Descriptive information prepared by entomologists at Iowa State University. Plum curculios are pests of peaches, plums, cherries, and apples.
Overwintering adults begin to appear in orchards about the time apples are in the pink stage.
These injuries may later result in deformed fruit. The larvae usually eat into the flesh of apples to the core and seeds. There is one generation each year in Iowa. Cooperative Extension Service, Iowa State University of Science and Technology and the United States Department of Agriculture cooperating. Robert M. Anderson, Jr., director, Ames, Iowa.