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Extension > Garden > Diagnose a problem > What insect is this? > Trees and shrubs > Caterpillars, maggots, grubs, and similar immature insects - Longer than 2 inches > Polyphemus moth caterpillar

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Polyphemus moth caterpillar

Antheraea polyphemus

Polyphemus moth caterpillar

Steven Katovich, Bugwood.org


Description: 3.5 inches long. Light green with sparse long hairs.

Where/When: Feeds on many woody plants, including ash, birch, grape, maple, oak and willow. Present from July through September.

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