The Shenandoah Valley Brood
Brood I is among the smallest broods of 17-year cicadas. The brood is found in the Shenandoah Valley near the Blue Ridge Mountains, with sparse populations along the Blue Ridge Parkway and on Massanutten Mountain. Brood I has disjunct populations on Long Island and near Bristol VA/Bristol TN.
Cooley, J. R. 2015. The distribution of periodical cicada (Magicicada) Brood I in 2012, with previously unreported disjunct populations (Hemiptera: Cicadidae). The American Entomologist 61:52-57.
Marlatt, C. L. 1923. The Periodical Cicada. United States Department of Agriculture, Bureau of Entomology Bulletin 71:1-183.
Simon, C. and Lloyd, M. 1982. Disjunct synchronic population of 17-year periodical cicadas: Relicts or evidence of polyphyly? Journal of the New York Entomological Society, 110, 275-301.
Simon, C. 1988. Evolution of 13- and 17-year periodical cicadas. Bulletin of the Entomological Society of America 34:163-176.