The Onondaga Brood
Brood VII, the Onondaga Brood, contains only M. septendecim and is currently found associated with the Onondaga Nation in upstate New York. Now-extinct populations near Rochester seem well documented, and several collections exist from Great Gully populations. Although the brood appears to be contracting, in localized areas during 2001 and 2018, densities were among the highest observed in any periodical cicada brood. For more information see Cooley et al. (2004); Pechumen (1968); Pechumen (1984).
In the map below, cicada symbols are verified presence records and red crosses are verified absence records in our database as of August 2023. Gold symbols are from Simon (1988); smaller symbols are records with a lower degree of certainty and black 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. Some absence records in the database are not shown for clarity. This map may not be reproduced without written permission.
Cooley, J. R., Neckermann, M. L., Bunker, G. J., Marshall, D. C., & Simon, C. 2013. At the limits: Habitat suitability modeling of Northern 17-year periodical cicada extinctions (Hemiptera: Magicicada spp.). Global Ecology and Biogeography, 22(4): 410-421.
Cooley, J. R., D. C. Marshall, and C. Simon. 2004. The historical contraction of periodical cicada Brood VII (Hemiptera: Cicadidae: Magicicada). Journal of the New York Entomological Society 112:198-204.
Gilbert, C., and C. Klass. 2006. Decrease in geographic range of the Finger Lakes Brood (Brood VII) of the periodical cicada (Hemiptera: Cicadidae: Magicicada spp.). Journal of the New York Entomological Society 114:78-85.
Marlatt, C. L. 1923. The Periodical Cicada. United States Department of Agriculture, Bureau of Entomology Bulletin 71:1-183.
Pechumen, L. L. 1968. The periodical cicada, Brood VII (Homoptera: Cicadidae: Magicicada). Transactions of the American Entomological Society 94:137-153.
Pechumen, L. L. 1984. The Periodical Cicada: Brood VII revisited (Homoptera: Cicadidae). Entomological News 96:59.
Simon, C. 1988. Evolution of 13- and 17-year periodical cicadas. Bulletin of the Entomological Society of America 34:163-176.