Periodical Cicadas

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Brood X (17-year)

The Great Eastern Brood

Brood X is the largest (by geographic extent) brood of 17- year cicadas. Populations historically recorded from KY may be off-cycle emergences of Brood XIV (see: Lloyd and White 1976). Brood X has also been reported from MO; however, current opinion on these records is that they date from a co-emergence of XIX and X, and that they were mistakenly attributed to X. For a discussion of Brood X in MO, see: Marshall 2001). MI populations are generally only M. septendecim; however, M. cassini has been recorded in the state (Marshall et al. 1996).
This map is intended to portray only an approximate, present-day brood distribution. It is based on previously published maps (Marlatt 1923; Simon 1988) and unpublished data. However, it has not been field checked, and it does not portray historical reports of brood emergences. A project is currently underway to make new maps of periodical cicada broods. See the Magicicada mapping project homepage.
Literature:
Lloyd, M., and J. A. White. 1976. Sympatry of Periodical Cicada Broods and the Hypothetical Four-Year Acceleration. Evolution 30:786-801.
Marlatt, C. 1923. The Periodical Cicada. United Stated Department of Agriculture, Bureau of Entomology Bulletin 71
Marshall, D. C. 2001. Periodical cicada (Homoptera : Cicadidae) life-cycle variations, the historical emergence record, and the geographic stability of brood distributions. Annals Of The Entomological Society Of America 94:386-399.
Marshall, D. C., J. R. Cooley, R. D. Alexander, and T. E. Moore. 1996. New records of Michigan Cicadidae (Homoptera), with notes on the use of songs to monitor range changes. Great Lakes Entomologist 29:165-169.
Simon, C. 1988. Evolution of 13- and 17-year periodical cicadas. Bulletin of the Entomological Society of America 34:163-176.