Group: Spiders
Group Totals
Confirmed Probable TBD Total
65 187 13 265
All Taxa of Spiders

Click any row below for detailed taxon information.

Scientific name English name Class Family RDCO Status
Agelenopsis oklahomaFunnel weaver spiderArachnidaAgelenidaeTBD
Agelenopsis oregonensisFunnel weaver spiderArachnidaAgelenidaeP
Agelenopsis potteriFunnel weaver spiderArachnidaAgelenidaeC
Agelenopsis utahanaFunnel weaver spiderArachnidaAgelenidaeP
Eratigena agrestisHobo SpiderArachnidaAgelenidaeC
Eratigena duellicaGiant House SpiderArachnidaAgelenidaeC
Tegenaria domesticaBarn Funnel WeaverArachnidaAgelenidaeP
Callobius canadaTangled nest spiderArachnidaAmaurobiidaeP
Callobius enusTangled nest spiderArachnidaAmaurobiidaeP
Callobius nomeusHacklemesh weaver spiderArachnidaAmaurobiidaeP
Antrodiaetus hageniFolding-door spiderArachnidaAntrodiaetidaeC
Anyphaena pacificaSac spiderArachnidaAnyphaenidaeP
Aculepeira packardiNorthern OrbweaverArachnidaAraneidaeP
Araneus corticariusOrb weaver spiderArachnidaAraneidaeP
Araneus diadematusDiadem Spider, Cross Orb WeaverArachnidaAraneidaeC
Araneus gemmaCat-faced Spider, Gem-shaped OrbweaverArachnidaAraneidaeP
Araneus gemmoidesCat-faced Spider, Jewel SpiderArachnidaAraneidaeC
Araniella displicataSix-spotted OrbweaverArachnidaAraneidaeC
Argiope trifasciataBanded Garden SpiderArachnidaAraneidaeC
Cyclosa conicaConical Trashline OrbweaverArachnidaAraneidaeP
Hypsosinga groenlandicaOrbweaverArachnidaAraneidaeP
Hypsosinga pygmaeaSmall OrbweaverArachnidaAraneidaeP
Hypsosinga rubensRubens OrbweaverArachnidaAraneidaeP
Larinioides patagiatusOrnamental OrbweaverArachnidaAraneidaeP
Larinioides sclopetariusOrb weaver spiderArachnidaAraneidaeP
Metepeira grandiosaOrb weaver spiderArachnidaAraneidaeP
Metepeira palustrisOrb weaver spiderArachnidaAraneidaeP
Neoscona arabescaArabesque Orb weaver, Arabaesque OrbweaverArachnidaAraneidaeP
Zygiella sp.Leaf-curling orbweaverArachnidaAraneidaeP
Cheiracanthium inclusumAgrarian Sac SpiderArachnidaCheiracanthiidaeP
Cheiracanthium mildeiYellow Sac SpiderArachnidaCheiracanthiidaeC
Clubiona canadensisLeafcurling sac spiderArachnidaClubionidaeP
Clubiona mimulaLeafcurling sac spiderArachnidaClubionidaeP
Clubiona moestaLeafcurling sac spiderArachnidaClubionidaeP
Clubiona norvegicaLeafcurling sac spiderArachnidaClubionidaeP
Clubiona ripariaRiparian Sac SpiderArachnidaClubionidaeP
Clubiona trivialisLeafcurling sac spiderArachnidaClubionidaeP
Castianeira alterandaSac spiderArachnidaCorinnidaeTBD
Castianeira longipalpaLong-palped Ant-mimic Sac SpiderArachnidaCorinnidaeP
Castianeira walsinghamiSac spiderArachnidaCorinnidaeP
Cryphoeca exlineaeCybaeid spiderArachnidaCybaeidaeP
Cybaeus charlesiCybaeid spiderArachnidaCybaeidaeP
Dictyna coloradensisMesh web weaverArachnidaDictynidaeP
Dictyna majorDictynid spiderArachnidaDictynidaeP
Dictyna minutaDictynid spiderArachnidaDictynidaeC
Dictyna personataDictynid spiderArachnidaDictynidaeP
Dictyna subpinicolaDictynid spiderArachnidaDictynidaeC
Dictyna volucripesDictynid spiderArachnidaDictynidaeP
Emblyna annulipesDictynid spiderArachnidaDictynidaeC
Emblyna borealis cavernosaDictynid spiderArachnidaDictynidaeP
