They've been named the Great Southern Brood and the Northern Illinois Brood. Cicadas have a weird life cycle. They grow underground, but we humans mostly pay attention to them when they emerge ...

This year, trillions of those creatures are emerging in various U.S. states, including Illinois ... This is like the life cycle of cicadas. Prime numbers are intriguing numbers indeed.

Brood XIII (13) will emerge in mid-May and ending in late June, and unlike the other brood, these cicadas have a 17-year life cycle ... are expected to overlap in Illinois and Iowa.

During that period, the cicadas mature, mate and lay eggs before dying off, with their offspring beginning the cycle again. The timing of their emergence is influenced by soil temperatures ...

These black-bodied, red-eyed, winged insects crawl out of the ground from around late May to June to reproduce and begin their life-cycle anew ... but are expected to be concentrated in Illinois.

During those weeks, the cicadas mature, mate and lay eggs before dying off, and then their offspring begin the cycle anew. Climate change is also affecting the timing of the insects' arrival.

What’s the life cycle of a cicada ... 2024 in Park Ridge, Illinois. Female cicadas die after mating once. The males mate until they can’t anymore, then die off, leaving a lot more males ...

Brood XIV cicadas will emerge in numbers around the lower billions in 13 states, including Ohio and parts of Greater.