Coast to Coast with George Noory
Seventeen-year cicadas, also known as Brood II, is getting ready to emerge.
The big, harmless black bodied red-eyed insects with their orange-veined wings do not bite or sting, but they do suck sap out of young trees and shrubs.
Every 17th year, a few weeks before emerging, the cicadas build exit tunnels to the surface. When the soil temperature exceeds 64 degrees Fahrenheit (18 Celsius), nymphs leave their burrows usually after sunset, settle on a nearby tree or shrub, and start their final molt to adulthood.
Biologists say when the noisy cicadas DO emerge, they will be visible everywhere as they climb vertical surfaces in search of a mate.
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