Every 13 or 17 years, an insect called a cicada will emerge from a long sleep underground. It’s actually part of their life cycle to remain dormant for that long of a time. While this summer’s brood will not hatch in Michigan, there are cicadas that emerge each year in addition to the really big broods that hatch every 17 years. These are the bugs that make that really, really loud and long buzzing/humming noise every summer. They typically emerge in April, May, and June.
If you happen to see one, they’re both interesting and grotesque all at once.