How to Manage Pests

Pests in Gardens and Landscapes

Navel orangeworm—Amyelois transitella

Navel orangeworm larvae are milky white to pink with a dark reddish brown head. Two crescent-shaped marks are found on the second segment behind the head. Adults have short snoutlike projections from the front of the head. They are grayish brown in color with irregular silver and dark markings on the wings.

Identification of species | Life cycle

Damage

Caterpillars enter fruit or nuts and feed directly on the fruit and nutmeats. Fruit and nuts are contaminated with large quantities of excrement and webbing.

Solutions

Complete harvest rapidly and early, and remove and destroy unharvested nuts from trees in winter. Natural enemies may provide some control.

Navel orangeworm larva
Navel orangeworm larva

Damage to almond
Damage to almond


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