I live in Central Arizona. I traveled to Lake Roosevelt to put my boat in the lake and I found hundreds, if not thousands of these crawling, climbing and flying around the storage yard. It was horribly hot that day, roughly 105. these bugs seemed to stay in the sun. some of the bugs were eating leaves and the rest seemed interested in procreation only. The elevation was roughly 1300′ above sea level. The time of year was early May. The terrain was desert. Surrounding vegetation is short bushes and some mesquite trees, with little ground cover.
Your Iron Cross Blister Beetle mating frenzy is a nice addition to our Bug Love pages. These Blister Beetles are one of two possible species in the genus Tegrodera. It is most likely Tegrodera latecincta.