America's second-largest cicada swarm is about to emerge across the East Coast

The debased hum of summertime typically includes lawnmowers and sizzling burgers — and this year, it whitethorn beryllium the sound of cicadas. 

This year’s brood of insects whitethorn beryllium the second-biggest ever.

Two types of cicadas commonly beryllium successful the Eastern United States: yearly cicadas, which look each year, and periodical cicadas, which look each 13 oregon 17 years, according to the Environmental Protection Agency (EPA). The insects reside chiefly successful trees and shrubs.

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Broods are a mode of categorizing cicadas based connected this pattern, and little of a biological trait.

Because broods look successful antithetic areas, places that had cicadas past twelvemonth whitethorn not person them this year, according to Dr. John R. Cooley, subordinate professor-in-residence of ecology and evolutionary biology astatine the University of Connecticut.

Two types of cicadas commonly beryllium successful the Eastern United States: yearly cicadas and periodical cicadas. (iStock)

Brood XIV is referred to arsenic a "keystone" brood, Cooley told Fox News Digital. 

It is the second-largest down Brood XIX, the "Great Southern Brood," which past emerged successful 2024 successful 15 states from Oklahoma to Maryland.

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While determination is different "Great Eastern Brood" – Brood X, which emerged successful 2021 – Brood XIV is larger, and could frankincense beryllium considered the "Great(er) Eastern Brood." 

Brood XIV volition look successful states ranging from Georgia each the mode up to New York, according to the University of Connecticut.

Because of the mode broods look successful antithetic areas, places that had cicadas past twelvemonth whitethorn not person them this year. (iStock)

What to expect during an emergence

"Once an emergence gets going, it lasts astir a month, depending connected the weather," Cooley said.

"It seems similar the upwind this twelvemonth has been rather unusual — the emergence is good underway successful North Carolina, but further north, due to the fact that of the acold weather, it hasn’t adjacent truly started yet successful Pennsylvania," helium added.

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Adult cicadas ascent into trees and shrubs to mate, and past females deposit their eggs onto tiny twigs. 

The babies, called nymphs, hatch from these eggs aft six weeks and autumn to the ground. They past burrow into the ungraded and statesman feeding connected the roots of trees and shrubs to restart the cicada lifecycle, according to the EPA.

Cicada emergences typically past astir a month, according to an expert. (iStock)

Cicadas volition not devour leaves, flowers, fruits oregon garden produce, truthful it is not indispensable to instrumentality peculiar precautions to screen oregon use further insecticides successful your garden, the supra root stated.

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"People should support successful caput that what they are seeing is unsocial — determination is nary different spot successful the satellite wherever specified a happening happens, and they are recovered lone successful the U.S.," Cooley pointed out.

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The EPA besides notes that cicadas don't wound oregon sting, and they are not harmful to humans, pets, household gardens oregon crops.