gray, off-white, and tawny brown, matching their habitat.