Corythalia is a genus of the spider family Salticidae. Most of the 74 described species occur in Central and South America, with two species reaching north into the USA.
Lyssomanes is a spider genus of the Salticidae family. About 90 species have been described, ranging from South and Central America, up to the southern United States.
Micrathena is a genus of orb-weaver spiders first described by Carl Jakob Sundevall in 1833. It contains more than a hundred species, most of them Neotropical woodland orb-weavers. The name is derived from the Greek "micro", meaning "small", and the goddess Athena. It includes over a hundred species, including four in the United States and Canada. Among these four species, female spined micrathena have five pairs of conical tubercles, female M. mitrata have two short posterior pairs, and female arrow-shaped micrathena have three pairs. Species with extremely long spines evolved at least eight times in the genus Micrathena and likely function as anti-predator defenses. The only species recorded from Canada is M. sagittata, found in Ontario.
Eustala is a genus of orb-weaver spiders first described by Eugène Simon in 1895.
Metazygia is a genus of orb-weaver spiders first described by F. O. Pickard-Cambridge in 1904. They physically resemble members of Nuctenea, but they do not have fine setae on the carapace.
Ocrepeira is a genus of orb-weaver spiders first described by George Marx in 1883.
Wagneriana is a genus of orb-weaver spiders first described by F. O. Pickard-Cambridge in 1904.
Metagonia is a genus of cellar spiders that was first described by Eugène Louis Simon in 1893.
Epicadus is a genus of crab spiders first described by Eugène Simon in 1895. It is considered a senior synonym of Tobias.
Alpaida is a genus of South American orb-weaver spiders first described by Octavius Pickard-Cambridge in 1889.
