- family: Agelenidae
- family: Amphinectidae
- family: Antrodiaetidae
- family: Anyphaenidae
- genus: Alijassa
- genus: Anyphaena
- genus: Arachosia
- genus: Aysha
- genus: Iguarima
- genus: Lupettiana
- genus: Osoriella
- genus: Patrera
- genus: Pippuhana
- genus: Sanogasta
- genus: Sillus
- genus: Tasata
- genus: Teudis
- species: Teudis angusticeps (Keyserling, 1891)
- species: Teudis concolor (Keyserling, 1891)
- species: Teudis formosus (Keyserling, 1891)
- species: Teudis geminus Petrunkevitch, 1911
- species: Teudis griseus (Keyserling, 1891)
- species: Teudis lenis (Keyserling, 1891)
- species: Teudis opertaneus (Keyserling, 1891)
- species: Teudis parvulus (Keyserling, 1891)
- species: Teudis recentissimus (Keyserling, 1891)
- species: Teudis suspiciosus (Keyserling, 1891)
- species: Teudis tensipes (Keyserling, 1891)
- species: Teudis tensus (Keyserling, 1891)
- genus: Umuara
- genus: Wulfilopsis
- family: Araneidae
- genus: Acacesia
- genus: Acanthepeira
- genus: Aculepeira
- genus: Alpaida
- species: Alpaida acuta (Keyserling, 1865)
- species: Alpaida alticeps (Keyserling, 1879)
- species: Alpaida atomaria (Simon, 1895)
- species: Alpaida bicornuta (Taczanowski, 1878)
- species: Alpaida calotypa (Chamberlin, 1916)
- species: Alpaida carminea (Taczanowski, 1878)
- species: Alpaida championi (O. P.-Cambridge, 1889)
- species: Alpaida citrina (Keyserling, 1892)
- species: Alpaida conica O. P.-Cambridge, 1889
- species: Alpaida delicata (Keyserling, 1892)
- species: Alpaida erythrothorax (Taczanowski, 1873)
- species: Alpaida graphica (O. P.-Cambridge, 1889)
- species: Alpaida latro (Fabricius, 1775)
- species: Alpaida leucogramma (White, 1841)
- species: Alpaida marmorata (Taczanowski, 1873)
- species: Alpaida rostratula (Keyserling, 1892)
- species: Alpaida rubellula (Keyserling, 1892)
- species: Alpaida septemmammata (O. P.-Cambridge, 1889)
- species: Alpaida trilineata (Taczanowski, 1878)
- species: Alpaida trispinosa (Keyserling, 1892)
- species: Alpaida truncata (Keyserling, 1865)
- species: Alpaida variabilis (Keyserling, 1864)
- species: Alpaida veniliae (Keyserling, 1865)
- species: Alpaida versicolor (Keyserling, 1877)
- genus: Araneus
- species: Araneus alboventris (Emerton, 1884)
- species: Araneus anguinifer (Cambridge, 1904)
- species: Araneus arizonensis (Banks, 1900)
- species: Araneus bandelieri (Simon, 1891)
- species: Araneus bispinosus (Keyserling, 1885)
- species: Araneus bogotensis (Keyserling, 1864)
- species: Araneus cavaticus (Keyserling, 1881)
- species: Araneus concoloratus (Cambridge, 1904)
- species: Araneus corporosus (Keyserling, 1892)
- species: Araneus corticarius (Emerton, 1884)
- species: Araneus detrimentosus (O. P.-Cambridge, 1889)
- species: Araneus expletus (O. P.-Cambridge, 1889)
- species: Araneus flavus (O. P.-Cambridge, 1894)
- species: Araneus granadensis (Keyserling, 1864)
- species: Araneus guttatus (Keyserling, 1865)
- species: Araneus guttulatus (Walckenaer, 1842)
- species: Araneus habilis (O. P.-Cambridge, 1889)
- species: Araneus juniperi (Emerton, 1884)
- species: Araneus lechugalensis (Keyserling, 1883)
