• Pest is introduced

• Plants for planting (except seeds bulbs and tubers)

• Plants for planting (except seeds bulbs and tubers)
• Non-squared wood
• Squared wood
• Bark

× 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]				4
× 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]			3
× 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]	12
× UK Relative Risk Rating Likelihood x Impact x Value at Risk. See Guidance Document for more Information Close UK Relative Risk Rating [1 - 125]	36

Key mitigation for pest

Regulation/prohibition of some hosts; regulated 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]				4
× 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]			3
× 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]	12
× UK Relative Risk Rating Likelihood x Impact x Value at Risk. See Guidance Document for more Information Close UK Relative Risk Rating [1 - 125]	36

Regulation

Deregulation

Management By Industry

Targeted Survey

PRA

Contingency Plan

Publicity

Research

Country / Territory			Status			Notes
Europe
	United Kingdom		Absent
Oceania
	New Zealand		Present

• Insect (Coleoptera)

Foresty Timber

• Acer pseudoplatanus L.
• Agathis australis Hort. Ex Lindl./(D.Don) Salisb.
• Brachyglottis J.R. & G. Forst.
• Castanea sativa Mill.
• Cordyline australis (Forster F.) Hooker F./Endlicher
• Dacrydium cupressinum Soland. Ex Lamb.
• Elaeocarpus L.
• Nothofagus Blume
• Nothofagus fusca (Hook.F.) Oerst.
• Nothofagus menziesii (Hook.F.) Oerst.
• Nothofagus solandrii (Hook.F.) Oerst.
• Pinus L.
• Pseudotsuga menziesii (Mirbel) Franco
• Salix babylonica L.
• Weinmannia racemosa L.F.

• N/A

• Broadleaved & Coniferous

PRA Availability

PRA not available

Regulated quarantine pest (Great Britain) and in specific measures for Northern Ireland

Action

Statutory action on interceptions and outbreaks

General Comments

Ambrosia beetle limited to New Zealand which tunnels through the sapwood of live and felled tree hosts causing reductions in timber quality. The beetle also introduces a pathogen which can cause mortality in living hosts.

Key uncertainty for pest

Host range and whether the pest can complete its lifecycle within certain hosts.

Climate

Current distribution

Hosts

Impact

Pathways

Regulation

Taxonomy

UK distribution