<Tr> <Td_colspan="2"> Magicicada septendecim (Linnaeus, 1758) </Td> </Tr> <P> Magicicada is the genus of the 13 - year and 17 - year periodical cicadas of eastern North America . Although they are sometimes called "locusts", this is a misnomer, as cicadas belong to the taxonomic order Hemiptera (true bugs), suborder Auchenorrhyncha, while locusts are grasshoppers belonging to the order Orthoptera . Magicicada belongs to the tribe Lamotialnini, a group of cicada genera with representatives in Australia, Africa, and Asia, as well as the Americas . </P> <P> Magicicada species spend most of their 13 - and 17 - year lives underground feeding on xylem fluids from the roots of deciduous forest trees in the eastern United States . After 13 or 17 years, mature cicada nymphs emerge in the springtime at any given locality, synchronously and in tremendous numbers . After such a prolonged developmental phase, the adults are active for about 4 to 6 weeks . The males aggregate into chorus centers and attract mates . Within two months of the original emergence, the lifecycle is complete, the eggs have been laid, and the adult cicadas are gone for another 13 or 17 years . </P> <P> The familiar winged imago (adult) periodical cicada has red eyes and a black dorsal thorax . The wings are translucent and have orange veins . The underside of the abdomen may be black, orange, or striped with orange and black, depending on the species . </P>

Every how many years do cicadas come out
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