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.
Pimoidae is a small family of araneomorph spiders first described by J. Wunderlich in 1986. It contains 37 species in four genera and is monophyletic. It is closely related to the Linyphiidae, and is sometimes treated as synonymous with that family.
Hylyphantes is a genus of dwarf spiders that was first described by Eugène Louis Simon in 1884. It is distinct from related genera by a pair of spiral copulatory ducts in the female, which are matched by a turbinated embolus in the male. Both sexes are similar in appearance; the male has no modifications.
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.
Sinopimoa is a monotypic genus of Chinese sheet weavers containing the single species, Sinopimoa bicolor. It was first described by S. Q. Li & J. Wunderlich in 2008, and is found in China. It was originally placed in its own family (Sinopimoidae) but is now considered a member of the Linyphiidae, and it may be a member of the Erigoninae.
Midia is a monotypic genus of dwarf spiders containing the single species, Midia midas. It was first described by Michael I. Saaristo & J. Wunderlich in 1995.
Agyneta is a genus of dwarf spiders that was first described by J. E. Hull in 1911.
Sinanapis is a genus of Asian araneomorph spiders in the family Anapidae, first described by J. Wunderlich & D. X. Song in 1995.
Batueta is a genus of Asian dwarf spiders that was first described by G. H. Locket in 1982.
Cornicephalus is a monotypic genus of East Asian dwarf spiders containing the single species, Cornicephalus jilinensis. It was first described by Michael I. Saaristo & J. Wunderlich in 1995, and has only been found in China.
Gongylidiellum is a genus of dwarf spiders that was first described by Eugène Louis Simon in 1884.
Maculoncus is a genus of dwarf spiders that was first described by J. Wunderlich in 1995. As of May 2019 it contains only three species, found in Georgia, Greece, Israel, Russia, and Taiwan: M. obscurus, M. orientalis, and M. parvipalpus.
Nasoonaria is a genus of Asian dwarf spiders that was first described by J. Wunderlich & D. X. Song in 1995.
Oia is a genus of Asian dwarf spiders that was first described by J. Wunderlich in 1973.
Primerigonina is a monotypic genus of Central American sheet weavers containing the single species, Primerigonina australis. It was first described by J. Wunderlich in 1995, and has only been found in Panama.
Scandichrestus is a monotypic genus of sheet weavers containing the single species, Scandichrestus tenuis. It was first described by J. Wunderlich in 1995, and has only been found in Russia, Finland, and Sweden.
Trichobactrus is a monotypic genus of Mongolian sheet weavers containing the single species, Trichobactrus brevispinosus. It was first described by J. Wunderlich in 1995, and is only found in Mongolia.
Trichoncyboides is a monotypic genus of sheet weavers containing the single species, Trichoncyboides simoni. It was first described by J. Wunderlich in 2008, and is found in Europe, Germany, Switzerland, and Czechia.
Trichopternoides is a monotypic genus of European sheet weavers containing the single species, Trichopternoides thorelli. It was first described by J. Wunderlich in 2008, and is only found in Europe.
Walckenaerianus is a genus of sheet weavers that was first described by J. Wunderlich in 1995. As of June 2019, this spider genus contains only two species, found only in Asia, Siberia, and Bulgaria: W. aimakensis and W. esyunini.
