The larvae of borers are difficult to control because they are protected within the tree during most of their lives. Proper care and maintenance to promote a healthy tree help prevent the attraction and establishment of the borers. Pruning dead or infested wood from trees helps prevent destructive borer populations. When insecticides are used, they act as a protectant, controlling some adults and reducing the risk of egg laying. Applications should be made just prior to the appearance of the adult.
Adults are elongate grayish beetles with long, slender antennae.
They emerge during mid summer. The white, legless larvae tunnel in trunks and branches for two to three years. They emerge in late June and can be active until August. Early infestations of trees start in 1 inch diameter branches, later including larger branches and the trunk as the tree's health weakens. Products recommended for the management of tree and shrub pests.