Emblyna chitinaDictynid spiderArachnidaDictynidaeC
Emblyna completaDictynid spiderArachnidaDictynidaeP
Emblyna hortaDictynid spiderArachnidaDictynidaeP
Emblyna phylaxDictynid spiderArachnidaDictynidaeP
Emblyna reticulataDictynid spiderArachnidaDictynidaeP
Mallos niveusDictynid spiderArachnidaDictynidaeC
Tricholathys sp.Dictynid spiderArachnidaDictynidaeTBD
Tricholathys spiralisDictynid spiderArachnidaDictynidaeP
Dysdera crocataWoodlouse SpiderArachnidaDysderidaeTBD
Callilepis eremellaGnaphosid ground spiderArachnidaGnaphosidaeP
Drassodes neglectusGnaphosid ground spiderArachnidaGnaphosidaeP
Drassodes saccatusGnaphosid ground spiderArachnidaGnaphosidaeP
Drassyllus depressusGnaphosid ground spiderArachnidaGnaphosidaeC
Drassyllus dromeusGnaphosid ground spiderArachnidaGnaphosidaeP
Drassyllus insularisGnaphosid ground spiderArachnidaGnaphosidaeP
Drassyllus lamprusGnaphosid ground spiderArachnidaGnaphosidaeP
Drassyllus nigerGnaphosid ground spiderArachnidaGnaphosidaeP
Gnaphosa californicaGnaphosid ground spiderArachnidaGnaphosidaeP
Gnaphosa muscorumGnaphosid ground spiderArachnidaGnaphosidaeP
Haplodrassus bicornisGnaphosid ground spiderArachnidaGnaphosidaeC
Haplodrassus signiferEnsign Ground HunterArachnidaGnaphosidaeP
Herpyllus hesperolusGnaphosid ground spiderArachnidaGnaphosidaeP
Micaria coloradensisGnaphosid ground spiderArachnidaGnaphosidaeP
Micaria constrictaGnaphosid ground spiderArachnidaGnaphosidaeP
Micaria foxiGnaphosid ground spiderArachnidaGnaphosidaeP
Micaria idanaGnaphosid ground spiderArachnidaGnaphosidaeP
Micaria laticepsGnaphosid ground spiderArachnidaGnaphosidaeP
Micaria longicepsGnaphosid ground spiderArachnidaGnaphosidaeP
Micaria longispinaGnaphosid ground spiderArachnidaGnaphosidaeP
Micaria pulicariaGnaphosid ground spiderArachnidaGnaphosidaeP
Micaria riggsiGnaphosid ground spiderArachnidaGnaphosidaeP
Micaria rossicaGnaphosid ground spiderArachnidaGnaphosidaeP
Nodocion eclecticusGnaphosid ground spiderArachnidaGnaphosidaeP
Nodocion rufithoracicusGnaphosid ground spiderArachnidaGnaphosidaeP
Nodocion voluntariusGnaphosid ground spiderArachnidaGnaphosidaeP
Scotophaeus blackwalliMouse spiderArachnidaGnaphosidaeP
Sergiolus columbianusGnaphosid ground spiderArachnidaGnaphosidaeTBD
Sergiolus montanusCommon Patterned Ant-Mimic Ground SpiderArachnidaGnaphosidaeC
Zelotes fratrisGnaphosid ground spiderArachnidaGnaphosidaeP
Zelotes puritanusGnaphosid ground spiderArachnidaGnaphosidaeP
Zelotes tuobusGnaphosid ground spiderArachnidaGnaphosidaeP
Cicurina idahoanaDwarf sheet spiderArachnidaHahniidaeP
Cicurina intermediaDwarf sheet spiderArachnidaHahniidaeP
Cicurina robustaDwarf sheet spiderArachnidaHahniidaeTBD
Agyneta fillmoranaSheet weaverArachnidaLinyphiidaeP
Agyneta micariaSheet weaverArachnidaLinyphiidaeP
Agyneta olivaceaSheet weaverArachnidaLinyphiidaeP
Agyneta ordinareaSheet weaverArachnidaLinyphiidaeP
Agyneta perspicuaSheet weaverArachnidaLinyphiidaeC
Agyneta protrudensSheet weaverArachnidaLinyphiidaeC
Arcuphantes sylvaticusDwarf spiderArachnidaLinyphiidaeC
Bathyphantes wanetaWaneta Shield SheetweaverArachnidaLinyphiidaeP
Centromerus longbulbusDwarf spiderArachnidaLinyphiidaeP
