This is a list of fauna observed in the U.S. state of Utah.
Invertebrates Arachnids
American grass spider (Agelenopsis spp.) American yellow sac spider (Cheiracanthium inclusum) Ant spider (Micaria pasadena) Ant spider (Micaria rossica) Antmimic spider (Meriola decepta ) Arizona bark scorpion (Centruroides exilicauda) Banded orb weaving spider (Argiope trifasciata) Bindweed gall mite (Aceria malherbae) Black hairy scorpion (Hadrurus spadix) Bold jumping spider (Phidippus audax) Camel spider (Eremobates spp.) Carolina wolf spider (Hogna carolinensis) Cat-faced spider (Araneus gemmoides) Cellar spiders (Pholcus phalangioides) - also called "daddy long-legs" Clover mite (Bryobia praetiosa) Crab spider (Bassaniana utahensis) Crab spider (Ebo pepinensis) Crab spider (Mecaphesa spp.) Crab spider (Xysticus discursans) Crab spider (Xysticus emertoni) Crab spider (Xysticus pellax ) Eastern parson spider (Herpyllus ecclesiasticus) False black widow (Steatoda grossa) Flattened crab spider (Philodromus histrio) Flattened crab spider (Philodromus imbecillus) Flattened crab spider (Philodromus spectabilis) Giant desert hairy scorpion (Hadrurus arizonensis) Ground spider (Cesonia gertschi) Ground spider (Drassodes spp.) Ground spider (Drassyllus lepidus) Ground spider (Gnaphosa sericata) Ground spider (Herpyllus cockerelli) Hobo spider (Tegenaria agrestis) Huntsman spider (Olios giganteus) Jumping spider (Habronattus conjunctus) Jumping spider (Habronattus signatus) Jumping spider (Habronattus tarsalis) Jumping spider (Platycryptus arizonensis) Jumping spider (Salticus peckhamae) Northern scorpion (Paruroctonus boreus) Pseudoscorpion (various) Red spider mite (Tetranychus urticae) - also called "two-spotted spider mite" Rocky Mountain wood tick (Dermacentor andersoni) Sac spider (Phrurotimpus borealis) Salt Lake County brown tarantula (Aphonopelma iodius) Slender crab spider (Tibellus chamberlini) Slender crab spider (Tibellus duttoni) Soft-bodied tick (Ornithodoros spp.) - suspected due to confirmation in all surrounding states, not confirmed in Utah Spinose ear tick (Otobius megnini) Spruce spider mite (Oligonychus ununguis) Striped lynx spider (Oxyopes scalaris) Tomato russet mite (Aculops lycopersici) Utah crevice weaver (Kukulcania utahana) Western black widow spider (Latrodectus hesperus) White-banded crab spider (Misumenoides formosipes) Wolf spider (Hogna spp.) Woodlouse spider (Dysdera crocata)
Crustaceans
Brine shrimp (Artemia franciscana) Louisiana crayfish (Procambarus clarkii) - not native and considered invasive Northern crayfish (Orconectes virilis) - not native and considered invasive Pill bug (Armadillidium vulgare) - sometimes called "sow bugs" Pilose crayfish (Pacifastacus gambelii) Signal crayfish (Pacifastacus leniusculus) - confirmed in Utah County Snake River Pilose crayfish (Pacifastacus leniusculus) - likely but not confirmed as of 2009 Water flea (Daphnia lumholtzi) - not native and considered invasive
Insects
Alkali fly (Ephydra hians) American serpentine leafminer (Liriomyza trifolii) Bank's grass mite (Oligonychus pratensis) Beet leafhopper (Circulifer tenellus) Brine fly (Ephydra cinerea Jones) Brown marmorated stink bug (Halyomorpha halys) - considered invasive Cabbage aphid (Brevicoryne brassicae) Cabbage maggot (Delia radicum) Colorado potato beetle (Leptinotarsa decemlineata) Columbia Basin wireworm (Limonius subauratus) Common earwig (Forficula auricularia) - also called European earwig Coral Pink Sand Dunes tiger beetle (Cicindela albissima) Corn leaf aphid (Rhopalosiphum maidis) Corn sap beetle (Carpophilus dimidiatus) Differential grasshopper (Melanoplus differentialis) Dusky sap beetle (Carpophilus lugubris) Four-spotted sap beetle (Glischrochilus quadrisignatus) - also called picnic beetle Great Basin wireworm (Ctenicera pruinina) Green lacewing (Chrysopa) Green peach aphid (Myzus persicae) Green stink bug (Chinavia hilaris) Ichneumon wasp (Megarhyssa spp.) Jerusalem cricket (Stenopelmatus