Pest categorisation of Anthonomus quadrigibbus

Area of Science:

• Plant Health
• Entomology
• Pest Risk Analysis

Background:

• Anthonomus quadrigibbus (Coleoptera: Curculionidae) is a weevil recognized as an occasional pest in North America.
• It damages apples, pears, and sour cherries by feeding on leaves, flowers, and fruit, reducing marketability and yield.
• The pest is not currently known to occur in the European Union (EU).

Purpose of the Study:

• To conduct a pest categorisation of Anthonomus quadrigibbus for the EU.
• To assess the potential risks associated with the introduction and establishment of this pest in the EU.
• To determine if Anthonomus quadrigibbus meets the criteria for a Union quarantine pest.

Main Methods:

• Pest categorisation based on available scientific data and EU pest risk assessment criteria.
• Evaluation of potential introduction pathways, such as host plants for planting and infested fruit.
• Assessment of establishment potential considering climatic similarities and host plant availability in the EU.

Main Results:

• Anthonomus quadrigibbus has the potential to establish in the EU due to climatic similarities and widespread host plants.
• Introduction pathways include host plants for planting and infested fruit.
• The pest could impact apple, pear, and sour cherry orchards, with uncertain levels of damage and potential host range expansion.

Conclusions:

• Anthonomus quadrigibbus meets all criteria for a potential Union quarantine pest.
• Phytosanitary measures are available to reduce the likelihood of introduction.
• The pest is not considered a Union regulated non-quarantine pest as it is not known to occur in the EU.