On some tree species, annual sprays may control western poplar clearwing moth

Abstract

The western poplar clearwing moth, a serious pest to many species of western ornamental trees, can cause limb breakage or tree death in severe cases. In a study of three'species of ornamentals, the moth's development and infestation levels were measured in trees treated with carbaryl or chlorpyrifos. In heavily infested trees, annual insecticide applications provided control.