Cicada 2024 Facts4u. Where billions of cicadas will emerge this spring (and over the next decade), in one map. When periodical cicadas emerge from the ground, they come up in what are called broods.

In april 2024, trillions of periodical insects descended on the midwest and southeast of the united states, causing so much noise that local residents called the. Cicadas count years, likely using the flow of tree sap.