White-toothed short-nosed weevil

Brachycerus albidentatus belongs to the order Coleoptera and the family Curculionidae (true weevils). This is a specialized pest that maintains a cryptic lifestyle and poses a significant threat to various plants within the Amaryllidaceae and Alliaceae families.

This pest primarily infests bulbous crops, including both wild and cultivated species of onion, garlic, and snowdrops. In its native range, it can cause substantial yield losses by consuming the internal tissues of bulbs, which inevitably leads to the weakening and eventual death of the entire plant.

The biology of the species is characterized by the emergence of adults in the spring, which then begin feeding on the vegetative parts of host plants. Females lay eggs directly into the bulb tissues or in the soil nearby. Larval development occurs inside the bulb, where they feed on succulent scales, creating tunnels that facilitate secondary infections.

Damage symptoms include leaf wilting, stem deformation, and root system decay. Under heavy infestation, the bulb is completely destroyed from the inside, rendering it useless for storage or further vegetative growth. The level of damage tends to increase during years with weather conditions favorable to the beetle's development.

Control measures primarily involve strict crop rotation, as the pest often persists in the soil in areas where bulbous crops are grown repeatedly. Recommended management practices include:

• Rigorous culling of infested planting material
• Deep autumn plowing to eliminate overwintering adults
• Targeted application of authorized insecticides during the peak adult activity period