Brood II—occurs along the eastern seaboard from Connecticut and southeastern New York to North Carolina; 1945, 1962.
Brood V—a compact brood that occurs in the eastern half of Ohio and throughout West Virginia except in the extreme southern part; 1948, 1965.
Brood VIII—occurs in western Pennsylvania, eastern Ohio, and the northern Panhandle of West Virginia; 1951, 1968.
Brood IX—occurs in West Virginia, western Virginia, and northwestern North Carolina; 1952, 1969.
Brood X—the largest brood; occurs in abundance over much of the northeastern quarter of the United States; 1936, 1953.
Brood XIX—occurs over much of the southern part of the United States; extends into the southern part of Illinois and to northern Missouri; 1946, 1959.
Brood XXIII—occurs in the Mississippi Valley from southern Indiana, southern Illinois, and Missouri to the Gulf; 1950, 1963.
The Cicada's Song
A few days after the periodical cicadas appear, their incessant drumming, or singing, is heard. Only the males have sound-producing apparatus, which consists of two shell-like inflated drums on the sides of the abdomen. Two strong muscles set the drums in motion.
The chorus begins at dawn. As the temperature rises, the volume swells. Throughout the day a blanket of sound rests over the countryside. In the evening the sound ceases.