Lesser apple worm adults are only ¼ inch long and are brownish and yellowish colored.Photo by G. Krawczyk.
Description and life cycle
Adults are only ¼ inch long and are brownish and yellowish colored. When the moth is at rest, a gold band becomes evident across its back. Eggs are white to yellowish and are laid singly on leaves and fruit. Larvae are pinkish, have an anal comb, and reach 3∕8 inch when mature.
Lesser appleworm has two and possibly a partial third generations in Pennsylvania. This insect overwinters as full-grown larvae in a cocoon on the tree, under loose bark scales, or in litter on the ground. The life cycle overlaps closely with codling moth.
Larvae form extensive shallow mines under the fruit skin and may burrow deeper as they mature, although not into the core. Feeding injury in the fall is often limited to the calyx region.
Monitoring and management
Management procedures for codling moth (except codling-moth-only mating disruption) also control this pest. Oriental fruit moth pheromone lures will attract this pest and pheromone mating disruption for Oriental fruit moth will also disrupt lesser appleworm mating.