Farmers' bulletin (United States. Dept. of Agriculture); no. 843

"The pecan has a number of important insect enemies of more or less extended distribution. Some of these injure the nuts, others the foliage and shoots, and still others the trunk and branches. Owing to the wide diversity in their methods of attack, no general directions for the control of these pests can be given, and in the adoption of remedial measures the peculiar habits of each species must be considered. This bulletin describes the more important insects that injure pecans and suggests the methods that should be followed to avert damage." -- p.