Scylaceus is a genus of North American sheet weavers that was first described by S. C. Bishop & C. R. Crosby in 1938. As of May 2019 it contains only two species, both found in Canada and the United States: S. pallidus and S. selma.
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.
Pelecopsidis is a monotypic genus of North American dwarf spiders containing the single species, Pelecopsidis frontalis. It was first described by S. C. Bishop & C. R. Crosby in 1935, 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.
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.
Sougambus is a monotypic genus of North American sheet weavers containing the single species, Sougambus bostoniensis. It was first described by C. R. Crosby & S. C. Bishop in 1936, and has only been found in Canada and 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.
Symmigma is a monotypic genus of North American sheet weavers containing the single species, Symmigma minimum. It was first described by C. R. Crosby & S. C. Bishop in 1933, and has only been found in the United States.
