One member of this family, Brevisana brevis, the "shrill thorntree cicada", is the loudest insect in the world, able to produce a song that exceeds 100 decibels. Ecology Communication Ĭicadas are known for the loud airborne sounds that males of most species make to attract mates. The most well-known periodical cicadas, genus Magicicada, emerge as adults every 13 or 17 years. Periodical cicadas also have multiple-year life cycles but emerge in synchrony or near synchrony in any one location and are absent as adults in the intervening years. Annual cicadas remain underground as nymphs for two or more years and the population is not locally synchronized in its development, so that some adults mature each year or in most years. Life cycle Ĭicadas are generally separated into two categories based on their adult emergence pattern.
Description Ĭicadas are large insects characterized by their membranous wings, triangular-formation of three ocelli on the top of their heads, and their short, bristle-like antennae. The oldest known definitive fossils are from the Paleocene, a nymph from the Cretaceous Burmese amber has been attributed to the family, but could also belong to the Tettigarctidae. Cicadidae, the true cicadas, is the largest family of cicadas, with more than 3,200 species worldwide.
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