Adults feature a buff or tan color with darker tan or brown band oblique across middle of wing. A narrow light tan to yellow line separates the central band from the lighter colored remainder of the wing.
Light green in color, Pandemis eggs are laid in clusters on upper leaf surface. After about 10 days, eggs turn greenish as they near begin to hatch about 14 days after being laid.
Fully grown larvae are 0.5 – 0.75 in or 12 – 19 mm long and green with head capsule ranging from green to light tan. The summer generation larvae are present from late June or early July to mid August. Moths emerge again during August and early September and larvae overwinter under the bud scales.
Apples and pears.
- Newly emerged larvae feed on leaf tissue.
- Overwintered larvae feed on flower buds and on the surface of young fruit during and just after bloom, causing fruit to drop or to become scarred and distorted.
- Summer generation larvae tie leaves to fruit and cause small shallow (0.06 in or 1.5 mm) feeding scars, usually producing several small, circular holes in the fruit.
- Late season damage at harvest is difficult to detect because the pinhole entry site is fresh and usually beneath attached leaf.
- Two generations per year.
- Overwinters as young larvae in hibernacula in rough bark, pruning cuts or twig crotches.
- Pupation occurs in May.
- Adults emerge in late May to early June.