t
eaten. When the larvae are fully grown, they drop to the ground, form cocoons
and pupate. Two generations may occur in a single season. Damage caused
by the grape sawfly rarely achieves economic proportions.Grape Sawfly, Erythraspdes vitis (Harris) (Hymenoptera: Tenthredinidae)
The grape
sawfly is a small, black, wasp-like insect that lays its eggs on the undersides
of terminal grape leaves. The larvae that hatch from these eggs feed in a
characteristic side-by-side manner at the edge of the leaf. Only the heaviest
leaf veins are not
eaten. When the larvae are fully grown, they drop to the ground, form cocoons
and pupate. Two generations may occur in a single season. Damage caused
by the grape sawfly rarely achieves economic proportions.
Current pesticide recommendations may be found HERE