The Peach Twig Borer has become a common pest of peaches and other tree fruits. It can kill twigs and disfigure or infest fruit. The damage is similar to that caused by the oriental fruit moth. They attack apricots, nectarines, plums and prunes, as well as peaches.
The egg is yellowish white to orange and oval. The larva has a dark brown head and prothorax with distinctive alternating dark and light brown bands around the abdomen. The larva has 4 or 5 instars. A mature larva may grow to 1/2 inch (12 mm) long. The pupa is smooth, brown and does not reside in a cocoon. Pupae are usually found beneath bark scales or cracks in the bark. The adult moth is between 1/3 and 1/2 inch (8 to 12 mm) long. It is steel gray with white and dark scales.