- species: Araneus lineatipes (O. P.-Cambridge, 1889)
- species: Araneus meropes (Keyserling, 1865)
- species: Araneus microsoma (Banks, 1909)
- species: Araneus miniatus (Walckenaer, 1842)
- species: Araneus niveus (Hentz, 1847)
- species: Araneus nordmanni (Thorell, 1870)
- species: Araneus ocellatulus (Roewer, 1942)
- species: Araneus omnicolor (Keyserling, 1893)
- species: Araneus pegnia (Walckenaer, 1842)
- species: Araneus phrygiatus (Walckenaer, 1842)
- species: Araneus pratensis (Emerton, 1884)
- species: Araneus rufipes (O. P.-Cambridge, 1889)
- species: Araneus saevus (L. Koch, 1872)
- species: Araneus sinistrellus (Roewer, 1942)
- species: Araneus stabilis (Keyserling, 1892)
- species: Araneus thaddeus (Hentz, 1847)
- species: Araneus trifolium (Hentz, 1847)
- species: Araneus unanimus (Keyserling, 1879)
- species: Araneus uniformis (Keyserling, 1879)
- species: Araneus unistriatus (McCook, 1894)
- species: Araneus venatrix (C. L. Koch, 1838)
- species: Araneus vincibilis (Keyserling, 1893)
- species: Araneus workmani (Keyserling, 1884)
- genus: Araniella
- genus: Argiope
- genus: Bertrana
- genus: Carepalxis
- genus: Chaetacis
- genus: Cyclosa
- genus: Epeiroides
- genus: Eriophora
- genus: Eustala
- genus: Heterognatha
- genus: Hypognatha
- genus: Hypsosinga
- genus: Kaira
- genus: Kapogea
- genus: Larinia
- genus: Larinioides
- genus: Mangora
- genus: Manogea
- genus: Mastophora
- genus: Metazygia
- species: Metazygia calix (Walckenaer, 1842)
- species: Metazygia crewi (Banks, 1903)
- species: Metazygia dubia (Keyserling, 1864)
- species: Metazygia erratica (Keyserling, 1883)
- species: Metazygia genialis (Keyserling, 1892)
- species: Metazygia gregalis (O. P.-Cambridge, 1889)
- species: Metazygia incerta (O. P.-Cambridge, 1889)
- species: Metazygia laticeps (O. P.-Cambridge, 1889)
- species: Metazygia nigrocincta (Cambridge, 1904)
- species: Metazygia pallidula (Keyserling, 1864)
- species: Metazygia rogenhoferi (Keyserling, 1878)
- species: Metazygia viriosa (Keyserling, 1892)
- species: Metazygia voluptifica (Keyserling, 1892)
- species: Metazygia wittfeldae (McCook, 1894)
- species: Metazygia zilloides (Banks, 1898)
- genus: Metepeira
- genus: Micrathena
- species: Micrathena agriliformis (Taczanowski, 1879)
- species: Micrathena brevispina (Keyserling, 1864)
- species: Micrathena digitata (C. L. Koch, 1839)
- species: Micrathena excavata (C. L. Koch, 1836)
- species: Micrathena fidelis (Banks, 1909)
- species: Micrathena flaveola (Perty, in C. L. Koch, 1839)
- species: Micrathena forcipata (Thorell, 1859)
- species: Micrathena funebris (Marx, in Banks, 1898)
- species: Micrathena furcata (Hahn, 1822)
- species: Micrathena furva (Keyserling, 1892)
- species: Micrathena horrida (Taczanowski, 1873)
- species: Micrathena lucasi (Keyserling, 1864)
- species: Micrathena militaris (Fabricius, 1775)
- species: Micrathena peregrinatorum (Holmberg, 1883)
- species: Micrathena plana (C. L. Koch, 1836)
- species: Micrathena pungens (Walckenaer, 1842)
- species: Micrathena raimondi (Taczanowski, 1879)
- species: Micrathena rufopunctata (Butler, 1873)
- species: Micrathena schreibersi (Perty, 1833)
