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.
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.
Nusoncus is a monotypic genus of dwarf spiders containing the single species, Nusoncus nasutus. It was first described by J. Wunderlich in 2008. It is considered new to the fauna of Latvia since 2009.
Agyneta is a genus of dwarf spiders that was first described by J. E. Hull in 1911.
Afribactrus is a monotypic genus of African dwarf spiders containing the single species, Afribactrus stylifrons. It was first described by J. Wunderlich & V. Nicolai in 1995, and has only been found in South Africa.
Australolinyphia is a monotypic genus of Australian dwarf spiders containing the single species, Australolinyphia remota. It was first described by J. Wunderlich in 1976, and has only been found in Australia.
Caviphantes is a genus of dwarf spiders that was first described by R. Oi in 1960.
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.
Heterolinyphia is a genus of Asian dwarf spiders that was first described by J. Wunderlich in 1973. As of May 2019 it contains only two species, both found in Bhutan, India, and Nepal: H. secunda and H. tarakotensis.
Knischatiria is a genus of dwarf spiders that was first described by J. Wunderlich in 1976. As of May 2019 it contains only three species, found in Australia, Indonesia, and Malaysia: K. abnormis, K. longispina, and K. tuberosa.
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.
Martensinus is a genus of Asian dwarf spiders that was first described by J. Wunderlich in 1973. As of May 2019 it contains only two species, both found in Nepal: M. annulatus and M. micronetiformis.
Moebelotinus is a monotypic genus of Asian dwarf spiders containing the single species, Moebelotinus transbaikalicus. It was first described by J. Wunderlich in 1995, and has only been found in Mongolia and Russia.
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.
Sinolinyphia is a monotypic genus of East Asian sheet weavers containing the single species, Sinolinyphia henanensis. It was first described by J. Wunderlich & S. Q. Li in 1995, and has only been found in China.
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.
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.
