Brood XI (17-year)
Brood XI was last recorded near the Ashford/Willington town line in eastern CT. The last recorded emergence was on a dairy farm in 1954; no sightings were recorded in 1971, 1988, or 2005. Records in RI seem doubtful, because of sandy and wet soils. (Manter 1974)
This map is intended to portray only an approximate, present-day brood distribution. It is based on previously published maps (Marlatt 1923). A project is currently underway to make new maps of periodical cicada broods. See the Magicicada mapping project homepage.
Literature:
Marlatt, C. 1923. The Periodical Cicada. United Stated Department of Agriculture, Bureau of Entomology Bulletin 71
Manter, J. A. 1974. Brood XI of the periodical cicada seems doomed. Pp. 99-100 in R. L. Beard, ed. 25th Anniversary Memiors of the Connecticut Entomological Society. Connecticut Entomological Society, New Haven.
Simon, C. 1988. Evolution of 13- and 17-year periodical cicadas. Bulletin of the Entomological Society of America 34:163-176.
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