Codling Moth, common name for a species of moth, the larva of which is known as the apple worm. Codling moths have mottled brown wings and are small, with a wingspan of less than 2.5 cm (less than 1 in). They emerge from their cocoons about the time that apple trees blossom in the spring and lay their eggs on the leaves of the trees. When the larvae hatch, they eat a little foliage and then burrow into the fruit, leaving extensive feces-lined tunnels. As many as three consecutive generations may hatch in a single season. At the start of cold weather, the larvae spin inconspicuous cocoons in which they pass the winter. In early spring the larvae spin thinner cocoons on the bark of the trees and enter the pupal stage, from which the moths emerge. Codling moths are common wherever apples are grown. They also attack pears, quinces, and English walnuts. They are controlled by spraying the trees before the caterpillars have entered the fruit. This operation costs millions of dollars annually in the United States.
Scientific classification: The codling moth is classified as Cydia pomonella. It belongs to the family Tortricidae, order Lepidoptera.