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Cicada FAQ

May 28, 2008 @ 09:53 PM

A primer on the cicada

What are they? Cicadas are a large insect that exist on nearly every continent, including about 2,500 species. The type currently inhabiting the region are known as magicicadas, more commonly known as 17-year cicadas. They are also colloquially known as 17-year locusts, although this is incorrect because the cicada is not related to the locust, which resembles a large grasshopper.

How long will they last? The cicadas are emerging after spending 17 years underground. Above ground they will mate, with the female laying her eggs in the shallow cuts of trees. The adult cicadas die, while the young cicadas hatch and molt, leaving behind a brown husk normally found clinging under the leaves of trees. After shedding their shells, the young cicadas burrow into the ground where they will live for the next 17 years. The entire process in the open lasts for roughly three weeks to a month.

Are they harmful? Cicadas are not harmful to humans or animals. They do not bite or sting and are not poisonous. In some parts of the world, and even within the United States, they are eaten as a delicacy. They are also frequently eaten by pets. The cicadas themselves do no real damage, though the process of the young falling from tree leaves and burrowing into the ground can damage fledgling trees and shrubs.

How do I protect my plants? Small trees or shrubs may be covered with netting or cheesecloth.