Flat mite

Systematic position. The genus Cenopalpus belongs to the family Tenuipalpidae, commonly known as flat mites. These tiny arthropods are significant agricultural pests that affect a wide range of woody hosts, particularly in temperate and Mediterranean climate zones.

Host plants. These mites are known for their polyphagous nature. They frequently infest fruit trees including apple, pear, peach, and quince. Furthermore, they are often found on grapevines and various coniferous trees, potentially causing severe damage to ornamental and forest plantations.

Biology and life cycle. The life cycle comprises the egg, larva, protonymph, deutonymph, and adult stages. Overwintering occurs primarily as fertilized females hiding under bark scales or near buds. Several generations can occur per season, with hot and dry weather conditions accelerating their development and population growth.

Nature of damage and harmfulness. Feeding by Cenopalpus mites involves piercing the plant tissue and extracting cell contents, primarily on the underside of leaves and on young stems. This feeding activity results in chlorotic stippling, leaf yellowing, and eventually premature defoliation, which severely stresses the tree and reduces yields.

• Monitor orchards during the spring and summer for signs of stippling on leaves.
• Utilize predatory mites and other natural enemies to manage population levels.
• Apply specific acaricides when pest density exceeds the economic injury level.
• Maintain tree health through proper pruning and bark maintenance to reduce overwintering sites.