Cicadas are insects known for their distinctive sound, produced by males to attract females. They belong to the order Hemiptera and are found in various parts of the world, particularly in warm climates. Cicadas have large, transparent wings and a stout body, with some species being notable for their size. These insects have a unique life cycle, often spending several years underground as nymphs before emerging to mate and lay eggs. Some species, like the periodical cicadas, emerge in synchronized cycles of 13 or 17 years, creating a remarkable natural phenomenon when they appear in large numbers.