Boxwood leafminers (Monoarthropalpus flavus syn. Monarthropalpus buxi) are orangish gnat like flies that are a major pest of boxwood. Their larvae, which are small worm like maggots, feed inside of boxwood leaves causing blisters and puckering on the backside of the leaf and brown blotching on the upper surface. Premature defoliation of infected leaves occurs. In large numbers they can cause extensive and unsightly damage even … Continue reading Boxwood Leaf Miners