Uloboridae is a family of nonvenomous spiders, known as cribellate orb weavers or hackled orb weavers. Their lack of venom glands is a secondarily evolved trait. Instead, they wrap their prey thoroughly in silk, cover it in regurgitated digestive enzymes, and then ingest the liquified body.
Desidae is a family of spiders, some of which are known as intertidal spiders. The family is named for the genus Desis, members of which live in a very unusual location — between the tides. The family has been reevaluated in recent years and now includes inland genera and species as well, such as Badumna and Phryganoporus. In 2017, the family Amphinectidae was merged into Desidae. The family Toxopidae has been separated off. Those intertidal spiders that are truly marine commonly live in barnacle shells, which they seal up with silk; this allows them to maintain an air bubble during high tide. They emerge at night to feed on various small arthropods that live in the intertidal zone.
The Agelenidae are a large family of spiders in the suborder Araneomorphae. Well-known examples include the common "grass spiders" of the genus Agelenopsis. Nearly all Agelenidae are harmless to humans, but the bite of the hobo spider may be medically significant, and some evidence suggests it might cause necrotic lesions. However, the matter remains subject to debate. The most widely accepted common name for members of the family is funnel weaver.
Titanoecidae is a family of araneomorph spiders first described by Pekka T. Lehtinen in 1967. It is fairly widespread in the New World and Eurasia with five genera and more than 50 species worldwide. These are mostly dark-colored builders of "woolly" (cribellate) silk webs. Several species are found at relatively high altitudes in mountain ranges and may be very common in such habitats.
Amaurobiidae is a family of three-clawed cribellate or ecribellate spiders found in crevices and hollows or under stones where they build retreats, and are often collected in pitfall traps. Unlidded burrows are sometimes quite obvious in crusty, loamy soil. They are difficult to distinguish from related spiders in other families, especially Agelenidae, Desidae and Amphinectidae. Their intra- and interfamilial relationships are contentious. According to the World Spider Catalog, 2019, the family Amaurobiidae includes about 275 species in 49 genera.
Zoropsidae, also known as false wolf spiders for their physical similarity to wolf spiders, is a family of cribellate araneomorph spiders first described by Philipp Bertkau in 1882. They can be distinguished from wolf spiders by their two rows of eyes that are more equal in size than those of Lycosidae.
Dictynidae is a family of cribellate, hackled band-producing spiders first described by Octavius Pickard-Cambridge in 1871. Most build irregular webs on or near the ground, creating a tangle of silken fibers among several branches or stems of one plant.
Tetrablemmidae, sometimes called armored spiders, is a family of tropical araneomorph spiders first described by Octavius Pickard-Cambridge in 1873. It contains 126 described species in 29 genera from southeast Asia, with a few that occur in Africa and Central and South America. Pacullidae was incorporated into this family in 1981, but was later restored as a separate family in a 2016 phylogenetic study.
Nicodamidae is a family of araneomorph spiders with about thirty species in seven genera. They are small to medium-sized spiders found near the ground of eucalypt forests in small sheet webs. The species of this family are only present in Australia and Papua New Guinea. In most cases the cephalothorax and legs are uniformly red and the abdomen black, for which these species are sometimes called the "red and black spider".
Phyxelididae is a family of araneomorph spiders first described by Pekka T. Lehtinen in 1967 as a subfamily of Amaurobiidae, and later elevated to family status as a sister group of Titanoecidae.
Stiphidiidae, also called sheetweb spiders, is a family of araneomorph spiders first described in 1917, Most species are medium size and speckled brown with long legs. All members of this family occur in New Zealand and Australia except for Asmea. They build a horizontal sheet-like web under rocks, hence the name "sheetweb spiders".
Mexitlia is a genus of North American cribellate araneomorph spiders in the Dictynidae family, and was first described by Pekka T. Lehtinen in 1967. As of May 2019 it contains only three species: M. altima, M. grandis, and M. trivittata.
Marplesia is a genus of South Pacific sheetweb spiders first described by Pekka T. Lehtinen in 1967. As of April 2019 it contains only two species, both found in New Zealand.
Forsterina is a genus of South Pacific intertidal spiders that was first described by Pekka T. Lehtinen in 1967.
Taurongia is a genus of Australian intertidal spiders that was first described by Henry Roughton Hogg in 1901. As of May 2019 it contains only two species: T. ambigua and T. punctata. Originally placed with the Amaurobiidae, it was moved to the intertidal spiders in 1967.
Sudesna is a genus of cribellate araneomorph spiders in the Dictynidae family, and was first described by Pekka T. Lehtinen in 1967.
Obatala is a genus of African tangled nest spiders containing the single species, Obatala armata. It was first described by Pekka T. Lehtinen in 1967, and has only been found in South Africa.
Shango is a monotypic genus of African cribellate araneomorph spiders in the Dictynidae family containing the single species, Shango capicola. It was first described by Pekka T. Lehtinen in 1967, and has only been found in South Africa.
Intihuatana is a monotypic genus of South American dwarf sheet spiders containing the single species, Intihuatana antarctica. It was first described by Pekka T. Lehtinen in 1967, and has only been found in Argentina.
Megadictynidae is a family of araneomorph spiders first described by Pekka T. Lehtinen in 1967. They are endemic to New Zealand.
