The inspiring picture below, is segment of "17 Year Cicada" editorial which is listed within "Cicadas 17 Year", "17 Years Cicada" and "Cicada Why 17 Years".
17 Year Cicada: 17 Years Cicadas - Either a 13-year-old cicada or a 17-year-old cicada is without any parallel in the nature.
There exist 6 species of periodical cicadas: with a 17-year cycle (3) and with a 13-year cycle (3). But all those three species of each life-cycle group differ in size, color, and sound. The 17-year-old cicadas tend to locate in the North, while the 13-year-old ones - in the South. Nevertheless, both types may emerge in the same forest.
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