Covered with many very short hairs, giving the appearance of velvet. A full grown caterpillar may be 50 mm in length. The adults are day-flying butterflies. Plutellidae - the caterpillars of plutellids or diamondback moths. Usually external leaf feeders that may loosely tie leaves together, occurring primarily on broadleaf plants.
Body color is often a shade of yellow to green.
Generally small, rarely exceeding a full grown length of 15 mm. See Ypsolopha cervella . The adults are night-flying moths. Pyralidae - the caterpillars of snout moths. Typically borers in plant stems and fruits, occurring on conifers, broadleaf plants, and in nests of other insects.