Scaffold web spiders (Nesticidae) is a family of araneomorph spiders closely allied with tangle web spiders. Like the "Theridiidae", these spiders have a comb of serrated bristles on the hind tarsi that are used to pull silk bands from the spinnerets. It contains 16 genera and about 300 species, many of which are associated with caves or overhangs. The genus Nesticus is the type for the family and is found throughout the world. The related Eidmannella has speciated considerably in Texas caves and includes some extremely localized species that are considered threatened. One species, Eidmannella pallida, is found in caves and under overhangs, but also in agricultural fields and other habitats away from such restricted areas. The genus Carpathonesticus is found in central Eurasia.
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.
Ochyroceratidae is a six-eyed spider family, with 165 described species in ten genera. They are common inhabitants of caves and the tropical forest litter of South Africa, the Caribbean, Asia and South America. Considered an ecological counterpart of the Linyphiidae of the northern temperate zone, species are especially diverse in the Indo-Pacific region.
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.
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.
Phylloneta is a genus of comb-footed spiders formerly considered a sub-genus of Allotheridion, and raised to genus status in 2008. The type species was first described by Eugen von Keyserling in 1884 as Theridion pictipes. As of September 2019 it contains three species and two subspecies with a holarctic distribution: P. impressa, P. pictipes, P. sisyphia, P. s. foliifera, and P. s. torandae.
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.
Nasoona is a genus of dwarf spiders that was first described by G. H. Locket in 1982.
Oia is a genus of Asian dwarf spiders that was first described by J. Wunderlich in 1973.
Platyspira is a monotypic genus of East Asian sheet weavers containing the single species, Platyspira tanasevitchi. It was first described by Y. J. Song & S. Q. Li in 2009, and has only been found in China.
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.
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.
Ternatus is a genus of East Asian sheet weavers that was first described by N. Sun, B. Li & L. H. Tu in 2012. As of May 2019 it contains only two species, both found in China: T. malleatus and T. siculus.
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.
Chthonopes is a genus of southeast Asian ray spiders that was first described by J. Wunderlich in 2011. As of June 2020 it contains three species, found in caves of Laos, but can likely also be found in India and China: C. cavernicola, C. jaegeri, and C. thakekensis. They have several adaptations for darker environments, including pale coloration, long legs, and reduced lenses.
Troglocoelotes is a genus of funnel weaver spiders first described in 2019 by Zhao & Li.
