Cicadas are insects that make a unique noise. They are one of the largest noise-generating insects in the world and they sound by vibrating a special membrane in the abdomen.
However, recent studies have shown that the noise of large cicadas can damage human hearing. Small cicadas, on the other hand, produce high frequencies that humans can not hear.
Cicadas are usually found in trees and lay eggs in crevices in the bark. The larvae that fall on the ground dig a cave about 2.5 meters deep.
After living the sap of the root of the tree, most lives in the tunnel.
Cicadas also appear in folk tales and myths in some countries. They were used to predict money, medicines, and weather.
According to a legend about cicada, it takes about a month and a half from the first cicada's cry to winter.
Although cicadas can not accurately predict the beginning of winter, some people said the insect predicts seasonal changes precisely.
The sound of cicadas is a sign that summer will soon be over and the weather will be cool.
