Pale brindled beauty

Systematic position: The pale brindled beauty (Lycia pomonaria) belongs to the order Lepidoptera and the family Geometridae. This moth species is recognized as a significant pest in orchards and woodland areas, known for its specific life cycle adaptations that allow it to emerge very early in the season.

Host plants: The insect is a polyphagous pest with a preference for fruit trees. It primarily affects pome and stone fruits, including apple, pear, cherry, and plum trees. Additionally, it can thrive on various shrub species like hawthorn and sallow, making it a persistent inhabitant in areas where agricultural land meets forest edges.

Biology and life cycle: The species produces one generation per year. It overwinters in the pupal stage, burrowing into the soil beneath the host trees. Adults emerge in early spring, often before the buds fully break. A critical feature of this species is the wingless or flightless female, which must climb the tree trunks to lay eggs on the bark crevices and twigs.

Nature of damage: Larvae, known as loopers, emerge in early spring coinciding with the opening of buds. They feed aggressively on young buds, emerging foliage, and blossoms. In cases of high infestation, the larvae can cause complete defoliation of the tree canopy, leading to a total loss of fruit production and significant stress to the host plant.

• Installing sticky tree bands in late winter to trap flightless females climbing the trunks to lay eggs.
• Cultivating the soil in the autumn to disturb and kill the pupae residing underground.
• Applying targeted insecticide sprays during the pre-blossom stage if larval populations are high.
• Encouraging natural predators such as birds and parasitic wasps within the orchard environment.