Utah State University Extension
Scorpions are eight-legged carnivorous arthropods and belong to the class Arachnida. This class also includes ticks, spiders, and mites. There are approximately 1,300 species of scorpions worldwide and 75 species in the United States, but only 9 are recognized in Utah (Table 1). Scorpions are usually found in semiarid deserts. Most species that occur in the United States have been found in Arizona, parts of Texas, and central Oklahoma.
Hodgson, Erin W. and Roe, Alan H., "Scorpions" (2008). All Current Publications. Paper 948.