Black locust lace bug

The Black locust lace bug (Corythucha nocens) is an insect belonging to the order Hemiptera and the family Tingidae. These insects are easily recognized by the intricate, lace-like pattern on their wings and pronotum, which serves as both camouflage and a characteristic diagnostic feature.

The primary host for this pest is the black locust tree (Robinia pseudoacacia). While it may seem like a minor nuisance in low numbers, a significant infestation can cause widespread damage across entire groves, leading to premature leaf drop and the long-term decline of the host plants.

The life cycle of this species consists of several nymphal stages that feed alongside the adults. Eggs are typically laid in clusters on the underside of leaves. As the temperature rises in the spring, the nymphs emerge and begin their sap-feeding process, which continues throughout the summer months.

Damage is characterized by chlorotic spotting on the upper leaf surface, commonly referred to as "stippling." As the infestation progresses, the leaves turn brown and desiccate. The presence of black, varnish-like fecal spots on the underside of the leaves is a definitive sign of an active infestation.

• Implement systemic insecticide applications during the peak nymph stage.
• Monitor tree health frequently during dry and warm seasons.
• Sanitize the area by removing and destroying infested leaf litter.
• Encourage natural predators such as lacewings and ladybeetles in the habitat.
• Apply dormant oils to the bark to reduce the overwintering adult population.