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Extension > Garden > Diagnose a problem > What insect is this? > Trees and shrubs > Caterpillars, maggots, grubs, and similar immature insects - Under 1 inch long > Yellowheaded spruce sawfly

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Yellowheaded spruce sawfly

Pikonema alaskensis

Yellowheaded spruce sawfly

Jeff Hahn, University of Minnesota Extension


Description: Up to 3/4 inch long. Yellow to reddish brown heads with olive-green body and six gray-green stripes.

Where/When: Feed on the new needles of white, red, black, blue, Norway and Englemann spruce. Present late May to early July.

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