Double Cicada Brood 2024 Wikipedia. The northern illinois brood spends 17 years underground before surfacing and is known as brood xiii, while the great southern brood, or brood xix, lives underground for 13. With millions of cicadas set to emerge in.

Billions of cicadas are set to appear in a rare ‘double brood emergence,’ scientists say. The event jonathan larson, an extension entomologist at the university of kentucky, is referring to is the simultaneous emergence of two cicada broods that will erupt.