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UK Risk Register Details for Ips perturbatus

This record was last updated on 19/10/2022

Common Names

  • Northern spruce engraver
  • Spruce bark beetle

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Wood packaging material (with bark)

Common Pathways

  • show / hide
  • Non-squared wood
  • Wood packaging material

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 3
Spread [1 - 5] 4
Impact [1 - 5] 4
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 12
UK Relative Risk Rating [1 - 125] 60

Current Mitigations

  • show / hide

Key mitigation for pest

ISPM 15 on WPM, regulated quarantine pest (as non-European Scolytidae)



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 1
Spread [1 - 5] 4
Impact [1 - 5] 4
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 4
UK Relative Risk Rating [1 - 125] 20

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
United Kingdom Absent
North America
Canada Present
United States Present

Type of Pest

  • Insect (Coleoptera)

Host or Industry at Risk

  • show / hide

Picea sitchensis

Major Hosts

  • Picea glauca (Moench) Voss
  • Picea lutzii (P. x lutzii) Little
  • Picea mariana (Mill.) Britt., Sterns & Poggenb.
  • Picea sitchensis (Bong.) Carr.

Threats to Protected Cultivation

  • N/A

Forest Tree Pests and Pathogens

  • Coniferous

Further Information

PRA Availability

PRA not available

Regulation and EPPO listing

  • show / hide

Regulated quarantine pest (as non-European Scolytidae)

Actions Indicated

  • show / hide


Statutory action in line with the existing regulation of all non-European Scolytidae. Further regulation is not considered appropriate as the main pathways for entry of I. perturbatus are either prohibited or effectively regulated.

General Comments

North American bark beetle which attacks spruce. As with many bark beetles, highest impacts are seen on trees which are already stressed. Existing requirements on wood, wood packaging material, and prohibitions on growing plants mitigate the risk of entry into the UK.

Further Information


  • show / hide

Key uncertainty for pest

Level of impacts seen on hosts of significance to the UK.


Current distribution






UK distribution

Risk Records for this Pest