Shining weevil

Systematic position: The shining weevil (Rhynchites fulgidus) is a member of the Coleoptera order, belonging to the Rhynchitidae family. It is recognized as a significant pest of orchard ecosystems, known for its specific impact on the development of fruit tree tissues.

Host plants: This pest primarily affects pome and stone fruit crops. Apple, pear, apricot, and plum trees are the most common hosts. The insect causes damage during the early stages of plant growth, targeting developing buds, blossoms, and immature fruits.

Biology and life cycle: The species overwinters as an adult in the soil or under organic debris. With the arrival of spring, adults emerge to feed on succulent buds and shoots. Female weevils lay eggs inside young fruits after partially cutting the stalk, which triggers the fruit to drop to the ground, providing a suitable environment for larval development.

Damage and economic impact: The damage is characterized by distorted growth, loss of buds, and premature fruit fall. Both adults and larvae contribute to yield reduction; larvae feed internally on dropped fruit, which can lead to significant economic losses in commercial fruit production if populations remain uncontrolled.

Control measures: Effective management requires an integrated approach. Cultural practices such as regular collection and disposal of fallen fruit are essential to break the life cycle. When populations exceed threshold levels, systemic or contact insecticides should be applied during the early spring to protect the developing crop.