• Pest is introduced

• Plants for planting (except seeds bulbs and tubers)
• Hitchhiking

• Plants for planting (except seeds bulbs and tubers)
• Cut flowers or branches
• Non-squared wood
• Hitchhiking

× Likelihood For "Pest is Introduced" the lowest value of Entry or Establishment, as both are required for a successful introduction. For "Pest Spreads to Maximum Extent" this is an expert judgement on the likelihood of this occurrence. See Guidance Document for more Information Close Likelihood [1 - 5]			3
× Spread The rate at which a pest can expand, by natural dispersal only, within an area. See Guidance Document for more Information Close Spread [1 - 5]				4
× Impact The highest value from economic, environmental or social impacts. See Guidance Document for more Information Close Impact [1 - 5]		2
× Value at Risk The value of the hosts or industries at risk from this pest in the UK. See Guidance Document for more Information Close Value at Risk [1 - 5]					5
× Likelihood x Impact The likelihood multiplied by the impact, which shows the risk to the sector. See Guidance Document for more Information Close Likelihood x Impact [1 - 25]	6
× UK Relative Risk Rating Likelihood x Impact x Value at Risk. See Guidance Document for more Information Close UK Relative Risk Rating [1 - 125]	30

Key mitigation for pest

Provisional quarantine pest (Great Britain).

Regulation

Surveillance

Industry Scheme

Contingency Plan

Awareness

Research

× Likelihood For "Pest is Introduced" the lowest value of Entry or Establishment, as both are required for a successful introduction. For "Pest Spreads to Maximum Extent" this is an expert judgement on the likelihood of this occurrence. See Guidance Document for more Information Close Likelihood [1 - 5]			3
× Spread The rate at which a pest can expand, by natural dispersal only, within an area. See Guidance Document for more Information Close Spread [1 - 5]				4
× Impact The highest value from economic, environmental or social impacts. See Guidance Document for more Information Close Impact [1 - 5]		2
× Value at Risk The value of the hosts or industries at risk from this pest in the UK. See Guidance Document for more Information Close Value at Risk [1 - 5]					5
× Likelihood x Impact The likelihood multiplied by the impact, which shows the risk to the sector. See Guidance Document for more Information Close Likelihood x Impact [1 - 25]	6
× UK Relative Risk Rating Likelihood x Impact x Value at Risk. See Guidance Document for more Information Close UK Relative Risk Rating [1 - 125]	30

Regulation

Deregulation

Management By Industry

Targeted Survey

PRA

Contingency Plan

Publicity

Research

Country / Territory			Status			Notes
Europe
	United Kingdom		Absent
Asia
	Bangladesh		Present
	China		Present
	India		Present
	Nepal		Present
	Japan		Present
	North Korea		Present
	South Korea		Present
	Myanmar		Present
	Pakistan		Present
	Sri Lanka		Present
	Thailand		Present
	Taiwan		Present
	Vietnam		Present
	Russia		Present

• Insect (Lepidoptera)

Broadleaved trees

• Betula L.
• Castanea Mill.
• Fagus L.
• Juglans mandshurica Maxim.
• Juglans
• Malus mandshurica (Maxim.) Kom. ex Juz
• Malus domestica Borkhausen
• Quercus L.
• Quercus dentata Thunb.
• Quercus mongolica Fisch. Ex Turcz./Fisch. Ex Ledeb.
• Salix L.
• Tilia L.
• Ulmus L.

• Broadleaved

PRA Availability

PRA not available

Provisional quarantine pest (Great Britain). EPPO A2

Action

Statutory action against findings

General Comments

Polyphagous moth pest native to south and east Asia. Represents a potential threat to UK broadleaved species and action would be taken in response to any interceptions.

Key uncertainty for pest

Damage in northerly locations of current range

Climate

Current distribution

Hosts

Impact

Pathways

Regulation

Taxonomy

UK distribution