Search results
Learn about the concept of broods, the bookkeeping construct that groups cicadas emerging in a given year in a given area. Explore the maps of brood distributions, the straggling and spurious broods, and the possible origins of brood formation.
Broods. Periodical cicadas are grouped into geographic broods based on the calendar year when they emerge. For example, in 2014, the 13-year Brood XXII emerged in Louisiana and the 17-year Brood III emerged in western Illinois and eastern Iowa.
May 3, 2024 · Learn about the rare event of two cicada broods, Brood XIII and Brood XIX, waking up in the same season in 2024. See the map of their distribution and find out why they emerge in such huge numbers.
- Brian Resnick
Learn about the rare co-emergence of 13-year Brood XIX and 17-year Brood XIII in Illinois in 2024, the largest and most diverse periodical cicada broods. See maps, photos, and scientific information about these cicadas and their life cycles.
Maps of Two Cicada Broods, Reunited After 221 Years. This spring, two broods of cicadas will emerge in the Midwest and the Southeast, in their first dual appearance since 1803. A cicada lays...
May 12, 2024 · Learn about the double brood emergence of periodical cicadas, a natural wonder that happens every 13 or 17 years in the eastern US. Find out how to observe, identify and protect these insects and their habitat.
Two broods of cicadas will emerge this summer at level not seen since 1803. 05:03. After 2024, Brood XIII and Brood XIX cicadas won’t sync up their emergences again for another 221 years....
