Cicada Broods 2024 Illinois. The two emerging broods are brood xiii and brood xix, which haven't emerged simultaneously in 221 years. Download the periodical cicada 2024 broods of illinois fact sheet.
This overlap could result in some illinois residents hearing all seven species of the two broods singing their cacophonous mating calls together, he says. For the chicago area, brood xiii will be most seen in parts of northern illinois and indiana, and possibly even in wisconsin and ohio, in late may 2024, dr.