UK Risk Register Details for Cydalima perspectalis

This record was last updated on 18/03/2021

Common Names

  • box tree caterpillar
  • box tree pyralid

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest spreads to maximum extent

Pathway Assessed for Entry to UK

  • show / hide

Common Pathways

  • show / hide
This section is currently being developed as part of the next phase of the Risk Register.

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 4
Spread [1 - 5] 3
Impact [1 - 5] 4
Value at Risk [1 - 5] 1
Likelihood x Impact [1 - 25] 16
UK Relative Risk Rating [1 - 125] 16

Current Mitigations

  • show / hide

Key mitigation for pest



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 4
Spread [1 - 5] 3
Impact [1 - 5] 4
Value at Risk [1 - 5] 1
Likelihood x Impact [1 - 25] 16
UK Relative Risk Rating [1 - 125] 16

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
Albania Present
Guernsey Present
Ireland Present
Lithuania Present
Luxembourg Present
Republic of North Macedonia Present
Moldova Present
Portugal Present
Montenegro Present
Bulgaria Present
Serbia Present
Romania Present
Russia Present
Croatia Present
Liechtenstein Present
Turkey Present
Poland Present
United Kingdom Present (Limited)
Greece Present
Bosnia-Herzegovina Present
Ukraine Present
Spain Present
Belarus Present Present, few occurrences.
Austria Present
Belgium Present
Czech Republic Present
France Present
Germany Present
Hungary Present
Italy Present
Netherlands Present
Slovenia Present
North America
Canada Present Under containment
Georgia Present
China Present
Japan Present
South Korea Present

Type of Pest

  • Insect (Lepidoptera)

Host or Industry at Risk

  • show / hide


Major Hosts

  • Buxus L.
  • Buxus balearica Lam.
  • Buxus microphylla Sieb. & Zucc.
  • Buxus sempervirens var. sempervirens L.

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

Further Information

PRA Availability

UK (2010)

Regulation and EPPO listing

  • show / hide

Not currently listed

Actions Indicated

  • show / hide


No statutory action against findings.

General Comments

Asian moth pest of Buxus, now established in Europe including the UK. Stakeholder organisations may be interested in monitoring spread and damage and investigate possible control measures.

Risk Records for this Pest