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Extension > Garden > Diagnose a problem > What insect is this? > Garden Pests > Caterpillars, maggots, grubs, and similar immature insects - Larger than 3/4 inch long > Green fruitworm

Green fruitworm

Lithophane antennata

Green fruitworm

Michigan State University

Size: Up to 1 1/4 - 1 1/2 inches long

Where/When: Feeds on the foliage, buds, blossoms, and fruits of apple. Also found on oak, ash, cherry, elm, and other trees. The larva is active from May until June.

Significance: Damaged fruits have large, sunken, corky wounds at harvest or may fall early from the tree. Damage is restricted to one or two fruit clusters. Damaged fruits may be hollowed out or partially eaten.

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