spp.) Melon aphid (Aphis gossypii) Migratory grasshopper (Melanoplus sanguinipes) Mormon cricket (Anabrus simplex) Northern corn rootworm (Diabrotica barberi) Onion fly (Delia antiqua) Onion thrips (Thrips tabaci) Pacific coast wireworm (Limonius canus) Potato aphid (Macrosiphum euphorbiae) Potato psyllid (Bactericera cockerelli) Red-legged grasshopper (Melanoplus femurrubrum) Seedcorn maggot (Delia platura) Spotted cucumber beetle (Diabrotica undecimpunctata) Striped cucumber beetle (Acalymma trivittatum) Thrips (various) Sugar beet wireworm (Limonius californicus) Two-striped grasshopper (Melanoplus bivittatus) Vegetable leafminer (Liriomyza sativae) Velvet ant (Mutillidae spp.) - these are actually a type of wasp Water boatmen (Corixidae) Western corn rootworm (Diabrotica virgifera) Western field wireworm (Limonius infuscatus) Western honey bee (Apis mellifera)
Butterflies and moths
Achemon sphinx moth (Eumorpha achemon) American painted lady butterfly (Vanessa virginiensis) American snout butterfly (Libytheana carinenta) Anise swallowtail butterfly (Papilio zelicaon) Aphrodite fritillary butterfly (Speyeria aphrodite) Arctic fritillary butterfly (Boloria chariclea) Army cutworm (Euxoa auxiliaris) Black cutworm (Agrotis ipsilon) Black swallowtail butterfly (Papilio polyxenes) Bordered patch butterfly (Chlosyne lacinia) Cabbage looper (Trichoplusia ni) California patch butterfly (Chlosyne californica) California sister butterfly (Adelpha californica) California tortoiseshell butterfly (Nymphalis californica) Callippe fritillary butterfly (Speyeria callippe) Clodius parnassian butterfly (Parnassius clodius) Common buckeye butterfly (Junonia coenia) Compton tortoiseshell butterfly (Nymphalis vaualbum) Corn earworm (Helicoverpa zea) - also called the tomato fruitworm Coronis fritillary butterfly (Speyeria coronis) Diamondback moth (Plutella xylostella) Dotted checkerspot butterfly (Poladryas minuta) Edith's checkerspot butterfly (Euphydryas editha) Edward's fritillary butterfly (Speyeria edwardsii) Empress Leilia butterfly (Asterocampa leilia) Fall armyworm (Spodoptera frugiperda) Field crescent butterfly (Phyciodes pulchella) Five-spotted hawkmoth (Manduca quinquemaculata) Freija fritillary butterfly (Boloria freija) Glassy cutworm (Crymodes devastator) Gorgone checkerspot butterfly (Chlosyne gorgone) Gray comma butterfly (Polygonia progne) Great Basin fritillary butterfly (Speyeria egleis) Great spangled fritillary butterfly (Speyeria cybele) Green comma butterfly (Polygonia faunus) Gulf fritillary butterfly (Agraulis vanillae) Hackberry emperor butterfly (Asterocampa celtis) Hoary comma butterfly (Polygonia gracilis) Hydaspe fritillary butterfly (Speyeria hydaspe) Indra swallowtail butterfly (Papilio indra) Leanira checkerspot butterfly (Chlosyne leanira) Lorquin's admiral butterfly (Limenitis lorquini) Milbert's tortoiseshell butterfly (Aglais milberti) Monarch butterfly (Danaus plexippus) Mormon fritillary butterfly (Speyeria mormonia) Mourning cloak butterfly (Nymphalis antiopa) Mylitta crescent butterfly (Phyciodes mylitta) Nokomis fritillary butterfly (Speyeria nokomis) Northern checkerspot butterfly (Chlosyne palla) Northern crescent butterfly (Phyciodes cocyta) Northwestern fritillary butterfly (Speyeria hesperis) Old World swallowtail butterfly (Papilio machaon) Painted lady butterfly (Vanessa cardui) Pale crescent butterfly (Phyciodes pallida) Pale swallowtail butterfly (Papilio eurymedon) Pallid crescentspot butterfly (Phyciodes picta) Pearl crescent butterfly (Phyciodes tharos) Pipevine swallowtail butterfly (Battus philenor) Queen butterfly (Danaus gilippus) Red admiral butterfly (Vanessa atalanta) Red-spotted purple butterfly (Limenitis arthemis astyanax) Relict fritillary butterfly (Boloria kriemhild) Rockslide checkerspot butterfly (Chlosyne whitneyi) Rocky Mountain parnassian butterfly (Parnassius smintheus) Silver-bordered fritillary butterfly (Boloria selene) Small white butterfly (Pieris rapae) Soldier