Homoptera are similar to the Hemiptera true bugs. In addition to differences in the origin of their sucking mouthparts, Homoptera have a uniformly thickened forewings that overlap slightly at the tips. Homoptera groups include cicadas, leaf hoppers, whiteflies, aphids and scale insects.
Cicada own the reputation of being the loudest animal in the world. Producing a loud whining sound with two tymbal structure that is greatly amplified with air-filled resonating chambers, the cicada is also a proficient ventriloquist, making it hard to locate the actual source of the noise. The ancient Greek revered this insect and the Chinese made jade cicada amulets. These amulets were placed under the tongue of the deceased to induce resurrection. This symbolism comes from an observance of immature cicada emerging fresh from their molded skins.