Length 2-3mm. Prosoma light to red-brown with dark radial stripes. Male prosome elevated step-like anteriorly, with distinct depression in the middle of dorsal line.

Identification requires microscopic examination of genitals. 

A ground-dwelling spider found in a variety of habitats. 

Summer

Widespread in central and south-eastern Britain becoming scattered in the north. 

Uncommon. 

https://srs.britishspiders.org.uk/portal.php/p/Summary/s/Walckenaeria+atrotibialis