page_title: Brood IX
section_title: Map of brood locations
hierarchical_section_title: Brood IX / Map of brood locations
caption_attribution_description: English: This is a USDA Forest Service map showing, county-by-county, where periodical cicada broods of the United States are located, and when they can next be expected to emerge
context_page_description: Brood IX, is one of 15 broods of periodical cicadas that appear regularly throughout the United States in 13- or 17-year intervals. Seventeen-year Brood IX is concentrated in Virginia, West Virginia, and North Carolina.
  Every 17 years in select locations in the eastern US, cicadas tunnel en masse to the surface of the ground, lay eggs, and then die off in several weeks. The combination of long dormancy, simultaneous emergence of vast numbers, and short period before the nymphs' burrowing underground to safety, allows the brood to survive even massive predation. Brood IX has been underground dormant in the Southern United States since 2003, and will emerge in 2020–2021. The emergence of Brood IX will not overlap with Brood X in spring 2021.
caption: USDA Forest Service map of periodical cicada brood locations and timing of next emergence
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