Invertebrates
Arachnids
- American grass spider (Agelenopsis spp.) [1]
- American yellow sac spider (Cheiracanthium inclusum) [1]
- Ant spider (Micaria pasadena) [2]
- Ant spider (Micaria rossica) [2]
- Antmimic spider (Meriola decepta ) [2]
- Arizona bark scorpion (Centruroides exilicauda) [3]
- Banded orb weaving spider (Argiope trifasciata) [1]
- Bindweed gall mite (Aceria malherbae) [1]
- Black hairy scorpion (Hadrurus spadix) [3]
- Bold jumping spider (Phidippus audax) [1]
- Camel spider (Eremobates spp.) [1]
- Carolina wolf spider (Hogna carolinensis) [4]
- Cat-faced spider (Araneus gemmoides) [1]
- Cellar spiders (Pholcus phalangioides) - also called "daddy long-legs" [1]
- Clover mite (Bryobia praetiosa) [1]
- Crab spider (Bassaniana utahensis) [1]
- Crab spider (Ebo pepinensis) [2]
- Crab spider (Mecaphesa spp.) [1]
- Crab spider (Xysticus discursans) [2]
- Crab spider (Xysticus emertoni) [2]
- Crab spider (Xysticus pellax ) [2]
- Eastern parson spider (Herpyllus ecclesiasticus) [2]
- False black widow (Steatoda grossa) [1]
- Flattened crab spider (Philodromus histrio) [2]
- Flattened crab spider (Philodromus imbecillus) [2]
- Flattened crab spider (Philodromus spectabilis) [2]
- Giant desert hairy scorpion (Hadrurus arizonensis) [3]
- Ground spider (Cesonia gertschi) [2]
- Ground spider (Drassodes spp.) [1]
- Ground spider (Drassyllus lepidus) [2]
- Ground spider (Gnaphosa sericata) [2]
- Ground spider (Herpyllus cockerelli) [2]
- Hobo spider (Tegenaria agrestis) [1]
- Huntsman spider (Olios giganteus) [2]
- Jumping spider (Habronattus conjunctus) [2]
- Jumping spider (Habronattus signatus) [2]
- Jumping spider (Habronattus tarsalis) [2]
- Jumping spider (Platycryptus arizonensis) [2]
- Jumping spider (Salticus peckhamae) [2]
- Northern scorpion (Paruroctonus boreus) [3]
- Pseudoscorpion (various) [1]
- Red spider mite (Tetranychus urticae) - also called "two-spotted spider mite" [5]
- Rocky Mountain wood tick (Dermacentor andersoni) [1]
- Sac spider (Phrurotimpus borealis) [2]
- Salt Lake County brown tarantula (Aphonopelma iodius) [4]
- Slender crab spider (Tibellus chamberlini) [2]
- Slender crab spider (Tibellus duttoni) [2]
- Soft-bodied tick (Ornithodoros spp.) - suspected due to confirmation in all surrounding states, not confirmed in Utah [1]
- Spinose ear tick (Otobius megnini) [1]
- Spruce spider mite (Oligonychus ununguis) [1]
- Striped lynx spider (Oxyopes scalaris) [1]
- Tomato russet mite (Aculops lycopersici) [1]
- Utah crevice weaver (Kukulcania utahana) [1]
- Western black widow spider (Latrodectus hesperus) [4]
- White-banded crab spider (Misumenoides formosipes) [1]
- Wolf spider (Hogna spp.) [1]
- Woodlouse spider (Dysdera crocata) [4]
Crustaceans
- Brine shrimp (Artemia franciscana) [6]
- Louisiana crayfish (Procambarus clarkii) - not native and considered invasive [7]
- Northern crayfish (Orconectes virilis) - not native and considered invasive [7]
- Pill bug (Armadillidium vulgare) - sometimes called "sow bugs" [8]
- Pilose crayfish (Pacifastacus gambelii) [7]
- Signal crayfish (Pacifastacus leniusculus) - confirmed in Utah County [7]
- Snake River Pilose crayfish (Pacifastacus leniusculus) - likely but not confirmed as of 2009 [7]
- Water flea (Daphnia lumholtzi) - not native and considered invasive [9]
Insects
- Alkali fly (Ephydra hians) [10]
- American serpentine leafminer (Liriomyza trifolii) [11]
- Bank's grass mite (Oligonychus pratensis) [12]
- Beet leafhopper (Circulifer tenellus) [13]
- Brine fly (Ephydra cinerea Jones) [14]
- Brown marmorated stink bug (Halyomorpha halys) - considered invasive [15]
- Cabbage aphid (Brevicoryne brassicae) [16]
- Cabbage maggot (Delia radicum) [17]
- Colorado potato beetle (Leptinotarsa decemlineata) [18]
