List of arachnids of Utah

This is a list of arachnids observed in the U.S. state of Utah. There are more than 600 species of arachnid in Utah.

Mites



 * Bindweed gall mite (Aceria malherbae)
 * Clover mite (Bryobia praetiosa)
 * Pearleaf blister mite (Eriophyes pyri)
 * Poplar budgall mite (Eriophyes parapopuli)
 * Pseudoscorpion (various)
 * Red spider mite (Tetranychus urticae) - also called "two-spotted spider mite"
 * Red velvet mite (thousands of species)
 * Spruce spider mite (Oligonychus ununguis)
 * Tomato russet mite (Aculops lycopersici)
 * Western predatory mite (Galendromus occidentalis)

Scorpions



 * Arizona bark scorpion (Centruroides exilicauda)
 * Beck desert scorpion (Paruroctonus becki)
 * Black hairy scorpion (Hadrurus spadix)
 * Eastern sand scorpion (Paruroctonus utahensis)
 * Giant desert hairy scorpion (Hadrurus arizonensis)
 * Northern scorpion (Paruroctonus boreus)
 * Sawfinger scorpion (Serradigitus wupatkiensis)
 * Wood scorpion (Anuroctonus phaiodactylus)
 * Yellow ground scorpion (Vaejovis confusus)

Spiders



 * American grass spider (Agelenopsis spp.)
 * American yellow sac spider (Cheiracanthium inclusum)
 * Ant spider (Micaria pasadena)
 * Ant spider (Micaria rossica)
 * Antmimic spider (Meriola decepta )
 * Banded orb weaving spider (Argiope trifasciata)
 * Bold jumping spider (Phidippus audax)
 * Bull-headed sac spider (Trachelas mexicanus)
 * Camel spider (Ammotrechula spp.)
 * Camel spider (Eremobates spp.)
 * Carolina wolf spider (Hogna carolinensis)
 * Cat-faced spider (Araneus gemmoides)
 * Cellar spiders (Pholcus phalangioides) - also called "daddy long-legs"
 * Crab spider (Bassaniana utahensis)
 * Crab spider (Ebo merkeli)
 * Crab spider (Ebo pepinensis)
 * Crab spider (Mecaphesa spp.)
 * Crab spider (Xysticus discursans)
 * Crab spider (Xysticus emertoni)
 * Crab spider (Xysticus facetus)
 * Crab spider (Xysticus paiutus)
 * Crab spider (Xysticus pellax )
 * Eastern parson spider (Herpyllus ecclesiasticus)
 * False black widow (Steatoda grossa)
 * Flat-bellied ground spider (Callilepis mumai)
 * Flattened crab spider (Philodromus histrio)
 * Flattened crab spider (Philodromus imbecillus)
 * Flattened crab spider (Philodromus satullus)
 * Flattened crab spider (Philodromus spectabilis)
 * Ground spider (Cesonia gertschi)
 * Ground spider (Drassodes spp.)
 * Ground spider (Drassyllus inanus)
 * Ground spider (Drassyllus lepidus)
 * Ground spider (Drassyllus mexicanus)
 * Ground spider (Drassyllus nannellus)
 * Ground spider (Gnaphosa californica)
 * Ground spider (Gnaphosa clara)
 * Ground spider (Gnaphosa dentata)
 * Ground spider (Gnaphosa salsa)
 * Ground spider (Gnaphosa saxosa)
 * Ground spider (Gnaphosa sericata)
 * Ground spider (Gnaphosa synthetica)
 * Ground spider (Herpyllus cockerelli)
 * Ground spider (Herpyllus convallis)
 * Ground spider (Micaria nanella)
 * Ground spider (Sergiolus lowelli)
 * Hobo spider (Tegenaria agrestis)
 * Huntsman spider (Olios fasciculatus)
 * Huntsman spider (Olios giganteus)
 * Jumping spider (Habronattus conjunctus)
 * Jumping spider (Habronattus signatus)
 * Jumping spider (Habronattus tarsalis)
 * Jumping spider (Pelegrina verecunda)
 * Jumping spider (Platycryptus arizonensis)
 * Jumping spider (Salticus peckhamae)
 * Jumping spider (Terralonus unicus)
 * Mormon ant spider (Micaria mormon)
 * Mormon ground spider (Drassyllus mormon)
 * Running crab spider (Titanebo dondalei)
 * Running crab spider (Titanebo magnificus)
 * Sac spider (Castianeira nanella)
 * Sac spider (Drassinella unicolor)
 * Sac spider (Phrurotimpus borealis)
 * Sac spider (Phrurotimpus nr. woodburyi)
 * Salt Lake County brown tarantula (Aphonopelma iodius)
 * Slender crab spider (Tibellus chamberlini)
 * Slender crab spider (Tibellus duttoni)
 * Striped lynx spider (Oxyopes scalaris)
 * Texas running crab spider (Titanebo texanus)
 * Utah crevice weaver (Kukulcania utahana)
 * Utah ground spider (Gnaphosa utahana)
 * Western black widow spider (Latrodectus hesperus)
 * White-banded crab spider (Misumenoides formosipes)
 * Wolf spider (Hogna spp.)
 * Woodlouse spider (Dysdera crocata)

Other

 * Opiliones (harvestman, "daddy long-legs")
 * Rocky Mountain wood tick (Dermacentor andersoni)
 * Soft-bodied tick (Ornithodoros spp.)
 * Spinose ear tick (Otobius megnini)