Migidae, also known as tree trapdoor spiders, is a family of spiders with about 100 species in eleven genera. They are small 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.
Anapidae is a family of rather small spiders with 231 described species in 58 genera. It includes the former family Micropholcommatidae as the subfamily Micropholcommatinae. Most species are less than 2 millimetres (0.079 in) long.
Idiosoma is a genus of Australian armored trapdoor spiders that was first described by Anton Ausserer in 1871. Originally placed with the Ctenizidae, it was moved to the armored trapdoor spiders in 1985. The name is derived from the Greek ἴδιος (idios), meaning "individual, unique", and σῶμα (soma), meaning "body", referring to the distinctive structure of the abdomen.
The spider genus Aname is endemic to Australia, with one species found only on Tasmania. It contains the black wishbone spider, A. atra.
Arkys, also known as triangular spider or ambush spider, is a genus of Australian araneomorph spiders in the Arkyidae family, first described by Charles Athanase Walckenaer in 1837. They are often small, with a triangular shaped abdomen, and can be found in Australia and some of its surrounding islands. They don't build webs, but can often be found on leaves and tips of flower heads. Their egg sacs are pinkish-orange and spherical, and are made late in the summer.
Arbanitis is a genus of Australian armored trapdoor spiders that was first described by Ludwig Carl Christian Koch in 1874.
Blakistonia is a genus of Australian armored trapdoor spiders that was first described by Henry Roughton Hogg in 1902.
Cataxia is a genus of Australian armored trapdoor spiders that was first described by W. J. Rainbow in 1914.
Euoplos is a genus of Australian armored trapdoor spiders that was first described by W. J. Rainbow in 1914.
Plebs is a genus of orb-weaver spiders first described by M. M. Joseph & V. W. Framenau in 2012. Though many of its species have been moved around, a 2012 taxonomic revision suggested that these spiders compris a monophyletic genus of closely related spiders that evolved in Australia and, through subsequent movements, spread into parts of Asia and Pacific islands.
Menneus is a genus of net-casting spiders that was first described by Eugène Simon in 1876. It includes the former genera Avella and Avellopsis. Species are found in Australia, New Caledonia, and eastern and southern Africa. Originally placed with the cribellate orb-weavers, it was moved to the Deinopidae in 1967.
Hemicloea is a genus of South Pacific flat spiders that was first described by Tamerlan Thorell in 1870. Originally placed with the ground spiders, it was moved to the Trochanteriidae in 2018.
Arkyidae is a family of araneomorph spiders first described by Ludwig Carl Christian Koch in 1872 as a subfamily of Araneidae, and later elevated to a full family in 2017.
Austrarchaea is a genus of Australian assassin spiders first described by Raymond Robert Forster & Norman I. Platnick in 1984.
Anarchaea is a genus of spiders in the Malkaridae family. It was first described in 2006 by Rix. As of 2017, it contains 4 species, all found in Australia.
Nanarchaea is a genus of spiders in the Malkaridae family. It was first described in 2006 by Rix. As of 2017, it contains 2 Australian species.
Ozarchaea is a genus of spiders in the Malkaridae family. It was first described in 2006 by Rix. As of 2017, it contains 16 species.