- Columbia Basin wireworm (Limonius subauratus) [19]
- Common earwig (Forficula auricularia) - also called European earwig [20]
- Coral Pink Sand Dunes tiger beetle (Cicindela albissima) [21]
- Corn leaf aphid (Rhopalosiphum maidis) [22]
- Corn sap beetle (Carpophilus dimidiatus) [23]
- Differential grasshopper (Melanoplus differentialis) [24]
- Dusky sap beetle (Carpophilus lugubris) [23]
- Four-spotted sap beetle (Glischrochilus quadrisignatus) - also called picnic beetle [23]
- Great Basin wireworm (Ctenicera pruinina) [19]
- Green lacewing (Chrysopa) [4]
- Green peach aphid (Myzus persicae) [25]
- Green stink bug (Chinavia hilaris) [15]
- Ichneumon wasp (Megarhyssa spp.) [4]
- Jerusalem cricket (Stenopelmatus spp.) [4]
- Melon aphid (Aphis gossypii) [25]
- Migratory grasshopper (Melanoplus sanguinipes) [24]
- Mormon cricket (Anabrus simplex) [4]
- Northern corn rootworm (Diabrotica barberi) [26]
- Onion fly (Delia antiqua) [27]
- Onion thrips (Thrips tabaci) [28]
- Pacific coast wireworm (Limonius canus) [19]
- Potato aphid (Macrosiphum euphorbiae) [25]
- Potato psyllid (Bactericera cockerelli) [29]
- Red-legged grasshopper (Melanoplus femurrubrum) [24]
- Seedcorn maggot (Delia platura) [27] [30]
- Spotted cucumber beetle (Diabrotica undecimpunctata) [31]
- Striped cucumber beetle (Acalymma trivittatum) [31]
- Thrips (various) [32]
- Sugar beet wireworm (Limonius californicus) [19]
- Two-striped grasshopper (Melanoplus bivittatus) [24]
- Vegetable leafminer (Liriomyza sativae) [11]
- Velvet ant (Mutillidae spp.) - these are actually a type of wasp [4]
- Water boatmen (Corixidae) [10]
- Western corn rootworm (Diabrotica virgifera) [26]
- Western field wireworm (Limonius infuscatus) [19]
- Western honey bee (Apis mellifera) [4]
Butterflies and moths
- Achemon sphinx moth (Eumorpha achemon) [33]
- American painted lady butterfly (Vanessa virginiensis) [34]
- American snout butterfly (Libytheana carinenta) [34]
- Anise swallowtail butterfly (Papilio zelicaon) [34]
- Aphrodite fritillary butterfly (Speyeria aphrodite) [34]
- Arctic fritillary butterfly (Boloria chariclea) [34]
- Army cutworm (Euxoa auxiliaris) [35]
- Black cutworm (Agrotis ipsilon) [35]
- Black swallowtail butterfly (Papilio polyxenes) [34]
- Bordered patch butterfly (Chlosyne lacinia) [34]
- Cabbage looper (Trichoplusia ni) [36]
- California patch butterfly (Chlosyne californica) [34]
- California sister butterfly (Adelpha californica) [34]
- California tortoiseshell butterfly (Nymphalis californica) [34]
- Callippe fritillary butterfly (Speyeria callippe) [34]
- Clodius parnassian butterfly (Parnassius clodius) [34]
- Common buckeye butterfly (Junonia coenia) [34]
- Compton tortoiseshell butterfly (Nymphalis vaualbum) [34]
- Corn earworm (Helicoverpa zea) - also called the tomato fruitworm [37]
- Coronis fritillary butterfly (Speyeria coronis) [34]
- Diamondback moth (Plutella xylostella) [38]
- Dotted checkerspot butterfly (Poladryas minuta) [34]
- Edith's checkerspot butterfly (Euphydryas editha) [34]
- Edward's fritillary butterfly (Speyeria edwardsii) [34]
- Empress Leilia butterfly (Asterocampa leilia) [34]
- Fall armyworm (Spodoptera frugiperda) [39]
- Field crescent butterfly (Phyciodes pulchella) [34]
- Five-spotted hawkmoth (Manduca quinquemaculata) [40]
- Freija fritillary butterfly (Boloria freija) [34]
- Glassy cutworm (Crymodes devastator) [35]
- Gorgone checkerspot butterfly (Chlosyne gorgone) [34]
- Gray comma butterfly (Polygonia progne) [34]
- Great Basin fritillary butterfly (Speyeria egleis) [34]
- Great spangled fritillary butterfly (Speyeria cybele) [34]
- Green comma butterfly (Polygonia faunus) [34]
- Gulf fritillary butterfly (Agraulis vanillae) [34]
- Hackberry emperor butterfly (Asterocampa celtis) [34]
