Opilio Parietinus

Opilio parietinus is a species of harvestman, commonly known as a daddy longlegs. It is grayish green overall and can be distinguished from the closely related Opilio canestrinii by dark spots on its coxae. It was historically often found on house walls in Central Europe, showing a preference for building exteriors and other human structures, and its range covers Europe and North America. In most of its former range in Central Europe it has been largely displaced by the invasive Opilio canestrinii.