Dogwood Club-Gall Midge

Disease Information

Dogwood Club-Gall Midge

 Symptoms and damage

The dogwood club-gall midge (Resseliellaclavula) is a small fly, about 1/16-inch long. The female lays eggs in tiny terminal leaves of the dogwood. The larva hatches and enters the shoot. In response to the feeding and growth of the larva, a ½-1 inch long club- or spindle-shaped tubular swelling (gall) forms at the tip or along the stem. The twig beyond the gall may die. In early fall, the larvae make exit holes in the galls. They drop to the ground where they survive the winter. An early symptom of a club-gall midge presence is a wilted, deformed leaf. A light infestation is not serious. A heavy infestation can stunt a tree.

Management

 Twigs with galls should be cut off and burned before larvae make their exit holes.



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