Lace bugs (Tungidae)

The host range of lace bugs is extensive, encompassing deciduous trees, various shrubs, and several ornamental plant species. They are particularly problematic for fruit-bearing trees such as apples and pears, as well as plants grown in greenhouses and nurseries. Their presence is often detected by the stippling effect on the foliage.

The life cycle of these pests consists of eggs, nymphs, and adults. Adults typically overwinter in protected areas such as leaf litter, soil crevices, or under tree bark. As temperatures rise in spring, they migrate to the foliage to lay eggs on the underside of leaves, allowing them to complete multiple generations throughout the growing season.

Damage caused by lace bugs manifests as distinct chlorotic spotting on the upper leaf surface, resulting from the extraction of plant cell contents.

• Leaves appear bleached, stippled, or yellowed.
• Dark, sticky fecal spots are frequently visible on the undersides of leaves.
• Severe infestations lead to premature leaf drop and weakened plant vigor.

Effective management requires a combination of sanitation and chemical intervention. Removing and destroying infested plant debris during the dormant season reduces the overwintering population. During the growing season, applications of systemic or contact insecticides, as well as horticultural oils or insecticidal soaps, are recommended when active nymphs are present.