The Dionycha are a clade of spiders (Araneomorphae:Entelegynae), characterized by the possession of two tarsal claws with tufts of hairs (setae) beside them, which produce strong adhesion, enabling some species to climb glass. The circumscription of the group has varied widely; a 2014 analysis resulted in about 20 families, including Salticidae (jumping spiders), Thomisidae (crab spiders), and Clubionidae. Spiders in this group have better senses (sight, hearing) than others, some even sho (Wikipedia)