Md. Within days, a couple weeks at most, the cicadas of Brood X (the X is the Roman numeral for 10) will emerge after 17 years underground. There are many broods of periodic cicadas that appear on rigid schedules in different years, but this is one of the largest and most noticeable....
Cicadas are a family of about 3,000 species of sound-producing insects. Male cicadas produce loud noises by vibrating membranes (tymbals) near the base of the abdomen. Some North American species occur in large numbers in chronologically and geographical