Ceraticelus fissicepsDwarf spiderArachnidaLinyphiidaeP
Collinsia kseniaDwarf spiderArachnidaLinyphiidaeP
Coloncus siouDwarf spiderArachnidaLinyphiidaeTBD
Coreorgonal petulcusDwarf spiderArachnidaLinyphiidaeP
Diplostyla concolorDwarf spiderArachnidaLinyphiidaeP
Erigone aletrisDwarf spiderArachnidaLinyphiidaeP
Erigone blaesaDwarf spiderArachnidaLinyphiidaeP
Erigone dentosaDwarf spiderArachnidaLinyphiidaeP
Frontinella pyramitelaBowl-and-doily SpiderArachnidaLinyphiidaeP
Glyphesis idahoanusDwarf spiderArachnidaLinyphiidaeTBD
Helophora reductaDwarf spiderArachnidaLinyphiidaeP
Helophora tunagynaDwarf spiderArachnidaLinyphiidaeP
Incestophantes washingtoniDwarf spiderArachnidaLinyphiidaeP
Lepthyphantes intricatusDwarf spiderArachnidaLinyphiidaeP
Lepthyphantes leprosusHousehold Fine SheetweaverArachnidaLinyphiidaeP
Linyphantes aeronauticusDwarf spiderArachnidaLinyphiidaeP
Mermessus trilobatusTrilobate Dwarf WeaverArachnidaLinyphiidaeC
Neriene litigiosaSierra Dome SpiderArachnidaLinyphiidaeP
Neriene radiataFilmy Dome SpiderArachnidaLinyphiidaeC
Pityohyphantes cristatusSheetweb spiderArachnidaLinyphiidaeP
Pocadicnemis pumilaSheetweb spiderArachnidaLinyphiidaeP
Scotinotylus ambiguusSheetweb spiderArachnidaLinyphiidaeC
Sougambus bostoniensisSheetweb spiderArachnidaLinyphiidaeP
Spirembolus monticolensSheetweb spiderArachnidaLinyphiidaeP
Spirembolus prominensSheetweb spiderArachnidaLinyphiidaeP
Symmigma minimumSheetweb spiderArachnidaLinyphiidaeC
Tenuiphantes tenuisSheetweb spiderArachnidaLinyphiidaeP
Tenuiphantes zebraSheetweb spiderArachnidaLinyphiidaeC
Walckenaeria tricornisSheetweb spiderArachnidaLinyphiidaeC
Wubana ornataSheetweb spiderArachnidaLinyphiidaeP
Agroeca ornataSheetweb spiderArachnidaLiocranidaeP
Agroeca pratensisLiocranid sac spiderArachnidaLiocranidaeP
Apostenus ducatiLiocranid sac spiderArachnidaLiocranidaeC
Alopecosa aculeataWolf spiderArachnidaLycosidaeP
Alopecosa kochiKoch's Wolf SpiderArachnidaLycosidaeP
Arctosa emertoniEmerton's Wolf SpiderArachnidaLycosidaeP
Arctosa littoralisShoreline Wolf SpiderArachnidaLycosidaeP
Hogna frondicolaForest Wolf SpiderArachnidaLycosidaeC
Pardosa altamontisWolf spiderArachnidaLycosidaeP
Pardosa anomalaWolf spiderArachnidaLycosidaeP
Pardosa buckleyiWolf spiderArachnidaLycosidaeP
Pardosa coloradensisWolf spiderArachnidaLycosidaeP
Pardosa fusculaWolf spiderArachnidaLycosidaeP
Pardosa groenlandicaGroenland Wolf SpiderArachnidaLycosidaeC
Pardosa lowrieiWolf spiderArachnidaLycosidaeP
Pardosa mackenzianaMackenzie's Thin-legged Wolf SpiderArachnidaLycosidaeP
Pardosa moestaWolf spiderArachnidaLycosidaeP
Pardosa ontariensisWolf spiderArachnidaLycosidaeC
Pardosa wyutaWolf spiderArachnidaLycosidaeC
Pardosa xerampelinaWolf spiderArachnidaLycosidaeP
Pirata piraticusWolf spiderArachnidaLycosidaeP
Schizocosa mccookiWolf spiderArachnidaLycosidaeP
Schizocosa minnesotensusWolf spiderArachnidaLycosidaeP
Trochosa terricolaGround Wolf SpiderArachnidaLycosidaeC
Mimetus hesperusWestern Pirate SpiderArachnidaMimetidaeC
Oxyopes scalarisWestern Lynx SpiderArachnidaOxyopidaeC
Apollophanes margaretaRunning crab spiderArachnidaPhilodromidaeC
Ebo buckleyiCrab spiderArachnidaPhilodromidaeTBD
