| Myrmecomelix | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Araneomorphae |
| Family: | Linyphiidae |
| Genus: | Myrmecomelix Millidge, 1993 [1] |
| Type species | |
| M. pulcher (Millidge, 1991) | |
| Species | |
2, see text | |
Myrmecomelix is a genus of South American dwarf spiders that was first described by Norman I. Platnick in 1993. [2]
As of May 2019 [update] it contains two species: [1]
Linyphiidae is a family of very small spiders comprising 4694 described species in 623 genera worldwide. This makes Linyphiidae the second largest family of spiders after the Salticidae. The family is poorly known; new genera and species are still being discovered throughout the world. The newest such genus is Himalafurca from Nepal, formally described in April 2021 by Tanasevitch. Because of the difficulty in identifying such tiny spiders, there are regular changes in taxonomy as species are combined or divided.
Mysmenopsis is a kleptoparasitic genus of tiny tropical and subtropical American spiders in the family Mysmenidae. Most live in the funnelwebs of spiders in the family Dipluridae. M. archeri lives on webs of a species in the family Pholcidae, M. capae and M. cienga have been observed living in Cyrtophora (Araneidae) webs. One reason why diplurid webs are preferred seems to be that they are persistent in time and space, sometimes spanning several years.
Caponiidae is a family of ecribellate haplogyne spiders that are unusual in a number of ways. They differ from other spiders in lacking book lungs and having the posterior median spinnerets anteriorly displaced to form a transverse row with the anterior lateral spinnerets. Most species have only two eyes, which is also unusual among spiders. A few species of Caponiidae variously have four, six or eight eyes. In some species the number of eyes will increase when the spiderling changes its skin as it grows towards adulthood.
Agyneta is a genus of dwarf spiders that was first described by J. E. Hull in 1911.
Eurymorion is a genus of South American dwarf spiders that was first described by Norman I. Platnick in 1993.
Labicymbium is a genus of South American dwarf spiders that was first described by Alfred Frank Millidge in 1991.
Laminacauda is a genus of dwarf spiders that was first described by Alfred Frank Millidge in 1985.
Echemoides is a genus of South American ground spiders that was first described by Cândido Firmino de Mello-Leitão in 1938. Originally placed with the ant spiders, it was moved to the ground spiders in 1993.
Asemostera is a genus of dwarf spiders that was first described by Eugène Louis Simon in 1898. Originally placed with the family Agelenidae, it was moved to the family Linyphiidae in 1965.
Dubiaranea is a genus of dwarf spiders that was first described by Cândido Firmino de Mello-Leitão in 1943.
Gravipalpus is a genus of South American dwarf spiders that was first described by Alfred Frank Millidge in 1991. As of May 2019 it contains only three species, found in Argentina, Brazil, and Peru: G. callosus, G. crassus, and G. standifer.
Notiohyphantes is a genus of dwarf spiders that was first described by Alfred Frank Millidge in 1985.
Novafrontina is a genus of dwarf spiders that was first described by Alfred Frank Millidge in 1991.
Paraletes is a genus of South American dwarf spiders that was first described by Alfred Frank Millidge in 1991.
Psilocymbium is a genus of South American sheet weavers that was first described by Alfred Frank Millidge in 1991.
Spanioplanus is a monotypic genus of South American sheet weavers containing the single species, Spanioplanus mitis. It was first described by Alfred Frank Millidge in 1991, and has only been found in Peru and Venezuela.
Sphecozone is a genus of sheet weavers that was first described by Octavius Pickard-Cambridge in 1871.
Turbinellina is a monotypic genus of South American sheet weavers containing the single species, Turbinellina nigra. It was first described by Norman I. Platnick in 1993, and is only found in Argentina and Chile.
Tutaibo is a genus of sheet weavers that was first described by Ralph Vary Chamberlin in 1916.