Poplar leafhopper

Idiocerus decimasquartus, known as the poplar leafhopper, belongs to the order Hemiptera and the family Cicadellidae. This species is a specialized pest that maintains a strict association with woody plants, particularly trees of the genus Populus.

The pest primarily infests poplar species. It is particularly dangerous for young plantations, tree nurseries, and urban green spaces, where the insect's activity can cause significant weakening of decorative trees, affecting their growth and structural integrity over time.

The biology of this species includes an overwintering egg stage, usually deposited within the bark tissues of the host tree's twigs. Nymphs emerge in the spring and start feeding, followed by several molting stages until reaching the adult stage, which is active throughout the summer.

The damage caused by these insects consists of sap extraction from the leaves. This results in the formation of chlorotic spots, which eventually coalesce. Heavily infested trees show yellowing foliage, leaf deformation, and premature leaf drop, which impairs the tree's photosynthetic capacity.

• Regular phytosanitary monitoring of poplar stands.
• Removal and destruction of infested branches during the dormant period.
• Targeted application of systemic insecticides upon detection of larvae.
• Enhancing tree health through proper fertilization and irrigation.

Integrated pest management is crucial for controlling Idiocerus decimasquartus. Success relies on early detection of the population during the nymph stages. By implementing these measures, arborists can significantly reduce the pressure of this pest on valuable poplar plantations.