• Pest is introduced

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

This section is currently being developed as part of the next phase of the Risk Register.

× 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]		2
× Impact The highest value from economic, environmental or social impacts. See Guidance Document for more Information Close Impact [1 - 5]			3
× 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]	9
× UK Relative Risk Rating Likelihood x Impact x Value at Risk. See Guidance Document for more Information Close UK Relative Risk Rating [1 - 125]	45

Key mitigation for pest

Prohibition of key hosts, 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]		2
× Impact The highest value from economic, environmental or social impacts. See Guidance Document for more Information Close Impact [1 - 5]			3
× 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]	9
× UK Relative Risk Rating Likelihood x Impact x Value at Risk. See Guidance Document for more Information Close UK Relative Risk Rating [1 - 125]	45

Regulation

Deregulation

Management By Industry

Targeted Survey

PRA

Contingency Plan

Publicity

Research

Country			Status			Notes
Europe
	United Kingdom		Absent
Asia
	North Korea		Present
	South Korea		Present
	Japan		Present
	China		Present
	Russia		Present (Limited)			Far East
	Taiwan		Present
	Vietnam		Present

• Insect (Coleoptera)

Quercus

• Castanea Mill.
• Castanea crenata Sieb. & Zucc.
• Castanea henryi (Skan) Rehd. & Wils.
• Castanea mollissima Blume
• Quercus L.
• Quercus acuta Thunb.
• Quercus acutissima Carruth.
• Quercus aliena Blume
• Quercus dentata Thunb.
• Quercus glauca Thunb.
• Quercus liaotungensis Koidz.
• Quercus mongolica Fisch. Ex Turcz./Fisch. Ex Ledeb.
• Quercus variabilis Blume

• Broadleaved

PRA Availability

EPPO (2018) as Massicus raddei

Provisional quarantine pest (Great Britain). EPPO A1

Action

Statutory action against interceptions and outbreaks.

General Comments

Longhorn beetle affecting mainly oak species in North-East Asia, with the potential to be introduced to the UK via trees for planting (including bonsais) or firewood. Host susceptibility of European species of oak and sweet chestnut should continue to be monitored through existing sentinel trees projects.

Key uncertainty for pest

Whether European host species are vulnerable.

Climate

Current distribution

Hosts

Impact

Pathways

Regulation

Taxonomy

UK distribution