; subphylum Chelicerata, class Arachnida)
Order of minute colourless, thin-skinned arachnids that are probably closely related to the uropygids and amblypygids. The abdomen is joined by a stalk, and has a large mesosoma and a short metasoma, with a long, multisegmented flagellum. The chelicerae are thin, three-segmented, and chelate, with a movable lateral finger. The 50 or so species favour habitats of high humidity (under stones and soil), and although they have a world-wide distribution most occur in southern Europe, southern USA, and S. America.
Subjects: Zoology and Animal Sciences.