Ebo evansaeCrab spiderArachnidaPhilodromidaeP
Philodromus californicusRunning crab spiderArachnidaPhilodromidaeP
Philodromus cespitumTurf Running SpiderArachnidaPhilodromidaeC
Philodromus disparEurasian Running Crab SpiderArachnidaPhilodromidaeC
Philodromus insperatusRunning crab spiderArachnidaPhilodromidaeP
Philodromus oneidaRunning crab spiderArachnidaPhilodromidaeP
Philodromus pernixRunning crab spiderArachnidaPhilodromidaeP
Philodromus praelustrisCrab spiderArachnidaPhilodromidaeP
Philodromus rodeckiRunning crab spiderArachnidaPhilodromidaeP
Philodromus rufus pacificusRunning crab spiderArachnidaPhilodromidaeP
Philodromus speciosusCrab spiderArachnidaPhilodromidaeP
Rhysodromus histrioAttractive Running Crab SpiderArachnidaPhilodromidaeC
Thanatus altimontisCrab spiderArachnidaPhilodromidaeTBD
Thanatus formicinusFalse crab spiderArachnidaPhilodromidaeP
Thanatus striatusCrab spiderArachnidaPhilodromidaeP
Tibellus chamberliniRunning crab spiderArachnidaPhilodromidaeP
Tibellus maritimusRunning crab spiderArachnidaPhilodromidaeP
Tibellus oblongusOblong Running SpiderArachnidaPhilodromidaeC
Pholcophora americanaAmerican Cellar SpiderArachnidaPholcidaeC
Pholcus opilionoidesCellar spiderArachnidaPholcidaeC
Pholcus phalangioidesLong-bodied Cellar SpiderArachnidaPholcidaeC
Psilochorus hesperusPholcid spiderArachnidaPholcidaeP
Phrurotimpus borealisGreater Ant-Mimic Corinne SpiderArachnidaPhrurolithidaeP
Phrurotimpus certusSpiderArachnidaPhrurolithidaeP
Scotinella pugnataSpiderArachnidaPhrurolithidaeP
Pimoa hadenPimoid spiderArachnidaPimoidaeP
Dolomedes tritonSix-spotted Fishing SpiderArachnidaPisauridaeC
Attulus ammophilusJumping spiderArachnidaSalticidaeC
Calositticus floricola palustrisFlower Jumping SpiderArachnidaSalticidaeP
Dendryphantes nigromaculatusBlack-marked Jumping SpiderArachnidaSalticidaeP
Eris militarisBronze Jumping SpiderArachnidaSalticidaeC
Evarcha proszynskiiProszynski's Jumping SpiderArachnidaSalticidaeP
Habronattus americanusJumping spiderArachnidaSalticidaeP
Habronattus decorusJumping spiderArachnidaSalticidaeP
Habronattus hirsutusHirsute Paradise SpiderArachnidaSalticidaeP
Habronattus sansoniJumping spiderArachnidaSalticidaeC
Neon pixiiJumping spiderArachnidaSalticidaeP
Neon reticulatusJumping spiderArachnidaSalticidaeP
Pelegrina aeneolaCoppered White-cheeked Jumping SpiderArachnidaSalticidaeP
Pelegrina baliaJumping spiderArachnidaSalticidaeP
Pelegrina montanaWhite-cheeked jumping spiderArachnidaSalticidaeP
Pelegrina protervaCommon White-cheeked Jumping SpiderArachnidaSalticidaeP
Pellenes lapponicusJumping spiderArachnidaSalticidaeP
Phanias concoloratusJumping spiderArachnidaSalticidaeP
Phidippus borealisJumping spiderArachnidaSalticidaeP
Phidippus johnsoniJohnson's Jumping SpiderArachnidaSalticidaeC
Phidippus purpuratusMarbled Purple Jumping SpiderArachnidaSalticidaeC
Platycryptus californicusCalifornia Flattened Jumping SpiderArachnidaSalticidaeC
Salticus scenicusZebra Jumping SpiderArachnidaSalticidaeC
Sassacus papenhoeiJumping spiderArachnidaSalticidaeP
Sassacus vitisButtonhook Leaf-beatle Jumping SpiderArachnidaSalticidaeP
Sitticus dorsatusElongated Patterned Jumping SpiderArachnidaSalticidaeP
