Plum Curculio Stings May 14 2014May 14, 2014 These are stings from the Plum Curculio on forming fruit. These don’t only attack plums, but also apples, peaches, pears, cherries, quince, and other wild and cultivated fruits. For more information on the Plum Curculio click the link below: Plum Curculio Fact Sheet