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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 > Emerald ash borer

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Emerald ash borer

Agrilus planipennis

Emerald ash borer

Jeff Hahn, University of Minnesota Extension


Description: up to 1 1/4 inches long. White, flat body with a very small brownish head. Legs are absent and a pair of small pincer-like appendages are present on the tip of the abdomen.

Where/When: Found under the bark of ash trees where they create S-shaped tunnels. Present in all months of the year.

More information on Emerald ash borers

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