Insect Defoliators of Missouri Trees: Colony Feeders
All parts of a tree are susceptible to insect attack; there are leaf feeders, sap feeders, and bud, twig, branch and stem borers. The most noticeable type of tree injury is foliage consumption. This article discusses some of the common "colony feeding" pests of Missouri.
The link address is: http://muextension.missouri.edu/xplor/agguides/pests/g07270.htm