Notaris weevil

Systematic position: The pest belongs to the order Coleoptera, family Curculionidae (true weevils). The genus Notaris comprises specialized beetle species that are primarily associated with aquatic and semi-aquatic plants, particularly those belonging to the Cyperaceae family, though they can occasionally impact managed landscapes.

Crops damaged: The host range mainly includes various species of sedge (Carex), cattails, and other hygrophilous plants. In an agronomic setting, this pest poses a risk to plants grown in moist soil conditions, irrigation areas, or near natural bodies of water where suitable host plants provide a year-round habitat for adult beetles and larvae.

Biology and life cycle: The life cycle is typical for the Curculionidae family. Adults emerge from overwintering sites in the spring as temperatures rise. Females oviposit directly into the tissues of stems or inflorescences. The larvae develop inside the plant tissues, feeding on internal parts, and pupation occurs within the plant structure as well.

Character of damage and harmfulness: Larvae cause damage to generative organs and stems, leading to stunted growth, shoot deformation, and reduced plant vigor. In cases of high infestation, the pest can significantly reduce the density of plant stands, which is particularly problematic in nurseries dedicated to propagating aquatic or ornamental moisture-loving species.

Control measures: Management requires an integrated approach. Cultural control is vital, involving the removal of weed hosts, such as sedges, in the vicinity of production fields to eliminate breeding grounds. During periods of high adult activity, contact-stomach insecticides may be applied, ensuring strict adherence to environmental regulations regarding the protection of water sources.