UK Risk Register Details for Spodoptera frugiperda

Common Names

  • Fall armyworm
  • Grass worm

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Plants for planting (except seeds bulbs and tubers)

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] 5
Impact [1 - 5] 3
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

Regulated quarantine pest



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 5
Impact [1 - 5] 3
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
United Kingdom Absent
North America
Antigua and Barbuda Present
Barbados Present
Bermuda Present
Bahamas Present
Belize Present
Canada Present
Costa Rica Present
Cuba Present
Dominica Present
Dominican Republic Present
Grenada Present
Guadeloupe Present
Guatemala Present
Honduras Present
Haiti Present
Jamaica Present
Saint Kitts and Nevis Present
Cayman Islands Present
Saint Lucia Present
Martinique Present
Mexico Present
Nicaragua Present
Panama Present
Puerto Rico Present
El Salvador Present
Trinidad and Tobago Present
United States Present
Saint Vincent and the Grenadines Present
British Virgin Islands Present
South America Present
Argentina Present
Bolivia Present
Brazil Present
Chile Present
Colombia Present
Ecuador Present
French Guiana Present
Guyana Present
Peru Present
Paraguay Present
Suriname Present
Uruguay Present
Venezuela Present
Angola Present
Burkina Faso Present
Burundi Present
Benin Present
Botswana Present
Congo (Democratic Rep.) Present
Central African Republic Present
Congo (Brazzaville) Present
Cote d'Ivoire Present
Cameroon Present
Cape Verde Present
Egypt Present
Ethiopia Present
Gabon Present
Ghana Present
Gambia Present
Guinea Present
Guinea-Bissau Present
Kenya Present
Liberia Present
Madagascar Present
Mali Present
Malawi Present
Mozambique Present
Namibia Present
Niger Present
Nigeria Present
Rwanda Present
Seychelles Present
Sudan Present
Sierra Leone Present
Senegal Present
Somalia Present
South Sudan Present
Sao Tome and Principe Present
Swaziland Present
Chad Present
Togo Present
Tanzania Present
Uganda Present
South Africa Present
Zambia Present
Zimbabwe Present
China Present
India Present
Japan Present (Limited)
South Korea Present
Sri Lanka Present
Myanmar Present
Philippines Present
Thailand Present
Taiwan Present
Vietnam Present
Yemen Present

Type of Pest

  • Insect (Lepidoptera)

Host or Industry at Risk

  • show / hide


Major Hosts

  • Oryza sativa L.
  • Saccharum officinarum L.
  • Sorghum vulgare Pers.
  • Zea mays L.

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

Further Information

PRA Availability

PRA not available

Regulation and EPPO listing

  • show / hide

Regulated quarantine pest. EPPO A1

Actions Indicated

  • show / hide


Statutory action against findings.

General Comments

Regulated North American pest, detected in Africa in 2016 and Asia in 2018, intercepted occasionally in the UK, but no evidence of introduction.

Risk Records for this Pest