How to Manage Pests

Pests in Gardens and Landscapes

Seasonal development and life cycle—Oriental fruit moth

Oriental fruit moth overwinter as mature, diapausing larvae inside tightly woven cocoons in protected places on the tree or in the trash near the base of the tree. In early spring, pupation takes place inside the cocoon and adults begin emerging in February or early March. Eggs are deposited on newly emerged shoots and the larvae feed in terminals where they complete their development. Eggs are disc-shaped, white to creamy in color when first laid, and about 0.03 inch in diameter. Second-generation larvae feed in shoots, but fruit of some of the earlier cultivars may also be attacked. Subsequent generations may attack shoot terminals and green fruit, but as fruit matures it becomes the preferred site of attack by this pest. There are usually five generations per year in California, although a sixth generation has been observed in years with warm weather in early spring.

Larva
Larva
Feeding by larvae
Feeding by larvae
Adult
Adult
Pupa
Pupa

Statewide IPM Program, Agriculture and Natural Resources, University of California
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