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Ancient cicadas were quieter insects: study

NANJING, Jan. 12 (Xinhua) — A new study has shown that cicadas about 100 million years ago had yet to learn to produce the iconic buzzing sound that now characterizes summer days.

Cicada, referring to the superfamily Cicadoidea, includes the globally widespread Cicadidae, commonly known as singing cicadas, and Australia-only Tettigarctidae. The former can produce the loudest sounds among insects, reaching nearl