Read in NPR: https://apple.news/ARx9_dYCqSIeTwYtCpikllg
Great Southern Brood [XIX] will start appearing in late April through the first or second week of May across 15 states, mostly in the South, running from Virginia and into Alabama and Mississippi.
As for the Northern Illinois Brood [XIII], Shockley says people will start to see these cicadas closer to mid-May through the first week of June. The brood will be highly concentrated across four states, including Illinois, parts of Wisconsin, Indiana, and a bit of Michigan.
the overlap could result in "an extremely rare opportunity for genetic crossing between 13-year cicadas and 17-year cicadas that could lead to the emergence of a new brood."
All the experts NPR spoke with emphasized that the bugs' ephemeral emergence is not harmful to humans or pets. While the sheer amount of them may be shocking if you're in certain high density areas, they won't bite or sting you, says Larson. "Your pets will probably try to eat them," he adds. "And they're going to be OK."
Shockley added not to spray pesticides on the bugs. The chemicals could impact birds and small mammals that might feed on the cicadas. "Or it could hit non-target things like butterflies and bees that you actually want to have around your home," he says.