Cave-adapted-relatives
Guides
Briggsus
Briggsus is a genus of armored harvestmen (Opiliones) in the family Cladonychiidae. The genus contains five described species, all originally described by Briggs in 1971 and later transferred to this genus by Özdikmen & Demir in 2008. Species in this genus are restricted to coastal forests of the Pacific Northwest.
Metanonychus
Metanonychus is a genus of harvestmen (order Opiliones) in the family Paranonychidae, established by Briggs in 1971. The genus comprises eight described species, all endemic to the northwestern United States. These arachnids belong to the suborder Laniatores, a diverse group of short-legged harvestmen. Most species were described in the original 1971 revision, with one additional species added in 2019.