Billions of cicadas are set to rise out of the ground in New York
, Maryland, Ohio, Pennsylvania, Virginia and West Virginia
next month. REEDER/AP
Cicadas emerge from their exoskeletons in 2004. Enlarge STEPHEN JAFFE/AFP/Getty Images A child holds up a cicada in Virginia in 2004. Billions of cicadas set to invade East Coast
this spring Tags: animals . They
spend several weeks above ground mating and laying eggs in trees before dying off.