Mint aphid

The mint aphid (Ovatus crataegarius) is an insect belonging to the order Hemiptera and the family Aphididae. It is a well-known pest that exhibits a heteroecious life cycle, meaning it migrates between different host plant species to complete its seasonal development.

This aphid primarily targets trees such as hawthorn (Crataegus) and apple trees, while also infesting various mint species (Lamiaceae). This host alternation allows the pest to exploit different ecological niches throughout the growing season.

The life cycle involves overwintering as eggs on the bark of woody hosts. As temperatures rise in spring, fundatrices emerge and establish colonies. Throughout the summer, winged forms migrate to secondary herbaceous hosts before returning to woody plants in autumn to lay overwintering eggs.

The damage caused by Ovatus crataegarius is characterized by leaf curling, chlorosis, and the formation of galls. By feeding on phloem sap, the aphids extract essential nutrients, which stunts plant growth, reduces photosynthetic efficiency, and can significantly decrease crop yield.

• Early season monitoring of foliage and buds.
• Application of selective systemic insecticides.
• Promotion of beneficial insects like lady beetles and lacewings.
• Sanitation practices including weed management in orchards.

Management of the mint aphid requires a comprehensive approach. Because the aphids are protected by curled leaves, control measures are most effective when applied at the early stages of infestation. Integrated pest management (IPM) strategies focusing on population thresholds remain the industry standard.