| Migas | |
|---|---|
 | |
| Female holotype specimen of Migas insularis | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Mygalomorphae |
| Family: | Migidae |
| Genus: | Migas L. Koch, 1873 [1] |
| Diversity [1] | |
| 34 species | |
Migas is a genus of spiders in the family Migidae. Most species are found only in New Zealand, with three found in Australia and one species, Migas affinis , in New Caledonia. [1]
The genus Migas was erected by Ludwig Koch in 1873, for the species Migas paradoxus . [1] [2] Of the 34 species accepted as of October 2017 [update] , 26 were described by C. L. Wilton in 1968, all from New Zealand. [1] Many of the species are very similar in external appearance, being distinguished by the internal structure of the female genitalia. [3]
As of October 2017 [update] , the World Spider Catalog accepted the following extant species: [1]
The family Dipluridae, known as curtain-web spiders are a group of spiders in the infraorder Mygalomorphae, that have two pairs of booklungs, and chelicerae (fangs) that move up and down in a stabbing motion. A number of genera, including that of the Sydney funnel-web spider (Atrax), used to be classified in this family but have now been moved to Atracidae.
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 inhabit the intertidal zone. 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 and the family Toxopidae was separated from it. 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.
Miturgidae is a family of araneomorph spiders that includes nearly 170 species in 29 genera worldwide. First described by Eugène Simon in 1886, it has been substantially revised, and includes the previous family Zoridae as a synonym, and excludes the family Xenoctenidae. Several genera have also been removed, such as the large genus Cheiracanthium, which was transferred to the Cheiracanthiidae.
Hexathelidae is a family of mygalomorph spiders. It is one of a number of families and genera of spiders known as tunnelweb or funnel-web spiders. In 2018, the family was substantially reduced in size by genera being moved to three separate families: Atracidae, Macrothelidae and Porrhothelidae.
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, 2023, the family Amaurobiidae includes 286 species in 50 genera.
Dolomedes is a genus of large spiders of the family Pisauridae. They are also known as fishing spiders, raft spiders, dock spiders or wharf spiders. Almost all Dolomedes species are semiaquatic, with the exception of the tree-dwelling D. albineus of the southeastern United States. Many species have a striking pale stripe down each side of the body.
Barychelidae, also known as brushed trapdoor spiders, is a spider family with about 300 species in 39 genera.
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.
Masteria is a genus of curtain web spiders that was first described by L. Koch in 1873. They occur in the tropics of Central to South America, Asia and Micronesia, with one species found in Australia. M. petrunkevitchi males are 4 millimetres (0.16 in) long and females are 5 millimetres (0.20 in) long. M. lewisi, M. barona, and M. downeyi are slightly smaller and have only six eyes. Most species in the genus have six eyes, but two have no eyes.
Stanwellia is a genus of South Pacific mygalomorph spiders in the family Pycnothelidae. It was first described by W. J. Rainbow & R. H. Pulleine in 1918. Originally placed with the curtain-web spiders, it was transferred to the funnel-web trapdoor spiders in 1985, then to the Pycnothelidae in 2020. It is a senior synonym of Aparua.
Uliodon is a genus of spiders endemic to New Zealand and possibly Australia. They are commonly referred to as vagrant spiders. Vagrant spiders vary in colour from dark brown to almost black, they typically have a body length of 20mm and a 50mm leg span. When alive, the interior of the male's pedipalp are brightly coloured.
Desis is a genus of intertidal spiders that was first described by Charles Athanase Walckenaer in 1837. Species of the genus are found in Australasia, the Pacific, Japan, eastern and southern Africa, and India. They are marine spiders, living in the intertidal zone and only emerging at the ebb tide to hunt for invertebrates including shrimp. When submerged during high tides, they stay in an air chamber sealed with silk, and breathe its air.
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, also known as triangular spiders, 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.
Idioctis is a genus of brushed trapdoor spiders that was first described by L. Koch in 1874.
Nyssus is a genus of corinnid sac spiders first described by Charles Athanase Walckenaer in 1805.
Migas paradoxus is a species of mygalomorph spider endemic to New Zealand.