God In Detail.
Cyclical Journey of the 13-year periodical Magicicada.
Peter Herbert Barnaba Letter Press Collab.2017
13 Year Periodical Cicada (Magicicada) Periodical cicadas are unique in their combination of long, prime-numbered life cycles (13 or 17 years), precisely timed mass emergences, and active choruses. Periodical cicadas are found only in eastern North America. There are seven species -- four with 13-year life cycles and three with 17-year cycles. The three 17-year species are generally northern in distribution, while the 13-year species are generally southern and midwestern. Magicicada are so synchronized developmentally that they are nearly absent as adults in the 12 or 16 years between emergences. When they do emerge after their long juvenile periods, they do so in huge numbers, forming much denser aggregations than those achieved by most other cicadas.
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God In Detail.