Life cycle traits give the invasive spotted-wing drosophila (Drosophila suzukii) a competitive edge over the native blueberry maggot fly (Rhagoletis mendax), pictured here—and also make it harder for growers to manage. That advantage will only grow as temperatures rise, a new study shows. (Photo by Jerry A. Payne, USDA Agricultural Research Service, Bugwood.org)