While males are yellowish brown to reddish, females are lighter.

Males have dark legs, but yellow coxae and "knees"; the legs of females show alternatingly light and dark rings.

The backs of females sport a dark, saddle-like pattern with a light longitudinal stripe in the middle.

Adults can be found from June to December.

[1] Opilio canestrinii probably originates from Italy, but has invaded Central Europe since the late 1970’s, and has since almost everywhere replaced the similar O. parietinus.