Walking into the house after dark, I snap on the light and notice a thumb-sized lump under my shirt, right above my navel. Itâs moving, though I donât feel anything. I lift the shirt and there, clinging to the other side of the green cotton, is a periodical cicada. I pull it off, carry it outside and give it a toss. A dry rattle as it flutters off into the night. Maybe those strange red eyes can see in the dark. For seventeen years â" an eternity for most insects â" theyâve been living complet