A cicada is an insect known for its distinctive sound, produced by males to attract females. They belong to the family Cicadidae and are found in many parts of the world. Cicadas have large eyes, short antennae, and a stout body, typically measuring between 1 to 2 inches in length. Cicadas are famous for their life cycles, which can last several years. Some species, like the 17-year cicada, emerge in large numbers after spending most of their lives underground as nymphs. Once they emerge, they molt, mate, and lay eggs, continuing the cycle of life.