There are several generations per year. Adult Peach Tree Borer Adult peach tree borers are glassy, dark blue moths that resemble wasps. Their hind wings are transparent, and they have orange on their abdomen. Larvae are about an inch long, white with a brown head. The larvae bore in the crown area of stone fruits and almonds.
Damage is indicated by masses of gum and brown castings on the trunk.
Peach-tree borer larvae overwinter under the bark near the groundline. Peach Twig Borer Adult moths are steel gray with white and dark scales. The adults are active at night and hide in crevices in the bark during the day. The larvae are pinkish to dark brown in color and bore into twigs and buds of fruit trees in the spring. Their activity stops growth or kills the shoot.