Blueberry aphid

The blueberry aphid (Pachypappa myrtilli) belongs to the order Hemiptera and the family Aphididae. It is a specialized pest closely associated with plants of the Ericaceae family, particularly blueberries and bilberries, causing significant damage to their vegetative parts.

The primary crops affected by this pest are members of the genus Vaccinium. The aphid forms colonies on shoots and leaves, extracting cellular sap, which leads to the depletion of the plant. Young plantations and wild blueberry thickets in forest and garden areas are most severely impacted.

The biology of the species is characterized by a complex life cycle, involving alternating generations and sometimes the rotation of host plants. Aphids undergo several larval stages, reproducing actively during periods of warm and humid weather. Typically, the eggs overwinter in bark crevices or bud axils, giving rise to founding populations in the spring.

Damage symptoms include leaf deformation, curling, and premature yellowing. Necrotic spots form at the sites of tissue puncture, which reduces the photosynthetic activity of the bush. Heavy infestation leads to stunted shoot growth, reduced berry yields, and weakened overall plant vigor before the onset of winter.

For effective plant protection, a comprehensive approach is recommended. The necessary measures include:

• Application of systemic insecticides in early spring before bud burst.
• Regular monitoring of bushes during the active growing season to detect initial colonies.
• Encouraging natural predators of aphids, such as ladybugs and lacewings, in the garden.
• Timely sanitary pruning and removal of heavily infested shoots to minimize the pest population.