Crevice weaver spiders (Filistatidae) comprise cribellate spiders with features that have been regarded as "primitive" for araneomorph spiders. They are weavers of funnel or tube webs. The family contains 18 genera and more than 120 described species worldwide.
The Tooth Cave spider, formerly Neoleptoneta myopica, now Tayshaneta myopica, is a 1.6 mm long spider in the family Leptonetidae. It is endemic to limestone caves near Austin, Texas in the United States and is considered an endangered species.
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.
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.
Mysmenidae is a spider family with about 180 described species in seventeen genera. The family is one of the least well known of the orb-weaving spiders because of their small size and cryptic behaviour. These spiders are found in humid habitats such as among leaf litter and in caves.
Neoleptoneta is a genus of North American leptonetids that was first described by Paolo Marcello Brignoli in 1972.
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.
Appaleptoneta is a genus of North American Leptonetids that was first described by Norman I. Platnick in 1986.
Archoleptoneta is a genus of North American spiders that was first described by Carl Eduard Adolph Gerstaecker in 1974. As of May 2019 it contains only two species, both found in the United States: A. gertschi and A. schusteri.
Calileptoneta is a genus of North American Leptonetids that was first described by Norman I. Platnick in 1986.
Chisoneta is a genus of North American Leptonetids that was first described by J. Ledford in 2011.
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.
Ozarkia is a genus of North American leptonetids that was first described by J. Ledford in 2011.
Tayshaneta is a genus of North American leptonetids that was first described by J. Ledford in 2011.
Trachelas is a genus of araneomorph spiders originally placed with the Trachelidae, and later moved to the Corinnidae.
Anopsicus is a genus of cellar spiders that was first described by Ralph Vary Chamberlin & Vaine Wilton Ivie in 1938.
Modisimus is a genus of cellar spiders that was first described by Eugène Louis Simon in 1893.
Apollophanes is a genus of running crab spiders that was first described by Octavius Pickard-Cambridge in 1898.