- Hoary comma butterfly (Polygonia gracilis) [34]
- Hydaspe fritillary butterfly (Speyeria hydaspe) [34]
- Indra swallowtail butterfly (Papilio indra) [34]
- Leanira checkerspot butterfly (Chlosyne leanira) [34]
- Lorquin's admiral butterfly (Limenitis lorquini) [34]
- Milbert's tortoiseshell butterfly (Aglais milberti) [34]
- Monarch butterfly (Danaus plexippus) [34]
- Mormon fritillary butterfly (Speyeria mormonia) [34]
- Mourning cloak butterfly (Nymphalis antiopa) [34]
- Mylitta crescent butterfly (Phyciodes mylitta) [34]
- Nokomis fritillary butterfly (Speyeria nokomis) [34]
- Northern checkerspot butterfly (Chlosyne palla) [34]
- Northern crescent butterfly (Phyciodes cocyta) [34]
- Northwestern fritillary butterfly (Speyeria hesperis) [34]
- Old World swallowtail butterfly (Papilio machaon) [34]
- Painted lady butterfly (Vanessa cardui) [34]
- Pale crescent butterfly (Phyciodes pallida) [34]
- Pale swallowtail butterfly (Papilio eurymedon) [34]
- Pallid crescentspot butterfly (Phyciodes picta) [34]
- Pearl crescent butterfly (Phyciodes tharos) [34]
- Pipevine swallowtail butterfly (Battus philenor) [34]
- Queen butterfly (Danaus gilippus) [34]
- Red admiral butterfly (Vanessa atalanta) [34]
- Red-spotted purple butterfly (Limenitis arthemis astyanax) [34]
- Relict fritillary butterfly (Boloria kriemhild) [34]
- Rockslide checkerspot butterfly (Chlosyne whitneyi) [34]
- Rocky Mountain parnassian butterfly (Parnassius smintheus) [34]
- Silver-bordered fritillary butterfly (Boloria selene) [34]
- Small white butterfly (Pieris rapae) [41]
- Soldier butterfly (Danaus eresimus) [34]
- Tropical buckeye butterfly (Junonia genoveva) [34]
- Two-tailed swallowtail butterfly (Papilio multicaudata) [34]
- Variable checkerspot butterfly (Euphydryas chalcedona) [34]
- Variegated cutworm (Peridroma saucia) [35]
- Variegated fritillary butterfly (Euptoieta claudia) [34]
- Viceroy butterfly (Limenitis archippus) [34]
- Weidemeyer's admiral butterfly (Limenitis weidemeyerii) [34]
- West Coast lady butterfly (Vanessa annabella) [34]
- Western bean cutworm (Striacosta albicosta) [42]
- Western tiger swallowtail butterfly (Papilio rutulus) [34]
- White admiral butterfly (Limenitis arthemis) [34]
- White peacock butterfly (Anartia jatrophae) [34]
- White-lined sphinx moth (Hyles lineata) [4]
- Zerene fritillary butterfly (Speyeria zerene) [34]
Mollusks
- Black gloss (Zonitoides nitidus) [43]
- California floater (Anodonta californiensis) [44]
- Desert springsnail (Pyrgulopsis deserta) [45]
- Fat-whorled pondsnail (Stagnicola bonnevillensis) [46]
- Fish Lake physa (Physella microstriata) [47]
- Glass physa (Physa skinneri) [48]
- Kanab ambersnail (Oxyloma kanabense) [49]
- Land snail (Nesovitrea electrina) [50]
- Minute gem (Hawaiia minuscula minuscula) [51]
- New Zealand mud snail (Potamopyrgus antipodarum) - not native and considered invasive [7]
- Ovate vertigo (Vertigo ovata) [52]
- Quagga mussel (Dreissena bugensis) - considered an invasive species, found in Lake Powell and suspected of being in Deer Creek Reservoir [53]
- Red-rimmed melania (Melanoides tuberculata) - not native and considered invasive [7]
- Southern tightcoil (Ogaridiscus subrupicola) [54]
- Striate gem (Hawaiia minuscula neomexicana) [55]
- Thickshell pondsnail (Stagnicola utahensis) [56]
- Thin-lip vallonia (Vallonia perspectiva) [57]
- Utah physa (Physella utahensis) [58]
- Utah roundmouth snail (Valvata utahensis) [59]
- Variable vertigo (Vertigo gouldii) [60]
- Western pearlshell (Margaritifera falcata) [61]
- Wet rock physa (Physella zionis) [62]
- Widespread column (or Moss chrysalis snail) (Pupilla muscorum) [63]
- Winged floater (Anodonta nuttalliana) [64]
Other
- House centipede (Scutigera coleoptrata) [4]