butterfly (Danaus eresimus) Tropical buckeye butterfly (Junonia genoveva) Two-tailed swallowtail butterfly (Papilio multicaudata) Variable checkerspot butterfly (Euphydryas chalcedona) Variegated cutworm (Peridroma saucia) Variegated fritillary butterfly (Euptoieta claudia) Viceroy butterfly (Limenitis archippus) Weidemeyer's admiral butterfly (Limenitis weidemeyerii) West Coast lady butterfly (Vanessa annabella) Western bean cutworm (Striacosta albicosta) Western tiger swallowtail butterfly (Papilio rutulus) White admiral butterfly (Limenitis arthemis) White peacock butterfly (Anartia jatrophae) White-lined sphinx moth (Hyles lineata) Zerene fritillary butterfly (Speyeria zerene)
Mollusks
Black gloss (Zonitoides nitidus) California floater (Anodonta californiensis) Desert springsnail (Pyrgulopsis deserta) Fat-whorled pondsnail (Stagnicola bonnevillensis) Fish Lake physa (Physella microstriata) Glass physa (Physa skinneri) Kanab ambersnail (Oxyloma kanabense) Land snail (Nesovitrea electrina) Minute gem (Hawaiia minuscula minuscula) New Zealand mud snail (Potamopyrgus antipodarum) - not native and considered invasive Ovate vertigo (Vertigo ovata) Quagga mussel (Dreissena bugensis) - considered an invasive species, found in Lake Powell and suspected of being in Deer Creek Reservoir Red-rimmed melania (Melanoides tuberculata) - not native and considered invasive Southern tightcoil (Ogaridiscus subrupicola) Striate gem (Hawaiia minuscula neomexicana) Thickshell pondsnail (Stagnicola utahensis) Thin-lip vallonia (Vallonia perspectiva) Utah physa (Physella utahensis) Utah roundmouth snail (Valvata utahensis) Variable vertigo (Vertigo gouldii) Western pearlshell (Margaritifera falcata) Wet rock physa (Physella zionis) Widespread column (or Moss chrysalis snail) (Pupilla muscorum) Winged floater (Anodonta nuttalliana)
Other
House centipede (Scutigera coleoptrata)
Vertebrates Amphibians
American bullfrog (Rana catesbeiana) - not a native species Arizona toad (Bufo microscaphus) Canyon tree frog (Hyla arenicolor) Columbia spotted frog (Rana luteiventris) - on the Utah Sensitive Species List as a "conservation agreement species" Great Basin spadefoot (Spea intermontana) Great Plains toad (Bufo cognatus) Green frog (Rana clamitans) - not a native species New Mexico spadefoot toad (Spea multiplicata) Northern leopard frog (Rana pipiens) Pacific tree frog (Pseudacris regilla) Plains spadefoot toad (Spea bombifrons) Red-spotted toad (Bufo punctatus) Relict leopard frog (Rana onca) - endangered, possibly extirpated from Utah Tiger salamander (Ambystoma tigrinum) - the only native salamander species in Utah Western chorus frog (Pseudacris triseriata) Western toad (Bufo boreas) Woodhouse's toad (Bufo woodhousii)
Birds
Acorn woodpecker (Melanerpes formicivorus) Abert's towhee (Pipilo aberti) American avocet (Recurvirostra americana) American bittern (Botaurus lentiginosus) American cliff swallow (Petrochelidon pyrrhonota) American coot (Fulica americana) American crow (Corvus brachyrhynchos) American dipper (Cinclus mexicanus) American golden plover (Pluvialis dominica) American goldfinch (Carduelis tristis) American kestral (Falco sparverius) American pipit (Anthus rubescens) - also known as the buff-bellied pipit American redstart (Setophaga ruticilla) American robin (Turdus migratorius) American three-toed woodpecker (Picoides dorsalis) American tree sparrow (Spizella arborea) American white pelican (Pelecanus erythrorhynchos) American wigeon (Anas americana) Ash-throated flycatcher (Myiarchus cinerascens) Baird's sandpiper (Calidris bairdii) Bald eagle (Haliaeetus leucocephalus) Band-tailed pigeon (Patagioenas fasciata) Bank swallow (Riparia riparia) - also called sand martin Barn owl (Tyto alba) Barn swallow (Hirundo rustica) Barrow's goldeneye (Bucephala islandica) Bell's vireo (Vireo bellii) Belted kingfisher (Ceryle alcyon) Bendire's thrasher (Toxostoma bendirei) Bewick's wren (Thyromanes bewickii) Black phoebe (Sayornis nigricans)