Also serve as points where disease and decay may start. Not usually a problem unless there are several per leaf. Lady beetles, lacewings. Remove and destroy infested leaves. Root knot Namatodes Tiny, usually microscopic worms.
Plants appear stunted and wilt in hot, dry weather.
Use compost mulch. Large populations develop during hot, dry weather. Suck plant juices from underside of leaves. Leaves appear blotched with pale spots, small specks to large areas. Leaves drop from plants.