Pear moth

Systematic position: The pear moth (Cosmia pyralina) belongs to the order Lepidoptera and the family Noctuidae. It is a well-known pest in horticultural areas across Europe and parts of Asia, frequently found in orchards where it utilizes deciduous trees as hosts.

Host plants: The primary host plants for this species are members of the Rosaceae family. It is most notorious for damaging pear (Pyrus) and apple (Malus) trees. While it prefers specific fruit-bearing species, it can occasionally thrive on wild woody plants within the same botanical family.

Biology and life cycle: The insect overwinters in the egg stage, which is usually deposited on the bark of twigs near the buds. As the buds swell and break in the spring, the larvae hatch and immediately begin feeding. Pupation typically occurs in the soil or within crevices on the tree bark, with adult moths emerging in mid-summer.

Type of damage: Larvae are highly damaging during the early spring vegetative stage. They tunnel into the developing buds, destroying them from the inside. As the season progresses, they shift to feeding on foliage and young fruits. A high population density can result in severe foliage loss and a significant reduction in fruit set.

Control measures: Management of Cosmia pyralina requires integrated pest management strategies:

• Regular inspection of buds and twigs during early spring.
• Application of selective insecticides targeting the larval stage during the bud-burst phase.
• Use of sticky traps or pheromone baits to disrupt mating and monitor flight activity.
• Good orchard hygiene, including the removal of debris where larvae might pupate.