Cicadas 2024 Chicago. Sightings have already been reported so far, but. For the first time in over 200 years, a “double brood” emergence of two extremely large cicada populations, brood xiii and brood xix, will simultaneously rise out of the.
Here is everything you need to know about the. For the first time in more than 200 years, two different groups of periodic cicadas will emerge at the same time.