Thrips
often found on the undersides of leaves, where they feed on plant sap. Damage: Thrips can cause damage to leaves, flowers, and fruits by feeding on plant tissue [...] adults feed on all aerial parts of the plant and are fairly mobile. Immediately after hatching, the larvae begin to feed on plant tissue on the underside [...] variety of colors, depending on the species. Most of them are brown or black. Some species may have distinctive markings or stripes on their bodies or wings.