UK Risk Register Details for Lymantria dispar

Common Names

  • Gypsy moth

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] 3
Spread [1 - 5] 2
Impact [1 - 5] 2
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 6
UK Relative Risk Rating [1 - 125] 30

Current Mitigations

  • show / hide

Key mitigation for pest



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 3
Spread [1 - 5] 2
Impact [1 - 5] 2
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 6
UK Relative Risk Rating [1 - 125] 30

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country Status Notes
Austria Present
Belgium Present
Bulgaria Present
Belarus Present
Switzerland Present
Cyprus Present
Czech Republic Present
Germany Present
Denmark Present
Estonia Present
Spain Present
Finland Present
France Present
United Kingdom Present (Limited)
Greece Present
Croatia Present
Hungary Present
Italy Present
Lithuania Present
Moldova Present
Macedonia Present
Netherlands Present
Poland Present
Portugal Present
Romania Present
Serbia Present
Russia Present
Sweden Present
Slovakia Present
Turkey Present
Ukraine Present
North America
Canada Present
United States Present
Algeria Present
Morocco Present
Tunisia Present
Afghanistan Present
Azerbaijan Present
China Present
Israel Present
India Present
Iraq Present
Iran Present
Japan Present
Kyrgyzstan Present
North Korea Present
South Korea Present
Kazakhstan Present
Lebanon Present
Syria Present
Tajikistan Present
Turkmenistan Present
Taiwan Present
Uzbekistan Present

Type of Pest

  • Insect (Lepidoptera)

Host or Industry at Risk

  • show / hide

Broadleaved trees

Major Hosts

  • Acer L.
  • Betula L.
  • Deciduous trees
  • Malus domestica Borkhausen
  • Prunus L.
  • Pyrus pyraster Burgsd.
  • Quercus L.
  • Quercus petraea (Matt.) Liebl.
  • Quercus robur L.
  • Salix L.
  • Ulmus L.
  • Fruit trees

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

  • Broadleaved

Further Information

PRA Availability

PRA not available

EU and EPPO Listing

Not currently listed

Actions Indicated

  • show / hide


No statutory action against findings. Surveillance by stakeholders and other organisations

General Comments

Moth pest established in parts of southern England. Eradication not feasible, but UK climate unlikely to be suitable for populations to reach levels which would result in tree mortality. Stakeholder and other groups may be interested in monitoring spread.

Risk Records for this Pest