Leptonetidae is a family of small spiders adapted to live in dark and moist places such as caves. The family is relatively primitive having diverged around the Middle Jurassic period. They were first described by Eugène Simon in 1890.
Migidae, also known as tree trapdoor spiders, is a family of spiders with about 100 species in eleven genera. They are small to large spiders with little to no hair and build burrows with a trapdoor. Some species live in tree fern stems. They have a Gondwanan distribution, found almost exclusively on the Southern Hemisphere, occurring in South America, Africa, Madagascar, Australia, New Zealand and New Caledonia.
Austrochilidae is a small spider family with nine species in two genera. Austrochilus and Thaida are endemic to the Andean forest of central and southern Chile and adjacent Argentina.
The Dionycha are a clade of spiders (Araneomorphae:Entelegynae), characterized by the possession of two tarsal claws with tufts of hairs (setae) beside them, which produce strong adhesion, enabling some species to climb glass. The circumscription of the group has varied widely; a 2021 analysis resulted in about 20 families, including Salticidae, Gnaphosidae, and Clubionidae.
The Leptonetoidea are a superfamily of haplogyne araneomorph spiders with three families. Phylogenetic studies have provided weak support for the relationship among the families. The placement of one of the families within the Haplogynae has been questioned.
The Haplogynae or haplogynes are one of the two main groups into which araneomorph spiders have traditionally been divided, the other being the Entelegynae. Morphological phylogenetic studies suggested that the Haplogynae formed a clade; more recent molecular phylogenetic studies refute this, although many of the ecribellate haplogynes do appear to form a clade, Synspermiata.
Trogloraptor is a genus of large spiders found in the caves of southwestern Oregon. It is the sole genus in the family Trogloraptoridae, and includes only one species, Trogloraptor marchingtoni. These spiders are predominantly yellow-brown in color with a maximum leg span of 3 in (7.6 cm). They are remarkable for having hook-like claws on the raptorial last segments of their legs.
Darkoneta is a genus of spiders that was first described by J. M. Ledford & C. E. Griswold in 2010.
Montanineta is a monotypic genus of North American leptonetid spiders containing the single species, Montanineta sandra. It was first described by J. Ledford in 2011, and has only been found in the United States.
Tayshaneta is a genus of North American leptonetids that was first described by J. Ledford in 2011.
Paramigas is a genus of tree trapdoor spiders native to Madagascar. It was first described by Reginald Innes Pocock in 1895.
Zora pumila is a species of prowling spider in the family Miturgidae. It is found in the USA.
Walckenaeria directa is a species of dwarf spider in the family Linyphiidae. It is found in the US and Canada.
Euryopis texana is a species of cobweb spider in the family Theridiidae. It is found in the United States.
Ceratinops crenatus is a species of dwarf spider in the family Linyphiidae. It is found in the USA.
Habronattus icenoglei is a species of jumping spider. It is found in the southwestern United States and north-central Mexico.
Clubiona pallidula is a species of sac spider in the family Clubionidae. It is found in Europe, Caucasus, a range from Russia to Central Asia, and has been introduced into North America.
Uduba is a genus of Malagasy araneomorph spiders in the family Udubidae, first described by Eugène Simon in 1880.
Archoleptonetidae is a family of spiders in the order Araneae. There are two genera and about eight described species in Archoleptonetidae. They are known from the western USA, southern Mexico, Guatemala, and Panama. This family was formerly a subfamily of Leptonetidae.