- species: Micrathena spinosa (Linnaeus, 1758)
- species: Micrathena stuebeli (Karsch, 1886)
- species: Micrathena swainsoni (Perty, 1833)
- species: Micrathena triangularispinosa (De Geer, 1778)
- species: Micrathena vigorsi (Perty, 1833)
- genus: Molinaranea
- genus: Neoscona
- genus: Ocrepeira
- genus: Parawixia
- species: Parawixia audax (Blackwall, 1863)
- species: Parawixia bistriata (Rengger, 1836)
- species: Parawixia destricta (O. P.-Cambridge, 1889)
- species: Parawixia guatemalensis (O. P.-Cambridge, 1889)
- species: Parawixia honesta (O. P.-Cambridge, 1899)
- species: Parawixia hoxaea (O. P.-Cambridge, 1889)
- species: Parawixia hypocrita (O. P.-Cambridge, 1889)
- species: Parawixia kochi (Taczanowski, 1873)
- species: Parawixia monticola (Keyserling, 1892)
- species: Parawixia rigida (O. P.-Cambridge, 1889)
- species: Parawixia rimosa (Keyserling, 1892)
- species: Parawixia tredecimnotata Cambridge, 1904
- species: Parawixia undulata (Keyserling, 1892)
- species: Parawixia velutina (Taczanowski, 1878)
- genus: Scoloderus
- genus: Spilasma
- genus: Tatepeira
- genus: Verrucosa
- genus: Wagneriana
- genus: Wixia
- genus: Zygiella
- family: Caponiidae
- family: Clubionidae
- family: Corinnidae
- family: Ctenidae
- family: Cyrtaucheniidae
- family: Dictynidae
- family: Dipluridae
- family: Gnaphosidae
- family: Idiopidae
- family: Linyphiidae
- genus: Arcuphantes
- genus: Bathyphantes
- genus: Ceraticelus
- genus: Dubiaranea
- genus: Eridantes
- genus: Frontinella
- genus: Grammonota
- genus: Laminacauda
- genus: Linyphia
- species: Linyphia adstricta (Keyserling, 1886)
- species: Linyphia armata (Keyserling, 1891)
- species: Linyphia bicuspis (Cambridge, 1902)
- species: Linyphia bifasciata (Cambridge, 1902)
- species: Linyphia bisignata (Banks, 1909)
- species: Linyphia calcarifera (Keyserling, 1886)
- species: Linyphia clara (Keyserling, 1891)
- species: Linyphia cylindrata (Keyserling, 1891)
- species: Linyphia decorata (Keyserling, 1891)
- species: Linyphia duplicata (Cambridge, 1902)
- species: Linyphia falculifera (Cambridge, 1902)
- species: Linyphia ferentaria (Keyserling, 1886)
- species: Linyphia horaea (Keyserling, 1886)
- species: Linyphia hospita (Keyserling, 1886)
- species: Linyphia lambda (Cambridge, 1902)
- species: Linyphia limbata (Cambridge, 1902)
- species: Linyphia linguatula (Cambridge, 1902)
- species: Linyphia longiceps (Keyserling, 1891)
- species: Linyphia longispina (Cambridge, 1902)
- species: Linyphia ludibunda (Keyserling, 1886)
- species: Linyphia lurida (Keyserling, 1886)
- species: Linyphia maculosa (Banks, 1909)
- species: Linyphia nigrita (Cambridge, 1902)
- species: Linyphia obscurella Roewer, 1942
- species: Linyphia oligochronia (Keyserling, 1886)
- species: Linyphia peruana (Keyserling, 1886)
- species: Linyphia petrunkevitchi Roewer, 1942
- species: Linyphia postica (Banks, 1909)
- species: Linyphia rubriceps (Keyserling, 1891)
- species: Linyphia rustica (Cambridge, 1902)
- species: Linyphia simplicata (Cambridge, 1902)
- species: Linyphia trifalcata (Cambridge, 1902)
- species: Linyphia virgata (Keyserling, 1886)
