News These bugs have been underground for 17 years. This year, they’ll resurface in 15 states. January 26, 2021January 26, 2021 Keith Matheny and Georgea Kovanis, Detroit Free Press Comments Off on These bugs have been underground for 17 years. This year, they’ll resurface in 15 states. In places where periodical cicadas emerge en masse, “the noise is just head-splitting.”