Bugs in the West

States: Colorado, Wyoming, Montana, Idaho, Utah, Nevada, California.

House and yard pests

Western Honey BeeApis melliferaCan stingWestern Encephalitis MosquitoCulex tarsalisCan spread germs or diseaseConvergent Lady BeetleHippodamia convergensCan biteSeven-spotted Lady BeetleCoccinella septempunctataCommon Pill WoodlouseArmadillidium vulgareHarmlessAsian Lady BeetleHarmonia axyridisCan biteHouse Mosquito ComplexCulex pipiensCan spread germs or diseaseBold Jumping SpiderPhidippus audaxCan biteBark Lice, Book Lice, and Parasitic LicePsocopteraCan damage your homeSouthern House MosquitoCulex quinquefasciatusCan spread germs or diseaseInland Floodwater MosquitoAedes vexansCan spread germs or diseaseWestern Black WidowLatrodectus hesperusVenomousArgentine AntLinepithema humileNuisance, not dangerousEuropean Paper WaspPolistes dominulaCan stingThripsThysanopteraCan biteWestern YellowjacketVespula pensylvanicaCan stingWinter Marsh MosquitoCuliseta inornataCan biteSpotted Cucumber BeetleDiabrotica undecimpunctataDamages trees, gardens or cropsBrown WidowLatrodectus geometricusCan biteHarlequin BugMurgantia histrionicaDamages trees, gardens or cropsAmerican Winter AntPrenolepis imparisWoodlouse SpiderDysdera crocataCan biteFalse Black WidowSteatoda grossaCan biteWestern Conifer Seed BugLeptoglossus occidentalisDamages trees, gardens or crops

Most reported bugs

Tripartite Sweat BeeHalictus tripartitusMonarchDanaus plexippusYellow-faced Bumble BeeBombus vosnesenskiiTwo-form Bumble Bee ComplexBombus bifariusPainted LadyVanessa carduiWhite-lined SphinxHyles lineataDamages trees, gardens or cropsSmall WhitePieris rapaeFiery SkipperHylephila phyleusDamages trees, gardens or cropsArizona MantisStagmomantis limbataBlack-tailed Bumble BeeBombus melanopygusVivid DancerArgia vividaMourning CloakNymphalis antiopaDamages trees, gardens or cropsHunt's Bumble BeeBombus huntiiWestern Tiger SwallowtailPapilio rutulusVariable CheckerspotEuphydryas chalcedonaVariegated MeadowhawkSympetrum corruptumAnise SwallowtailPapilio zelicaonLigated Furrow BeeHalictus ligatusGray HairstreakStrymon melinusGulf FritillaryDione vanillaeGray Bird GrasshopperSchistocerca nitensDamages trees, gardens or cropsMargined CalligrapherToxomerus marginatusUmber SkipperLon melaneNoble False WidowSteatoda nobilisCan biteAngeles Striped Sweat BeeAgapostemon angelicusCan stingAcmon BlueIcaricia acmonFlame SkimmerLibellula saturataUrbane Digger BeeAnthophora urbanaBredow's SisterAdelpha bredowiiCalifornia TortoiseshellNymphalis californicaEuropean MantisMantis religiosaCalifornia Gall WaspAndricus quercuscalifornicusPipevine SwallowtailBattus philenorCalifornia SisterAdelpha californicaWestern Bumble BeeBombus occidentalisOrange SulphurColias eurythemeDamages trees, gardens or crops