- genus: Meioneta
- genus: Nasoona
- genus: Neomaso
- genus: Notiohyphantes
- genus: Novafrontina
- genus: Oedothorax
- genus: Ostearius
- genus: Pocadicnemis
- genus: Scotinotylus
- genus: Smermisia
- genus: Tenuiphantes
- genus: Wubana
- family: Lycosidae
- family: Mimetidae
- family: Miturgidae
- family: Nephilidae
- family: Oecobiidae
- family: Oonopidae
- family: Philodromidae
- family: Pholcidae
- family: Pisauridae
- family: Salticidae
- genus: Beata
- genus: Ceriomura
- genus: Chalcoscirtus
- genus: Chira
- genus: Compsodecta
- genus: Corythalia
- genus: Cylistella
- genus: Dendryphantes
- genus: Eris
- genus: Freya
- genus: Frigga
- genus: Gastromicans
- genus: Hasarius
- genus: Hentzia
- genus: Martella
- genus: Messua
- genus: Metaphidippus
- species: Metaphidippus apicalis Cambridge, 1901
- species: Metaphidippus bicavatus Cambridge, 1901
- species: Metaphidippus chalcedon (C. L. Koch, 1846)
- species: Metaphidippus cupreus Cambridge, 1901
- species: Metaphidippus fimbriatus (Cambridge, 1901)
- species: Metaphidippus inflatus Cambridge, 1901
- species: Metaphidippus iridescens Cambridge, 1901
- species: Metaphidippus longipalpus Cambridge, 1901
- species: Metaphidippus mandibulatus Cambridge, 1901
- species: Metaphidippus nigropictus Cambridge, 1901
- species: Metaphidippus ovatus Cambridge, 1901
- species: Metaphidippus pernotus (Petrunkevitch, 1911)
- genus: Mexigonus
- genus: Nagaina
- genus: Nycerella
- genus: Paraphidippus
- species: Paraphidippus basalis (Banks, 1904)
- species: Paraphidippus disjunctus (Banks, 1898)
- species: Paraphidippus fartilis (Peckham & Peckham, 1888)
- species: Paraphidippus fulgidus (C. L. Koch, 1846)
- species: Paraphidippus funebris (Banks, 1898)
- species: Paraphidippus incontestus (Banks, 1909)
- species: Paraphidippus inermis Cambridge, 1901
- species: Paraphidippus laniipes Cambridge, 1901
- species: Paraphidippus luteus (Peckham & Peckham, 1896)
- species: Paraphidippus mexicanus (Peckham & Peckham, 1888)
- species: Paraphidippus nigropilosus (Banks, 1898)
- species: Paraphidippus nitens (C. L. Koch, 1846)
- genus: Parnaenus
- genus: Pelegrina
- genus: Phanias
- genus: Phiale
- genus: Phidippus
- species: Phidippus aeneidens Taczanowski, 1878
- species: Phidippus ardens Peckham & Peckham, 1901
- species: Phidippus arizonensis (Peckham & Peckham, 1883)
- species: Phidippus audax (Hentz, 1845)
- species: Phidippus bidentatus Cambridge, 1901
- species: Phidippus californicus Peckham & Peckham, 1901
- species: Phidippus cardinalis (Hentz, 1845)
- species: Phidippus carneus Peckham & Peckham, 1896
- species: Phidippus carolinensis Peckham & Peckham, 1909
- species: Phidippus clarus Keyserling, 1885
- species: Phidippus comatus Peckham & Peckham, 1901
- species: Phidippus cruentus Cambridge, 1901
- species: Phidippus georgii Peckham & Peckham, 1896
- species: Phidippus insignarius C. L. Koch, 1846
- species: Phidippus johnsoni (Peckham & Peckham, 1883)
- species: Phidippus mystaceus (Hentz, 1846)
- species: Phidippus octopunctatus (Peckham & Peckham, 1883)
- species: Phidippus otiosus (Hentz, 1846)
- species: Phidippus princeps (Peckham & Peckham, 1883)
