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.
Savignia is a genus of sheet weavers that was first described by John Blackwall in 1833. The name honors the French naturalist Marie Jules César Savigny.
Walckenaeria is a genus of dwarf spiders that was first described by John Blackwall in 1833. It is a senior synonym of Paragonatium, as well as Wideria, Cornicularia, Prosopotheca, Tigellinus, and Trachynella.
Wabasso is a genus of sheet weavers that was first described by Alfred Frank Millidge in 1984.
Semljicola is a genus of sheet weavers that was first described by Embrik Strand in 1906.
Agyneta is a genus of dwarf spiders that was first described by J. E. Hull in 1911.
Scotinotylus is a genus of sheet weavers that was first described by Eugène Louis Simon in 1884.
Diphya is a genus of long-jawed orb-weavers that was first described by H. Nicolet in 1849. D. tanasevitchi and D. albulum were transferred from Lophomma in 2007.
Bifurcia is a genus of Asian dwarf spiders that was first described by Michael I. Saaristo, L. H. Tu & S. Q. Li in 2006.
Erigonoplus is a genus of dwarf spiders that was first described by Eugène Louis Simon in 1884.
Macrargus is a genus of dwarf spiders that was first described by Friedrich Dahl in 1886.
Masikia is a genus of dwarf spiders that was first described by Alfred Frank Millidge in 1984.
Mecynargus is a genus of dwarf spiders that was first described by C. Chyzer & Władysław Kulczyński in 1894.
Paratmeticus is a monotypic genus of Asian dwarf spiders containing the single species, Paratmeticus bipunctis. It was first described by Y. M. Marusik & S. Koponen in 2010, and has only been found in Russia and Japan.
Perlongipalpus is a genus of Asian dwarf spiders that was first described by K. Y. Eskov & Y. M. Marusik in 1991.
Procerocymbium is a genus of sheet weavers that was first described by K. Y. Eskov in 1989.
Scutpelecopsis is a genus of sheet weavers that was first described by Y. M. Marusik & V. A. Gnelitsa in 2009.
Tarsiphantes is a monotypic genus of sheet weavers containing the single species, Tarsiphantes latithorax. It was first described by Embrik Strand in 1905, and has only been found in Europe, Canada, Russia, on the Greenland, and in Siberia.
Uusitaloia is a genus of Russian sheet weavers that was first described by Y. M. Marusik, S. Koponen & S. N. Danilov in 2001. As of June 2019 it contains only two species, found only in Russia: U. transbaicalica and U. wrangeliana.
