Spiders of the United States

species of arachnid

species of spider

species of arachnid

Hypochilus is a genus of North American lampshade spiders that was first described by George Marx in 1888.

species of arachnid

species of jumping spider in the genus Phidippus

species of arachnid

Brommella is a genus of cribellate araneomorph spiders in the family Cicurinidae, and was first described by Albert Tullgren in 1948.

Anthrobia is a genus of North American dwarf spiders that was first described by T. Tellkampf in 1844.

species of arachnid

Acacesia is a genus of orb-weaver spiders first described by Eugène Simon in 1895. It contains six species with a mostly neotropical distribution, ranging from South America to Mexico. One species, A. hamata, is found in the US as well.

Antrodiaetus is a genus of American and Japanese folding trapdoor spiders first described by Anton Ausserer in 1871. The name is a combination of the Greek "antrodiaitos" (αντροδιαιτος), meaning "living in caves", "antron" (αντρον), meaning "cave", and "diaita (διαιτα), meaning "way of life, dwelling".

Paramarpissa is a genus of North American jumping spiders that was first described by Frederick Octavius Pickard-Cambridge in 1901. Originally considered a synonym of Pseudicius, it was separated into its own genus in 1999.

Eucteniza ( ) is a genus of trapdoor spiders in the family Euctenizidae containing at least 14 species occurring in Mexico and the southern United States. Species are distinguished by a softened rear portion of the carapace, and males possess large spines on the first two pairs of walking legs that are used to hold females during mating. Like other trapdoor spiders they create burrows with a hinged lid, from which they await passing insects and other arthropods to prey upon. Many species are known from only one or two localities, or from only male specimens. More species are expected to be dis

Rhetenor is a genus of beetle mimicking jumping spiders that was first described by Eugène Louis Simon in 1902. it contains only two species, found only in the United States and Brazil: R. diversipes and R. texanus. The name is a reference to Rhetnor, a character in Ovid's Metamorphoses.

species of arachnid

Aphileta is a genus of dwarf spiders that was first described by J. E. Hull in 1920. it contains only three species in the United States and Canada: A. centrasiatica, A. microtarsa, and A. misera.

species of arachnid

Metopobactrus is a genus of dwarf spiders that was first described by Eugène Louis Simon in 1884.

Anacornia is a genus of North American dwarf spiders that was first described by Ralph Vary Chamberlin & Vaine Wilton Ivie in 1933. it contains only two species, both found in the United States: A. microps and A. proceps.

Wubana is a genus of American sheet weavers that was first described by Ralph Vary Chamberlin in 1919.

Zygottus is a genus of American sheet weavers that was first described by Ralph Vary Chamberlin in 1949.

Scironis is a genus of North American sheet weavers that was first described by S. C. Bishop & C. R. Crosby in 1938. it contains only two species, both found in the United States: S. sima and S. tarsalis.

Agelenopsis, commonly known as the American grass spiders, is a genus of funnel weavers described by C.G. Giebel in 1869. They weave sheet webs that have a funnel shelter on one edge. The web is not sticky, but these spiders make up for that by running very rapidly.

species of arachnid

species of arachnid

Terralonus is a genus of American jumping spiders that was first described by Wayne Paul Maddison in 1996.

Goneatara is a genus of North American dwarf spiders that was first described by S. C. Bishop & C. R. Crosby in 1935.

Aliatypus is a genus of North American folding trapdoor spiders first described by Chas. Piper Smith in 1908. They resemble members of Ctenizidae in morphology and behavior, but this is due to convergent evolution rather than direct relation. They are most closely related to members of Antrodiaetus, which build collar doors. It is likely that the shift from using collar doors to using trapdoors is what allowed them to survive in hot, dry conditions where their closest relatives could not.

species of arachnid

species of arachnid

Tusukuru is a genus of sheet weavers that was first described by K. Y. Eskov in 1993.

species of arachnid

Cyrtauchenius is a genus of wafer trapdoor spiders that was first described by Tamerlan Thorell in 1869. Originally placed with the Ctenizidae, it was moved to the Cyrtaucheniidae in 1985.

Anibontes is a genus of dwarf spiders native to North America, that was first described by Ralph Vary Chamberlin in 1924. , the genus comprises only two species, both found in the United States: A. longipes and A. mimus.

species of arachnid

Myrmekiaphila is a genus of North American mygalomorph trapdoor spiders in the family Euctenizidae, and was first described by G. F. Atkinson in 1886. All described species are endemic to the southeastern United States.

species of arachnid

Anasaitis is a genus of jumping spiders (family Salticidae) that was first described by E. B. Bryant in 1950. The name is derived from the salticid genus Saitis.

Hexura is a genus of American folding trapdoor spiders that was first described by Eugène Louis Simon in 1884.. Originally placed with Mecicobothriidae, it was moved to Antrodiaetidae in 2019.

species of arachnid

species of arachnid

species of arachnid

Promyrmekiaphila is a genus of North American mygalomorph spiders in the family Euctenizidae. The genus was first described by E. Schenkel-Haas in 1950. it contains only two species, both found in the United States: Promyrmekiaphila clathrata and Promyrmekiaphila winnemem.

species of arachnid

species of spider

Calisoga is a genus of spiders in the family Nemesiidae, first described in 1937 by Ralph Vary Chamberlin. , it contains five species, all in the USA.

species of arachnid

species of arachnid

species of arachnid

species of arachnid

species of arachnid

Mexigonus is a genus of North American jumping spiders that was first described by G. B. Edwards in 2003. The name is a reference to Mexico, where the first identified species were found.

species of arachnid

species of arachnid

Poultonella is a genus of American jumping spiders that was first described by George and Elizabeth Peckham in 1909. it contains only two species, found only in the United States: P. alboimmaculata and P. nuecesensis. It is named in honor of Edward Bagnall Poulton.

Barronopsis is a genus of funnel weavers first described by R. V. Chamberlin and Wilton Ivie in 1941.

species of arachnid

species of arachnid

species of arachnid