The Agelenidae are a large family of spiders in the suborder Araneomorphae. Well-known examples include the common "grass spiders" of the genus Agelenopsis. Nearly all Agelenidae are harmless to humans, but the bite of the hobo spider may be medically significant, and some evidence suggests it might cause necrotic lesions. However, the matter remains subject to debate. The most widely accepted common name for members of the family is funnel weaver.
Dictynidae is a family of cribellate, hackled band-producing spiders first described by Octavius Pickard-Cambridge in 1871. Most build irregular webs on or near the ground, creating a tangle of silken fibers among several branches or stems of one plant.
Cybaeidae is a family of spiders first described by Nathan Banks in 1892. The diving bell spider or water spider Argyroneta aquatica is currently included in this family, though it may soon be moved to Dictynidae.
Saltonia is a monotypic genus of North American cribellate araneomorph spiders in the family Dictynidae containing the single species, Saltonia incerta. It was first described by R. V. Chamberlin & Wilton Ivie in 1942, and has only been found in United States. Originally placed with the funnel weavers, it was moved to the Dictynidae in 1967.
Vaine Wilton Ivie was an American arachnologist, who described hundreds of new species and many new genera of spiders, both under his own name and in collaboration with Ralph Vary Chamberlin. He was employed by the American Museum of Natural History in New York. He also was a supporter of the Technocracy movement.
Dictyna is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Carl Jakob Sundevall in 1833.
Cybaeus is a genus of araneomorph spiders in the Cybaeidae family, first described by Ludwig Carl Christian Koch in 1868. It is found in America, Europe, Japan, Korea and China. Females of different species are difficult to distinguish, especially in North America. Images of males that include pedipalps are the easiest to determine species.
Cybaeina is a genus of North American araneomorph spiders in the Cybaeidae family, and was first described by R. V. Chamberlin & Wilton Ivie in 1932. Originally described from a single female found in Olympia, Washington, it was placed with the Cybaeidae in 1967.
Cybaeota is a genus of North American araneomorph spiders in the family Cybaeidae, and was first described by R. V. Chamberlin & Wilton Ivie in 1933. It was moved to the Cybaeidae in 1967.
Blabomma is a genus of araneomorph spiders in the Cybaeidae family, and was first described by R. V. Chamberlin & Wilton Ivie in 1937. Originally placed with the funnel weavers, it was moved to the Dictynidae in 1967, and to the Cybaeidae in 2017.
Tivyna is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by R. V. Chamberlin in 1948.
Yorima is a genus of araneomorph spiders in the Cybaeidae family, and was first described by R. V. Chamberlin & Wilton Ivie in 1942. Originally placed in the funnel weaver family, it was moved to the Dictynidae in 1967, and to the Cybaeidae in 2017.
Calymmaria is a genus of North American araneomorph spiders in the family Cybaeidae, and was first described by R. V. Chamberlin & Wilton Ivie in 1937. They have body lengths ranging from 2 to 10 millimetres.
Dirksia is a genus of araneomorph spiders in the Cybaeidae family, and was first described by R. V. Chamberlin & Wilton Ivie in 1942 as a subgenus of Ethobuella. Originally placed with the funnel weavers, it was elevated to genus and moved to the dwarf sheet spiders in 1967, then moved to the Cybaeidae in 2017. As of May 2019 it contains only two species: D. cinctipes and D. pyrenaea.
Ethobuella is a genus of North American araneomorph spiders in the Cybaeidae family, and was first described by R. V. Chamberlin & Wilton Ivie in 1937. As of May 2019 it contains only two species: E. hespera and E. tuonops. Originally placed with the funnel weavers, it was elevated to genus and moved to the dwarf sheet spiders in 1967, then moved to the Cybaeidae in 2017.
Eulaira is a genus of North American dwarf spiders that was first described by Ralph Vary Chamberlin & Vaine Wilton Ivie in 1933.
Masonetta is a monotypic genus of North American dwarf spiders containing the single species, Masonetta floridana. It was first described by Ralph Vary Chamberlin & Vaine Wilton Ivie in 1939, and has only been found in the United States.
Tachygyna is a genus of North American sheet weavers that was first described by Ralph Vary Chamberlin & Vaine Wilton Ivie in 1939.
Piabuna is a genus of North American araneomorph spiders first described by R. V. Chamberlin & Wilton Ivie in 1933. Originally added to the Liocranidae, it was moved to the Corinnidae in 2002, then to the Phrurolithidae in 2014.
