Pest categorisation of Tetraleurodes perseae

Area of Science:

• Plant Health
• Entomology
• Pest Risk Analysis

Background:

• Tetraleurodes perseae, the red-banded whitefly, is a tropical/subtropical pest originating from the Neotropics.
• It has established in the USA, Israel, and Lebanon, primarily affecting avocado (Persea americana) as a minor pest.
• T. perseae is not currently listed as a Union quarantine pest in the EU.

Purpose of the Study:

• To conduct a pest categorisation of Tetraleurodes perseae for the EU territory.
• To assess its potential as a Union quarantine pest based on EFSA's criteria.
• To evaluate the risks associated with its introduction and establishment in the EU.

Main Methods:

• Pest categorisation performed by the EFSA Panel on Plant Health.
• Review of existing data on T. perseae biology, host range, distribution, and impact.
• Assessment of potential entry, establishment, and spread pathways within the EU.
• Evaluation of existing control measures and natural enemies.

Main Results:

• T. perseae is oligophagous, mainly on Lauraceae (avocado).
• Larvae feed on foliage; adults can cause leaf damage and promote sooty mould growth.
• Populations are often controlled by hymenopteran parasitoids, including Cales noacki, which is present in the EU.
• Plants for planting represent a significant pathway for introduction and spread.
• Climatic conditions in southern EU are conducive for establishment.

Conclusions:

• T. perseae meets criteria for a potential Union quarantine pest.
• However, high uncertainty exists regarding the magnitude of its potential impact due to its minor and sporadic pest status in current areas.
• Phytosanitary measures can mitigate risks, but occasional outbreaks may affect fruit quality.