Broom bug

The broom bug (Anthocoris sarothamni) is a species of true bug within the family Anthocoridae. While many members of this family are considered beneficial predators, this specific species is known to cause damage to specific legume plants, particularly those in the Cytisus genus.

This pest is primarily associated with shrubby leguminous vegetation. In agricultural landscapes, it can migrate to nursery crops or ornamental gardens, where it pierces plant tissues to extract sap. This activity can cause significant stress to young host plants during the active growing season.

The life cycle of this insect involves overwintering as adults in protected micro-habitats such as bark crevices or leaf litter. Upon the arrival of spring temperatures, they emerge, mate, and deposit eggs into the succulent parts of host plants. The life cycle proceeds through five nymphal instars before reaching maturity.

Damage is typically characterized by stunted growth, leaf curling, and necrotic spotting at feeding sites. The physiological impact on the plant includes a reduction in nutrient flow and increased susceptibility to secondary infections or environmental stress, which can lead to reduced plant vigor.

• Regular field scouting during spring and early summer.
• Pruning and destruction of heavily infested plant material.
• Application of selective insecticides when infestation thresholds are exceeded.
• Maintaining field hygiene to reduce wintering sites.

Effective management requires a proactive approach, focusing on early identification of nymphal clusters. By implementing strict agrotechnical measures and targeted chemical control when necessary, growers can prevent significant yield or ornamental value losses associated with Anthocoris sarothamni outbreaks.