Pest categorisation of Setoptus parviflorae

Area of Science:

• Plant Health
• Entomology
• Phytosanitation

Background:

• Setoptus parviflorae (Acari: Eriophyoidea: Phytoptidae) is an eriophyoid mite identified in Nanjing Botanical Garden, China, exclusively on Pinus parviflora.
• This mite's life cycle and specific ecological requirements remain largely uncharacterized.
• The primary entry pathway into the European Union (EU) is through plants for planting of P. parviflora, although most Pinus imports are restricted.

Purpose of the Study:

• To conduct a pest categorization of Setoptus parviflorae for the European Union.
• To assess the potential risk and suitability of S. parviflorae as a Union quarantine pest.

Main Methods:

• Review of existing literature and data on S. parviflorae distribution, host association, and biology.
• Assessment of potential introduction pathways and establishment risks within the EU.
• Evaluation against criteria for Union quarantine pest status as defined by EFSA.

Main Results:

• Setoptus parviflorae is currently known only from P. parviflora in Nanjing, China.
• While P. parviflora is cultivated in the EU (e.g., for bonsai), precise climate match for establishment is uncertain.
• No evidence of phytosanitary impact or economic damage caused by S. parviflorae has been documented.

Conclusions:

• Setoptus parviflorae does not currently meet the criteria for a Union quarantine pest due to a lack of evidence of impact.
• Existing EU regulations on Pinus imports limit the primary pathway for introduction.
• Further research on the mite's biology and impact is needed for a comprehensive risk assessment.