Close up Daddy longlegs Opiliones feeding on a moth

Opiliones /ˈoʊpɪliːˈoʊniːs/ (Latin opilio, “shepherd“; formerly Phalangida) is an order of arachnids commonly known as harvestmen. As of December 2011, over 6,500 species of harvestmen have been discovered worldwide,[1] although the total number of extant species may exceed 10,000.[2] The order Opiliones includes four suborders: Cyphophthalmi, Eupnoi, Dyspnoi, and Laniatores, and representatives of each can be found on every continent except Antarctica (with the exception of Dyspnoi, which is restricted to