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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 > Elm sawfly

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Elm sawfly

Cimbex americana

Elm sawfly larvae

Dawn Dailey O'Brien, Bugwood.org


Description: 1 1/2 - 2 inches long. Pale yellow or green larvae with dark stripe down length of body.

Where/When: Hardwood trees including willow and elm along with occasionally alder, basswood, birch, maple and poplar. Present May to September.

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