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Extension > Garden > Diagnose a problem > What insect is this? > Trees and shrubs > Caterpillars, maggots, grubs, and similar immature insects - 1 to 2 inches long > Gypsy moth

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Gypsy moth

Lymantria dispar

Colorado potato beetle

Bill McNee, Bugwood.org


Description: 2 inches long. Yellow markings on the head with black, dark gray or blue body coloration and hairy. Five pairs of blue spots followed by six pairs of red spots running the length of the body.

Where/When: Feeds on 100’s of plants including many hardwood trees, like oak, apple, birch, and willow. Present May to June.

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