why do periodic cicadas only appear once every 17 years?
Periodic cicadas, specifically the species known as “17-year locusts” or “Magicicada septendecim,” have a life cycle that is particularly long and unusual. The reason they appear every 17 years is a result of their complex life cycle, which involves two different host plants and multiple stages. Periodic cicadas, belonging to the genus Magicicada, emerge from […]