Cicada 2024 Timeline Chart. In spring and summer 2024, billions of cicadas — bugs with a characteristic long and droning buzz — will emerge together after patiently biding their time underground for 17 years. In a few weeks, over a dozen states will be abuzz as trillions of periodical cicadas will emerge from their yearslong.

 — where billions of cicadas will emerge this spring (and over the next decade), in one map. One of the most peculiar of north america’s natural wonders — the synchronized mass mating frenzies of big, obsessed insects called periodical cicadas — is.