The Opiliones are an order of arachnids colloquially known as harvestmen, harvesters, harvest spiders, or daddy longlegs. As of April 2017, over 6,650 species of harvestmen have been discovered worldwide, although the total number of extant species may exceed 10,000. The order Opiliones includes five suborders: Cyphophthalmi, Eupnoi, Dyspnoi, Laniatores, and Tetrophthalmi, which were named in 2014.
Opilio is a genus of harvestmen with 35 known species.
The Eupnoi are a suborder of harvestmen, with more than 200 genera, and about 1,700 described species.
Phalangium is a genus of harvestmen that occur mostly in the Old World. The best known species is Phalangium opilio, which is so common in many temperate regions that it is simply called "harvestman".
Rilaena is a genus of the harvestman family Phalangiidae.
The Sclerosomatidae are a family of harvestmen with about 1,300 known species. One former subfamily has been recently removed to form a new family, Globipedidae.
Leiobunum is a genus of the harvestman family Sclerosomatidae with more than 100 described species. Contrary to popular belief, they are not spiders, although they share a resemblance. They are arachnids, in the order Opiliones, harvestmen. Species in Leiobunum tend to have relatively long legs compared with other harvestmen, and some species are gregarious.
Phalangium opilio is a species of harvestman belonging to the family Phalangiidae.
Trogulidae is a family of harvestmen with 5 genera and 57 extant species and one fossil species.
The Nemastomatidae are a family of harvestmen with about 170 described species in 16 recent genera. Several fossil species and genera are known.
Epedanidae is a family of the harvestman infraorder Grassatores with about 200 described species. They are the sister group of the Gonyleptoidea.
Podoctidae is a family of the harvestman infraorder Grassatores with about 130 described species.
Lacinius is a genus of harvestmen in the family Phalangiidae.
Egaenus is a genus of harvestmen in the family Phalangiidae.
Homolophus is a genus of harvestmen in the family Phalangiidae.
Metaphalangium is a genus of harvestmen in the family Phalangiidae.
Platybunus is a genus of harvestmen in the family Phalangiidae.
Metaphalangium cirtanum is a species of harvestman belonging to the family Phalangiidae.
Nemastomatinae is a subfamily of harvestmen with 123 described species in 18 genera.
