Pear sucker

The pear sucker (Cacopsylla bidens) is an insect pest belonging to the order Hemiptera and the family Psyllidae. It is recognized as a significant threat to pear orchards, capable of causing serious damage to plant vigor and fruit production if left unmanaged.

This pest is highly host-specific, feeding primarily on pear trees. The insects prefer young foliage, developing buds, and tender shoots, where they pierce the plant tissue to extract sap. This feeding activity leads to stunted growth, reduced tree vitality, and significant physiological stress.

The life cycle consists of the egg stage, five nymphal instars, and the adult stage. Adult psyllids overwinter in protected areas such as tree bark crevices or leaf litter. As spring temperatures rise, they emerge, move to the buds, and initiate the first generation of the season.

Damage is characterized by leaf curling and yellowing. A distinctive symptom is the secretion of honeydew, a sticky substance produced by the nymphs. This residue promotes the growth of sooty mold, which coats the leaves and fruit, hindering photosynthesis and drastically reducing the market value of the crop.

Integrated pest management is essential for controlling this species. Farmers should focus on early-season monitoring and the application of targeted insecticides during the nymphal stages. Additionally, preserving populations of natural predators like lacewings and ladybirds, along with orchard hygiene practices, plays a vital role in maintaining low infestation levels.