- species: Phidippus pruinosus Peckham & Peckham, 1909
- species: Phidippus pulcherrimus Keyserling, 1885
- species: Phidippus purpuratus Keyserling, 1885
- species: Phidippus putnami (Peckham & Peckham, 1883)
- species: Phidippus regius C. L. Koch, 1846
- species: Phidippus texanus Banks, 1906
- species: Phidippus tyrrelli Peckham & Peckham, 1901
- species: Phidippus whitmani Peckham & Peckham, 1909
- species: Phidippus workmani Peckham & Peckham, 1901
- genus: Plexippus
- genus: Rhene
- genus: Sitticus
- genus: Zygoballus
- family: Sicariidae
- family: Sparassidae
- genus: Heteropoda
- genus: Olios
- species: Olios annulatus (Cambridge, 1900)
- species: Olios attractus Petrunkevitch, 1911
- species: Olios audax (Banks, 1909)
- species: Olios bombilius (Cambridge, 1899)
- species: Olios crassus (Banks, 1909)
- species: Olios ensiger (Cambridge, 1900)
- species: Olios erroneus O. P.-Cambridge, 1890
- species: Olios fugiens (O. P.-Cambridge, 1890)
- species: Olios keyserlingi (Simon, 1880)
- species: Olios longipedatus Roewer, 1951
- species: Olios luteus (Keyserling, 1880)
- species: Olios minax (O. P.-Cambridge, 1896)
- species: Olios obtusus (Cambridge, 1900)
- species: Olios paraensis (Keyserling, 1880)
- species: Olios pellucidus (Keyserling, 1880)
- species: Olios puniceus (Simon, 1880)
- species: Olios sanctivincenti (Simon, 1897)
- species: Olios similis (O. P.-Cambridge, 1890)
- species: Olios simoni (O. P.-Cambridge, 1890)
- species: Olios stylifer (Cambridge, 1900)
- species: Olios velox (Simon, 1880)
- family: Tetragnathidae
- genus: Agriognatha
- genus: Chrysometa
- genus: Dolichognatha
- genus: Leucauge
- species: Leucauge argyrobapta (White, 1841)
- species: Leucauge branicki (Taczanowski, 1874)
- species: Leucauge longimana (Keyserling, 1881)
- species: Leucauge polita (Keyserling, 1893)
- species: Leucauge pulcherrima (Keyserling, 1865)
- species: Leucauge regnyi (Simon, 1897)
- species: Leucauge severa (Keyserling, 1893)
- species: Leucauge taczanowskii (Marx, in Keyserling, 1893)
- species: Leucauge turbida (Keyserling, 1893)
- species: Leucauge uberta (Keyserling, 1893)
- species: Leucauge volupis (Keyserling, 1893)
- genus: Mecynometa
- genus: Metabus
- genus: Metellina
- genus: Tetragnatha
- family: Theraphosidae
- family: Theridiidae
- family: Theridiosomatidae
- family: Thomisidae
- genus: Diaea
- genus: Epicadinus
- genus: Mecaphesa
- genus: Misumenoides
- genus: Misumenops
- species: Misumenops asperatus (Hentz, 1847)
- species: Misumenops bellulus (Banks, 1896)
- species: Misumenops californicus (Banks, 1896)
- species: Misumenops celer (Hentz, 1847)
- species: Misumenops conspersus (Keyserling, 1880)
- species: Misumenops importunus (Keyserling, 1881)
- species: Misumenops lenis (Keyserling, 1880)
- species: Misumenops lepidus (Thorell, 1877)
- species: Misumenops ocellatus (Tullgren, 1905)
- species: Misumenops pallens (Keyserling, 1880)
- species: Misumenops punctatus (Keyserling, 1880)
- species: Misumenops schlingeri Schick, 1965
- species: Misumenops varius (Keyserling, 1880)
- genus: Synema
- family: Titanoecidae
- family: Trechaleidae