Tymbals are specialized sound-producing structures found in certain insects, most notably in the cicada family. These structures are typically located on the abdomen and consist of a thin, flexible membrane that vibrates to create sound. When the insect contracts its muscles, the tymbals buckle inward and then snap back, producing a distinctive clicking or buzzing noise. The primary function of tymbals is communication, especially during mating season. Male cicadas use their tymbals to attract females by producing loud calls that can be heard over long distances. This unique sound production is a key characteristic of many cicada species, contributing to their recognition and behavior.