Extension > Garden > Diagnose a problem > What insect is this? > Trees and shrubs > Flies, moths, wasps,and other insects with obvious wings - Under 3/4 inch long > Common sawflies

Common sawflies

Tenthrinidae

Jeff Hahn, University of Minnesota Extension

Description: 3/16 - 1/2 inch long. Stout-bodied, wasp-like insects. They are typically dark colored, sometimes with orange, brown, or yellow. The wings have many veins.

Where/When: Feed on leaves of deciduous trees and shrubs including ash, aspen, azalea, birch, cottonwood, dogwood, elm, poplar, and willow during spring and summer; the exact timing depends on the species.

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