Females reach about 8–11 mm length, males only 6–8 mm. Both sexes are coloured grey to brown. The whole spider has a furry appearance and is flattened in shape.
The species builds a kind of nest under the bark of dead trees. Up to 100 of these nests can occur side by side. This spider has a hierarchy: weaker animals will show their inferiority by strutting their front legs and slowly receding from the scene.
It is uncommon but widespread in England, more frequent in the south and east. It is widespread in northern Europe.