17 YEARS OF REST   After a 17 year nap cicadas emerge from below ground in 14 states and as well as the nation's capital. Periodical cicadas are one of the great natural phenomena of the eastern deciduous forest of the United States. Twelve broods of 17-year cicada and three broods of the more southern 13-year cicada emerge from underground on different schedules in different regions of the eastern half of the United States. They occur nowhere else in the world. They have red eyes, red wing-veins, an astonishingly loud song, and emerge by the millions.