Of the winged insects, adults have one or two pairs of wings. During the past 250 million years of insect evolution, there have been no exceptions to this. In a fascinating study, Benjamin Prud'homme, Caroline Minervino, Mélanie Hocine, Jessica Cande, Aïcha Aouane, Héloïse Dufour, Victoria Kassner, and Nicolas Gompel may have found something resembling an exception.