I'm no entomologist (insect expert), but I think size is species specific, and this great big bug looks similar in size to a big cicada season I experienced in the late 1950's or early 1960's in Illinois. It may not be the exact species, but the size is similar. They were everywhere, made a huge racket, and died off in hoards, and had to be raked.
I've noticed there seem to be a few that hatch out intermittently over the years, and I usually see a few each year most places I have lived, like currently in central North Carolina. Then there are the big hatch-outs when millions crawl out of the ground at once, the 7 year and 17 year batches.
Once or twice, I've been warned of the coming of a big cicada hatch, and it hasn't happened. I'm not sure how that uncertainty works, but it happens. Big warning, few if any bugs.
The other major insect hatch out I have experienced was mayflies in Michigan, zillions in the air all at once, but blessedly for campers, they all go to bed about eight p.m. and are quiet until after dawn. They collect in bunches like tumble weed once they have bred and deposited their eggs, and died. Lots of mid-air mating going on, and sometimes they dodge into a camper's tent to enjoy themselves.