Brood XI

Brood XI (Brood 11) was a brood of periodical cicadas that appeared regularly in the eastern United States. It was one of the smallest 17-year broods, consisting exclusively of the species Magicicada septendecim, and was historically restricted to areas of Connecticut, Massachusetts, and Rhode Island which appeared to be at the northern limit of the species' range. Brood XI has not been seen since its 1954 emergence and is now generally regarded as extinct.

Brood XI

Brood XI (Brood 11) was a brood of periodical cicadas that appeared regularly in the eastern United States. It was one of the smallest 17-year broods, consisting exclusively of the species Magicicada septendecim, and was historically restricted to areas of Connecticut, Massachusetts, and Rhode Island which appeared to be at the northern limit of the species' range. Brood XI has not been seen since its 1954 emergence and is now generally regarded as extinct.