Childers canegrub

Antitrogus parvulus

Overview:

Antitrogus parvulus, the Strawberry Blossom Weevil, is a weevil species that targets strawberry plants. Weevils, in general, are characterized by their elongated snouts and are known for feeding on plant tissues.

Detailed Appearance:

The adult Strawberry Blossom Weevil is a small beetle, measuring around 2 to 3 millimeters in length. It has a distinctive elongated body, a curved snout, and a reddish-brown to dark-brown coloration. The larvae are legless grubs, typically found within the blossoms or developing fruit.

Life Cycle:

The life cycle of Antitrogus parvulus includes four stages: egg, larva, pupa, and adult. Adult weevils emerge in the spring and feed on strawberry blossoms. Females lay eggs within the blossoms, and the larvae develop within the floral tissues. After completing their larval stage, they pupate within the blossoms or in the soil. Adult weevils emerge from pupae to continue the cycle.

Identifying Infected Crops:

  1. Blossom Damage: Look for feeding damage on strawberry blossoms, including notches and holes caused by adult weevils.

  2. Misshapen or Damaged Fruit: Larval feeding within developing fruit can result in misshapen or damaged strawberries.

  3. Weevil Presence: Actively inspect strawberry plants for the presence of adult weevils, especially during the flowering period.

Management:

  1. Cultural Practices: Implement good cultural practices, such as proper sanitation, to remove and destroy damaged or infested blossoms. This can help reduce weevil populations.

  2. Biological Control: Encourage natural predators and parasitoids that target weevils. Predatory insects and spiders may contribute to controlling weevil populations.

  3. Neem Oil: Neem oil, a natural insecticide, can be applied to strawberry plants to deter adult weevils. Follow the manufacturer's instructions for application.

  4. Insecticide Applications: In severe infestations, insecticides labeled for weevil control may be used. Follow recommended application rates and timing, considering the impact on beneficial insects.

  5. Trap Crops: Consider planting trap crops to attract and concentrate weevils away from the main strawberry crop. These trap crops can be treated or removed to manage weevil populations.