| Xenoctenidae | |
|---|---|
 | |
| Unidentified species of Xenoctenus | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Araneomorphae |
| Family: | Xenoctenidae Ramírez & Silva-Dávila, 2017 [1] |
| Diversity | |
| 4 genera, 33 species | |
Xenoctenidae is a family of araneomorph spiders separated from Miturgidae in 2017. [2]
As of April 2019 [update] , the World Spider Catalog accepts the following genera and species: [1]
Incasoctenus Mello-Leitão, 1942
Odo Keyserling, 1887
Paravulsor Mello-Leitão, 1922
Xenoctenus Mello-Leitão, 1938
Theridion is a genus of tangle-web spiders with a worldwide distribution. Notable species are the Hawaiian happy face spider (T. grallator), named for the iconic symbol on its abdomen, and T. nigroannulatum, one of few spider species that lives in social groups, attacking prey en masse to overwhelm them as a team.
Hogna is a genus of wolf spiders with more than 200 described species. It is found on all continents except Antarctica.
Tmarus is a genus of crab spiders, comprising 227 species:
Metepeira is a genus of orb-weaver spiders first described by F. O. Pickard-Cambridge in 1903. The name is derived from the Ancient Greek μετά and the obsolete genus name Epeira, denoting a genus similar to Epeira.
Camillina is a genus of ground spiders that was first described by Lucien Berland in 1919. They are very similar to sister genus Zelotes.
Ctenus is a genus of wandering spiders first described by Charles Athanase Walckenaer in 1805. It is widely distributed, from South America through Africa to East Asia. Little is known about the toxic potential of the genus Ctenus; however, Ctenus medius has been shown to share some toxic properties with Phoneutria nigriventer, such as proteolytic, hyaluronidase and phospholipase activities, in addition to producing hyperalgesia and edema. The venom of C. medius also interferes with the complement system in concentrations in which the venom of P. nigriventer is inactive, indicating that some species in the genus may have a medically significant venom. The venom of C. medius interferes with the complement component 3 (C3) of the complement system; it affects the central factor of the cascades of the complement, and interferes with the lytic activity of this system, which causes stronger activation and consumption of the complement components. Unlike C. medius, the venom of P. nigriventer does not interfere with lytic activity.
Corinna is a genus of corinnid sac spiders first described by Carl Ludwig Koch in 1841. They are found in Mexico and south to Brazil, and with selected species found in Africa.
Eustala is a genus of orb-weaver spiders first described by Eugène Simon in 1895.
Metagonia is a genus of cellar spiders that was first described by Eugène Louis Simon in 1893.
Odo is a genus of spiders in the family Xenoctenidae, containing 25 species occurring in Central and South America, and Australia.