The Lower Mississippian Brood

13-year Brood XXII is a small brood found near Baton Rouge, Louisiana. It contains only Magicicada tredecim, M. tredecassini, and M. tredecula. Surprisingly, Brood XXII has a disjunct in southern Ohio and northern Kentucky, containing the same three species; notably, this disjunct lacks M. neotredecim (Kritsky et al. 2017).

In the map below, cicada symbols are verified records in our database as of February 2021. Gold symbols are from Simon (1988); smaller symbols are records with a lower degree of certainty, and crosses represent records that are considered spurious. Blue symbols are from Marlatt (1923); smaller symbols are records with a lower degree of certainty, and question marks represent records that are considered spurious. Symbols are in layered in the order Database, Simon, Marlatt, and symbols in the upper layers may obscure symbols in lower layers. This map may not be reproduced without written permission.

Literature

Kritsky, G., R. Troutman, D. Mozgai, C. Simon, S. M. Chiswell, S. Kakishima, T. Sota, J. Yoshimura, and J. R. Cooley. 2017. Evolution and Geographic Extent of a Surprising Northern Disjunct Population of 13-year Cicada Brood XXII (Hemiptera: Cicadidae, Magicicada). The American Entomologist 63:E15-E20.

Marlatt, C. L. 1923. The Periodical Cicada. United States Department of Agriculture, Bureau of Entomology Bulletin 71:1-183.

Simon, C. 1988. Evolution of 13- and 17-year periodical cicadas. Bulletin of the Entomological Society of America 34:163-176.