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