Integrated Pest Management

Damage

Attacks all deciduous tree fruits. A crescent-shaped scar (C) is left by egg laying activities of the adult on the young apple and pear fruit beginning shortly after petal fall. The larvae bore into and create galleries in stone fruits. In August, the adults that will overwinter (north) or those that will produce a second generation (south) feed on fruits (D) before seeking overwintering sites in leaf litter near the orchard. Some oviposition of this brood also results in larval fruit infestations in late summer.

Management

Monitor regularly for fresh damage on fruit. Apply protective sprays during the egg laying period, starting at petal fall; a degree-day model can be used to predict the portion of the oviposition period during which insecticide protection would be required.