Caladonus

Systematic position: Caladonus (lat. Caladonus) belongs to the order Coleoptera, family Curculionidae (weevils). This genus of insects is characterized by a specific structure of the rostrum and unique larval development patterns, which are closely linked to the tissues of their host plants.

Host crops: This pest shows trophic specialization on various herbaceous plants and certain shrubs. The main damage is caused to crops of grains, legumes, and various wild plants belonging to families on which the insect completes its full life cycle.

Biology and life cycle: The life cycle of Caladonus includes complete metamorphosis: egg, larva, pupa, and imago. Females lay eggs inside plant tissues or in the soil layer near the roots. Larvae pass through several instars, actively feeding on internal stem tissues or roots, after which they pupate in protected chambers.

Nature of damage and harmfulness: Adults eat leaves, creating irregular holes, while larvae damage the plant's vascular system by feeding on the roots or the stem pith. This leads to stunted growth, weakened plant immunity, and, in cases of mass outbreak, crop lodging and significant yield loss.

Protection measures: Controlling Caladonus requires an integrated approach including agronomic and chemical methods. It is essential to practice crop rotation, perform deep autumn plowing to destroy pupae, and apply systemic insecticides during the growing season if the pest population exceeds the economic threshold.