Syngaeles leechiJumping spiderArachnidaSalticidaeTBD
Syngaeles occidentalisJumping spiderArachnidaSalticidaeTBD
Talavera minutaJumping spiderArachnidaSalticidaeP
Tutelina similisThick-spined Jumping SpiderArachnidaSalticidaeP
Usofila pacificaAmerican long-legged cave spiderArachnidaTelemidaeP
Metellina mimetoidesLong-jawed orb weaverArachnidaTetragnathidaeC
Tetragnatha laboriosaSilver Long-jawed Orb WeaverArachnidaTetragnathidaeP
Tetragnatha versicolorVersicolor Long-jawed Orb WeaverArachnidaTetragnathidaeC
Asagena americanaTwo-spotted Cobweb SpiderArachnidaTheridiidaeP
Cryptachaea canionisCobweb spiderArachnidaTheridiidaeP
Dipoena nigraCobweb spiderArachnidaTheridiidaeP
Enoplognatha intrepidaCobweb spiderArachnidaTheridiidaeP
Enoplognatha latimanaScarce Candy-striped SpiderArachnidaTheridiidaeC
Enoplognatha marmorataMarbled Cobweb SpiderArachnidaTheridiidaeP
Enoplognatha ovataCommon Candy-striped SpiderArachnidaTheridiidaeP
Enoplognatha wyutaCandy-striped spiderArachnidaTheridiidaeC
Euryopis formosaInland Triangular CobweaverArachnidaTheridiidaeP
Euryopis funebrisCobweb spiderArachnidaTheridiidaeC
Euryopis scriptipesCobweb spiderArachnidaTheridiidaeC
Latrodectus hesperusWestern Black WidowArachnidaTheridiidaeC
Neottiura bimaculataCobweb spiderArachnidaTheridiidaeP
Parasteatoda tepidariorumCommon House SpiderArachnidaTheridiidaeC
Steatoda albomaculataWhite-spotted False WidowArachnidaTheridiidaeP
Steatoda borealisBoreal CombfootArachnidaTheridiidaeP
Steatoda grossaFalse Black WidowArachnidaTheridiidaeC
Steatoda hesperaFalse widowArachnidaTheridiidaeP
Steatoda triangularisTriangulate Combfoot SpiderArachnidaTheridiidaeC
Theridion differensCobweb spiderArachnidaTheridiidaeC
Theridion leechiCobweb spiderArachnidaTheridiidaeP
Theridion neomexicanumCobweb spiderArachnidaTheridiidaeP
Theridion petraeumCobweb spiderArachnidaTheridiidaeP
Theridion rabuniCobweb spiderArachnidaTheridiidaeP
Theridula emertoniEmerson's Bitubercled CobweaverArachnidaTheridiidaeP
Thymoites camanoComb-footed spiderArachnidaTheridiidaeC
Bassaniana utahensisUtah Crab SpiderArachnidaThomisidaeC
Coriarachne brunneipesBrown-legged Crab SpiderArachnidaThomisidaeP
Mecaphesa asperataNorthern Crab SpiderArachnidaThomisidaeC
Mecaphesa celerSwift Crab SpiderArachnidaThomisidaeP
Misumena vatiaGoldenrod Crab SpiderArachnidaThomisidaeP
Xysticus benefactorGround crab spiderArachnidaThomisidaeP
Xysticus cunctatorGround crab spiderArachnidaThomisidaeP
Xysticus discurscansGround crab spiderArachnidaThomisidaeP
Xysticus emertoniGround crab spiderArachnidaThomisidaeP
Xysticus gulosusGround crab spiderArachnidaThomisidaeP
Xysticus locuplesGround crab spiderArachnidaThomisidaeP
Xysticus luctuosusGround crab spiderArachnidaThomisidaeP
Xysticus montanensisMontane Crab SpiderArachnidaThomisidaeP
Titanoeca nigrellaTitanoecid spiderArachnidaTitanoecidaeP
Titanoeca nivalisTitanoecid spiderArachnidaTitanoecidaeP
Meriola deceptaTrachelid spiderArachnidaTrachelidaeTBD
Hyptiotes gertschiGertsch's TriangleweaverArachnidaUloboridaeC
Hyptiotes glomosusUloborid spiderArachnidaUloboridaeP
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