However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing, kidney problems (such as change in the amount of urine). This is not a complete list of possible side effects.
They are more active when it is cooler, but they can and do come out of hiding at any time of the day. Here in the desert, Arizona Rattlesnakes can easily overheat and die if they cannot find a cool place to keep themselves cool.
Scorpions in Arizona About 40-60 species occur in Arizona, although many are undescribed. The bark scorpion (Centruroides sculpturatus) is the only species in Arizona of medical importance.In the U.S. the bark scorpion is found in southeastern California, Arizona, Nevada, southern Utah, and southwestern New Mexico.