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Extension > Garden > Diagnose a problem > What insect is this? > Garden Pests > Caterpillars, maggots, grubs, and similar immature insects - 1/4 inch - 1/2 inch long > Columbine sawfly

Columbine sawfly
Photo Credit: Jeff Hahn

Columbine sawfly
Pristophora aquiligae
Size: Up to ¾ inch long

Where/When: Feeds on columbine foliage, starting along the edge of the leaf. Active during May.

Significance: May eventually defoliate columbine except for the larger veins.
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