The walnut orb-weaver spider is very wide and flattened, with a leathery skin.

The spider hides during the day outside of buildings in wall crevices or under loose bark.

They are very common in Central Europe; females occur all year, while males appear mostly during the summer.

This spider has a flattened body, helping it to secrete itself in cracks and crevices.

This tends to act as a defensive advantage and increases the number of locations an orb-web can be effectively constructed.