Stink Bugs And Curculios Stink bugs are sap feeders that feed on developing flowers, berries, or fruits, thus causing them to grow unevenly or become deformed. Curculios (snout beetles) chew into developing fruits of apple, pear, quince, and stone fruits. The hole made is used for feeding or as a site for eggs. Curculio larvae develop inside the attacked fruits, often causing premature fruit drop. The number of curculios in succeeding years can be reduced by gathering and destroying dropped fruit daily. Otherwise, spray to control curculio and stink bug by following a schedule developed for your state.