Brood XXIII (13-year)
The Lower Mississippi Valley Brood
Brood XXIII has a close relationship with Brood XIX. Brood XXIII contains populations of M. neotredecim but does not show as strong a pattern of reproductive character displacement as Brood XIX. An odd, isolated population of Brood XXIII is found in DeWitt County, IL.
Brown symbols on the map above were generated from verified records in the Cicada Central Database on 14 March 2016.
Blue symbols on the map are based on Marlatt (1923).
Gold symbols are based on Simon (1988); smaller symbols are records with a lower degree of certainty.
These records have not been field checked.
A project is currently underway to make new maps of periodical cicada broods. See the Magicicada mapping project homepage and the Geospatial Data Clearinghouse.
Marlatt, C. 1923. The Periodical Cicada. United States Department of Agriculture, Bureau of Entomology Bulletin 71.
Simon, C. 1988. Evolution of 13- and 17-year periodical cicadas. Bulletin of the Entomological Society of America 34:163-176.