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Smithsonian National Museum of Natural History
17-year Cicadas Brood II

Billions upon billions of periodical cicadas make a historical appearance this spring. "Brood II" is the species of 17-year cicadas scheduled to appear in this geographic region.

The cicada's curiously long life cycle still confounds scientists. Most theorize that the 13-year and 17-year growing up stage is a defense against predators. Although just about every animal (including humans) feasts on cicadas, their sheer numbers ensure their survival.

Brood II is one of twenty broods of periodical cicadas that live in eastern North America. Brood II cicadas can be found along the east coast from North Carolina all the way up to Connecticut. The last time Brood II appeared was 1996. Its next emergence will be 2030.

Learn more at the links on the right ...

Periodical Cicada Page on the Encyclopedia of Life

Audio Samples

Cicada Fact Sheet

Video Interview with Dan Babbitt of the Insect Zoo
Courtesy of WUSA-9

Slide Show and Interview Text
Courtesy of WUSA-9


Smithsonian entomologists are available to answer media questions about the insects that are expected to make their 17-year emergence this spring.

- Dan Babbitt, O. Orkin Insect Zoo
- Gary Hevel, Dept. of Entomology

CONTACT Ryan Lavery, Office of Public Affairs, 202-786-2950,
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