Pest categorisation of Coccus viridis

Area of Science:

• Plant Health
• Entomology
• Pest Risk Assessment

Background:

• Coccus viridis, the green coffee scale, is a polyphagous pest found in tropical/subtropical regions.
• It has been identified as a pest of potential concern for the European Union (EU).
• The pest is already present in the Azores and Madeira Islands within the EU.

Purpose of the Study:

• To perform a pest categorisation of Coccus viridis for the EU.
• To assess the risk posed by Coccus viridis, particularly in relation to commodity risk assessments.
• To determine if Coccus viridis meets the criteria for a potential quarantine pest in the EU.

Main Methods:

• Pest categorisation following established EU guidelines.
• Review of distribution, host range, and pathways for entry into the EU.
• Assessment of potential for establishment and spread within the EU, considering climatic conditions and host availability.

Main Results:

• Coccus viridis has a wide host range, including plants grown in the EU.
• Potential pathways for entry include plants for planting, fruits, vegetables, and cut flowers.
• Establishment is possible in southern/central EU, especially in greenhouses, but outdoor establishment in central EU has uncertainties.
• Economic impact is likely but the magnitude is uncertain.

Conclusions:

• Coccus viridis meets all criteria for consideration as a potential quarantine pest in the EU.
• Phytosanitary measures are available to reduce the risk of introduction and spread.
• Further research on pest-specific temperature requirements may reduce uncertainty regarding establishment.