Theridiidae, also known as the tangle-web spiders, cobweb spiders and comb-footed spiders, is a large family of araneomorph spiders first described by Carl Jakob Sundevall in 1833. This diverse, globally distributed family includes over 3,000 species in 124 genera, and is the most common arthropod found in human dwellings throughout the world.
Orb-weaver spiders are members of the spider family Araneidae. They are the most common group of builders of spiral wheel-shaped webs often found in gardens, fields, and forests. The English word orb can mean "circular", hence the English name of the group. Araneids have eight similar eyes, hairy or spiny legs, and no stridulating organs.
Long-jawed orb weavers or long jawed spiders (Tetragnathidae) are a family of araneomorph spiders first described by Anton Menge in 1866. They have elongated bodies, legs, and chelicerae, and build small orb webs with an open hub with few, wide-set radii and spirals with no signal line or retreat. Some species are often found in long vegetation near water.
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.
Ozyptila is a genus of crab spiders that was first described by Eugène Louis Simon in 1864. It has been misspelled as "Oxyptila" in multiple accounts.
Argyrodes, also called dewdrop spiders, is a genus of comb-footed spiders that was first described by Eugène Louis Simon in 1864. They occur worldwide, and are best known for their kleptoparasitism. They can spin their own webs, but tend to invade and reside in their hosts' webs. This relationship can be commensal or even mutual if the dewdrop spider feeds on small trapped insects that are not eaten by the host. Some species can even prey upon the host.
Aphantochilus is a genus of ant-mimicking crab spiders that was first described by Octavius Pickard-Cambridge in 1871. As of June 2020 it contains three species, found in Paraguay, Brazil, Argentina, and Panama: A. cambridgei, A. inermipes, and A. rogersi. It is a senior synonym of Cryptoceroides.
Dolichognatha is a genus of tropical and subtropical long-jawed orb-weavers that was first described by Octavius Pickard-Cambridge in 1869. Originally placed with the Archaeidae, it was transferred to the Araneidae in 1967, and to the Tetragnathidae in 1981.
Semljicola is a genus of sheet weavers that was first described by Embrik Strand in 1906.
Glenognatha is a genus of long-jawed orb-weavers that was first described by Eugène Louis Simon in 1887. It was considerably revised in 2016.
Sidymella is a genus of spider in the family Thomisidae, found in South America, Australia and New Zealand. It was originally named Sidyma, but this was later found to have been used already for a genus of moths.
Obrimona is a monotypic genus of Asian dwarf spiders containing the single species, Obrimona tennenti. It was first described by Embrik Strand in 1934, and has only been found in Sri Lanka.
Pickardinella is a monotypic genus of Mexican long-jawed orb-weavers containing the single species, Pickardinella setigera. The species was first described by Frederick Octavius Pickard-Cambridge under the name Leucauge setigera, and was moved to its own genus in 1951. Physically, they resemble members of Opadometa and Leucauge. Males are very small, only growing up to about 2 millimetres (0.079 in) long. A female has never been found.
Zygiometella is a monotypic genus of Asian long-jawed orb-weavers containing the single species, Zygiometella perlongipes. The species was first described by O. Pickard-Cambridge in 1872 under the name "Tetragnatha perlongipes", and it was transferred to its own genus in 1995.
Leviellus, synonym Stroemiellus, is a genus of orb-weaver spiders first described by J. Wunderlich in 2004.
Diplocephalus is a genus of sheet weavers first described by Philipp Bertkau in 1883.
Collinsia is a genus of dwarf spiders that was first described by Octavius Pickard-Cambridge in 1913.
Allende is a genus of South American long-jawed orb-weavers that was first described by F. Álvarez-Padilla in 2007.
Metabus is a genus of long-jawed orb-weavers that was first described by Octavius Pickard-Cambridge in 1899.
