Linyphiidae is a family of very small spiders comprising 4667 described species in 618 genera worldwide. This makes Linyphiidae the second largest family of spiders after the Salticidae. The family is poorly known; new genera and species are still being discovered throughout the world. The newest such genus is Yuelushannus from China, formally described in May 2020. Because of the difficulty in identifying such tiny spiders, there are regular changes in taxonomy as species are combined or divided.
Eridantes is a genus of North American dwarf spiders that was first described by C. R. Crosby & S. C. Bishop in 1933. As of May 2019 it contains only three species: E. diodontos, E. erigonoides, and E. utibilis.
Ceratinopsidis is a monotypic genus of North American dwarf spiders containing the single species, Ceratinopsidis formosa. It was first described by S. C. Bishop & C. R. Crosby in 1930, and has only been found in United States.
Cheniseo is a genus of North American dwarf spiders that was first described by S. C. Bishop & C. R. Crosby in 1935.
Coreorgonal is a genus of North American dwarf spiders that was first described by S. C. Bishop & C. R. Crosby in 1935. As of May 2019 it contains only three species in the United States and Canada: C. bicornis, C. monoceros, and C. petulcus.
Floricomus is a genus of North American dwarf spiders that was first described by C. R. Crosby & S. C. Bishop in 1925.
Gnathonargus is a monotypic genus of North American dwarf spiders containing the single species, Gnathonargus unicorn. It was first described by S. C. Bishop & C. R. Crosby in 1935, and has only been found in the United States.
Gnathonaroides is a monotypic genus of North American dwarf spiders containing the single species, Gnathonaroides pedalis. It was first described by S. C. Bishop & C. R. Crosby in 1938, and has only been found in Canada and the United States.
Goneatara is a genus of North American dwarf spiders that was first described by S. C. Bishop & C. R. Crosby in 1935.
Horcotes is a genus of dwarf spiders that was first described by C. R. Crosby & S. C. Bishop in 1933. As of May 2019 it contains only three species, found in Canada, Russia, and the United States: H. quadricristatus, H. strandi, and H. uncinatus.
Mythoplastoides is a genus of North American dwarf spiders that was first described by C. R. Crosby & S. C. Bishop in 1933. As of May 2019 it contains only two species, both found in the United States: M. erectus and M. exiguus.
Origanates is a monotypic genus of North American dwarf spiders containing the single species, Origanates rostratus. It was first described by C. R. Crosby & S. C. Bishop in 1933, and has only been found in the United States.
Paracornicularia is a monotypic genus of North American dwarf spiders containing the single species, Paracornicularia bicapillata. It was first described by C. R. Crosby & S. C. Bishop in 1931, and has only been found in the United States.
Phlattothrata is a genus of dwarf spiders that was first described by C. R. Crosby & S. C. Bishop in 1933. As of May 2019 it contains only two species, both found in the United States, Russia, Siberia, East Asia, and North America: P. flagellata and P. parva.
Sisicus is a genus of sheet weavers that was first described by S. C. Bishop & C. R. Crosby in 1938. As of June 2019 it contains only three species, found in North America, Europe, Siberia, and East Asia: S. apertus, S. penifusifer, and S. volutasilex.
Soucron is a monotypic genus of North American sheet weavers containing the single species, Soucron arenarium. It was first described by C. R. Crosby & S. C. Bishop in 1936, and has only been found in Canada and the United States.
Souessa is a monotypic genus of North American sheet weavers containing the single species, Souessa spinifera. It was first described by C. R. Crosby & S. C. Bishop in 1936, and has only been found in the United States.
Souessoula is a monotypic genus of North American sheet weavers containing the single species, Souessoula parva. It was first described by C. R. Crosby & S. C. Bishop in 1936, and has only been found in the United States.
Souidas is a monotypic genus of North American sheet weavers containing the single species, Souidas tibialis. It was first described by American entomologists C. R. Crosby & S. C. Bishop in 1936, and has only been found in the United States.
Soulgas is a monotypic genus of North American sheet weavers containing the single species, Soulgas corticarius. It was first described by C. R. Crosby & S. C. Bishop in 1936, and has only been found in the United States.
