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.^[1]

Mites

Clover mite

Red spider mite

• Bindweed gall mite (Aceria malherbae)^[2]
• Clover mite (Bryobia praetiosa)^[2]
• Pearleaf blister mite (Eriophyes pyri)^[2]
• Poplar budgall mite (Eriophyes parapopuli)^[2]
• Pseudoscorpion (various)^[2]
• Red spider mite (Tetranychus urticae) - also called "two-spotted spider mite"^[3]
• Red velvet mite (thousands of species)^[1]
• Spruce spider mite (Oligonychus ununguis)^[2]
• Tomato russet mite (Aculops lycopersici)^[2]
• Western predatory mite (Galendromus occidentalis)^[1]

Scorpions

Giant hairy scorpion under UV light

• Arizona bark scorpion (Centruroides exilicauda)^[4]
• Beck desert scorpion (Paruroctonus becki)^[4]
• Black hairy scorpion (Hadrurus spadix)^[4]
• Eastern sand scorpion (Paruroctonus utahensis)^[4]
• Giant desert hairy scorpion (Hadrurus arizonensis)^[4]
• Northern scorpion (Paruroctonus boreus)^[4]
• Sawfinger scorpion (Serradigitus wupatkiensis)^[4]
• Wood scorpion (Anuroctonus phaiodactylus)^[4]
• Yellow ground scorpion (Vaejovis confusus)^[4]

Spiders

Western black widow spider

Bold jumping spider

Hobo spider

Salt Lake County brown tarantula

Wolf spider with spiderlings

Cellar spider (daddy long-legs)

• American grass spider (Agelenopsis spp.)^[2]
• American yellow sac spider (Cheiracanthium inclusum)^[2]
• Ant spider (Micaria pasadena)^[5]
• Ant spider (Micaria rossica)^[5]
• Antmimic spider (Meriola decepta )^[5]
• Banded orb weaving spider (Argiope trifasciata)^[2]
• Bold jumping spider (Phidippus audax)^[2]
• Bull-headed sac spider (Trachelas mexicanus)^[5]
• Camel spider (Ammotrechula spp.)^[2]
• Camel spider (Eremobates spp.)^[2]
• Carolina wolf spider (Hogna carolinensis)^[6]
• Cat-faced spider (Araneus gemmoides)^[2]
• Cellar spiders (Pholcus phalangioides) - also called "daddy long-legs"^[2]
• Crab spider (Bassaniana utahensis)^[2]
• Crab spider (Ebo merkeli)^[5]
• Crab spider (Ebo pepinensis)^[5]
• Crab spider (Mecaphesa spp.)^[2]
• Crab spider (Xysticus discursans)^[5]
• Crab spider (Xysticus emertoni)^[5]
• Crab spider (Xysticus facetus)^[5]
• Crab spider (Xysticus paiutus)^[5]
• Crab spider (Xysticus pellax )^[5]
• Eastern parson spider (Herpyllus ecclesiasticus)^[5]
• False black widow (Steatoda grossa)^[2]
• Flat-bellied ground spider (Callilepis mumai)^[5]
• Flattened crab spider (Philodromus histrio)^[5]
• Flattened crab spider (Philodromus imbecillus)^[5]
• Flattened crab spider (Philodromus satullus)^[5]
• Flattened crab spider (Philodromus spectabilis)^[5]
• Ground spider (Cesonia gertschi)^[5]
• Ground spider (Drassodes spp.)^[2]
• Ground spider (Drassyllus inanus)^[5]
• Ground spider (Drassyllus lepidus)^[5]
• Ground spider (Drassyllus mexicanus)^[5]
• Ground spider (Drassyllus nannellus)^[5]
• Ground spider (Gnaphosa californica)^[5]
• Ground spider (Gnaphosa clara)^[5]
• Ground spider (Gnaphosa dentata)^[5]
• Ground spider (Gnaphosa salsa)^[5]
• Ground spider (Gnaphosa saxosa)^[5]
• Ground spider (Gnaphosa sericata)^[5]
• Ground spider (Gnaphosa synthetica)^[5]
• Ground spider (Herpyllus cockerelli)^[5]
• Ground spider (Herpyllus convallis)^[5]
• Ground spider (Micaria nanella)^[5]
• Ground spider (Sergiolus lowelli)^[5]
• Hobo spider (Tegenaria agrestis)^[2]
• Huntsman spider (Olios fasciculatus)^[2]
• Huntsman spider (Olios giganteus)^[5]
• Jumping spider (Habronattus conjunctus)^[5]
• Jumping spider (Habronattus signatus)^[5]
• Jumping spider (Habronattus tarsalis)^[5]
• Jumping spider (Pelegrina verecunda)^[5]
• Jumping spider (Platycryptus arizonensis)^[5]
• Jumping spider (Salticus peckhamae)^[5]
• Jumping spider (Terralonus unicus)^[5]
• Mormon ant spider (Micaria mormon)^[5]
• Mormon ground spider (Drassyllus mormon)^[5]
• Running crab spider (Titanebo dondalei)^[5]
• Running crab spider (Titanebo magnificus)^[5]
• Sac spider (Castianeira nanella)^[5]
• Sac spider (Drassinella unicolor)^[5]
• Sac spider (Phrurotimpus borealis)^[5]
• Sac spider (Phrurotimpus nr. woodburyi)^[5]
• Salt Lake County brown tarantula (Aphonopelma iodius)^[6]
• Slender crab spider (Tibellus chamberlini)^[5]
• Slender crab spider (Tibellus duttoni)^[5]
• Striped lynx spider (Oxyopes scalaris)^[2]
• Texas running crab spider (Titanebo texanus)^[5]
• Utah crevice weaver (Kukulcania utahana)^[2]
• Utah ground spider (Gnaphosa utahana)^[5]
• Western black widow spider (Latrodectus hesperus)^[6]
• White-banded crab spider (Misumenoides formosipes)^[2]
• Wolf spider (Hogna spp.)^[2]
• Woodlouse spider (Dysdera crocata)^[6]

Other

Opiliones, or daddy-long-legs.

• Opiliones (harvestman, "daddy long-legs")^[1]
• Rocky Mountain wood tick (Dermacentor andersoni)^[2]
• Soft-bodied tick (Ornithodoros spp.)^[2][7]
• Spinose ear tick (Otobius megnini)^[2]