Oonopidae, also known as goblin spiders, is a family of spiders consisting of over 1,600 described species in about 113 genera worldwide, with total species diversity estimated at 2000 to 2500 species. The type genus of the family is OonopsKeyserling, 1835.
Leptonetidae is a relatively primitive family of spiders first described by Eugène Simon in 1890. It is made up of tiny haplogyne spiders, meaning they lack the hardened external female genitalia. Their six eyes are arranged in a semicircle of four in front and two behind. Many live in caves or in leaf litter around the Mediterranean, and in Eurasia, Japan and southern North America.
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.
Idiopidae, also known as armored trapdoor spiders, is a family of mygalomorph spiders first described by Eugène Simon in 1889. They have a large body similar to tarantulas.
Barychelidae, also known as brushed trapdoor spiders, is a spider family with about 300 species in 42 genera. Most spiders in this family build trapdoor burrows. For example, the 20 millimetres (0.79 in) long Sipalolasma builds its burrow in rotted wood, with a hinged trapdoor at each end. The 10 millimetres (0.39 in) long Idioctis builds its burrow approximately 5 centimetres (2.0 in) deep, just below the high tide level, sealing the opening with a thin trapdoor.
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.
Telemidae, also known as long-legged cave spiders, is a family of small haplogyne spiders. Most are cave dwelling spiders with six eyes, though some do not have any eyes at all. There are about 85 described species in ten genera.
Agelena is a genus of agelenid spiders first described by Charles Athanase Walckenaer in 1805. Sometimes referred to as Eurasian grass spiders, they trap their prey by weaving entangling non-sticky funnel webs. They are limited to the Old world, occurring from Africa to Japan.
Troglohyphantes is a genus of sheet weavers that was first described by G. Joseph in 1881. The genus name is a combination of the Ancient Greek τρώγλη (troglo-), meaning "cave (dweller)", and -hyphantes, a common ending for linyphiid genera.
Smeringopus is a genus of cellar spiders that was first described by Eugène Louis Simon in 1890.
Lepthyphantes is a genus of dwarf spiders that was first described by Anton Menge in 1866.
Apneumonella is a genus of long-legged cave spiders that was first described by L. Fage in 1921. It is one of several genera, including Telema, Usofila, and Cangoderces, whose relationship within the family and to these other genera is still poorly understood.
Hybosida is a genus of East African palp-footed spiders that was first described by Eugène Louis Simon in 1898.
Phrynichidae is a family of arachnids.
Leptoneta is a genus of leptonetids that was first described by Eugène Louis Simon in 1872.
Blanioonops is a genus of spiders in the family Oonopidae. It was first described in 1922 by Simon & Fage. As of 2016, it contains only one species, Blanioonops patellaris, found in East Africa.
Phyxelida is a genus of araneomorph spiders in the family Phyxelididae, and was first described by Eugène Louis Simon in 1894.
Asthenargus is a genus of dwarf spiders that was first described by Eugène Louis Simon & L. Fage in 1922.
Callitrichia is a genus of dwarf spiders that was first described by L. Fage in 1936.
