Magicicada Brood III (3), the Iowan Brood, will emerge in Iowa, Illinois, and Missouri, in the spring of 2014.
Update for 6/18: It has been great to see so many people are enjoying the emergence. I bolded the names of the counties below, where people have reported emergences in the comments.
Update for 5/31: Cicadas have been reported in Dallas, Union, and Warren counties in Iowa, and Mercer county in Missouri.
Update for 5/30: Greg Holmes reported on the Entomological-Cicadidae Yahoo Group that Donald Lewis, entomologist at Iowa State University, has a report of periodical cicadas from north of Burlington, IA. With air temperatures in the mid 80s for the next 6 days, the soil should be warm enough to coax more cicadas from the ground. Rain may slow the emergence, though.
Some Brood III facts:
- Brood III Magicicadas have a 17-year life cycle.
- The last time Brood III emerged was 1997.
- All three 17-year species will emerge: M. septendecim, M. cassini, and M. septendecula.
Looking a the Cicada Central Magicicada Database:
- Iowa will likely experience Brood III in Appanoose, Boone, Decatur, Des Moines, Hamilton, Henry, Lee, Louisa, Lucas, Mahaska, Van Buren, Washington counties.
- There are literature records (typically older, and not substantiated by recent evidence) that the cicadas will also emerge in the counties: Adair, Adams, Audubon, Cass, Cedar, Davis, Greene, Guthrie, Iowa, Jasper, Jefferson, Johnson, Keokuk, Madison, Marion, Marshall, Monroe, Muscatine, Polk, Poweshiek, Ringgold, Story, Taylor, Union, Wapello, Warren, Wayne and Webster.
- Plus reports from Clarke, Dallas County!
- Missouri literature records: Adair, Harrison, Harrison, Henry, Johnson, Lewis, Macon, Marion, Platte, Putnam,Vernon
- Illinois: Adams, Brown, Cass, Fulton, Hancock, Henderson, Knox, McDonough, Peoria, Pike, Schuyler, Warren, and maybe (literature records) Champaign, Greene, and Mason.