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UK Risk Register Details for Spodoptera ornithogalli

This record was last updated on 30/10/2023

Common Names

  • yellow stripe armyworm
  • Yellow-striped Armyworm

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Fruits or vegetables

Common Pathways

  • show / hide
  • Cut flowers or branches
  • Fruits or vegetables
  • Stored plant products

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 3
Spread [1 - 5] 5
Impact [1 - 5] 3
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 9
UK Relative Risk Rating [1 - 125] 45

Current Mitigations

  • show / hide

Key mitigation for pest

Regulated pest pending further assessment (Northern Ireland). Prohibitions on some hosts, but other pathways remain open



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 3
Spread [1 - 5] 5
Impact [1 - 5] 3
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 9
UK Relative Risk Rating [1 - 125] 45

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
United Kingdom Absent
North America
Mexico Present
United States Present
Central America
Antigua and Barbuda Present
Bahamas Present
British Virgin Islands Present
Costa Rica Present
Dominica Present
Dominican Republic Present
Grenada Present
Guatemala Present
Haiti Present
Honduras Present
Jamaica Present
Puerto Rico Present
Saint Kitts and Nevis Present
Saint Lucia Present

Type of Pest

  • Insect (Lepidoptera)

Host or Industry at Risk

  • show / hide

tomatoes, peppers, potatoes

Major Hosts

  • Allium L.
  • Arachis hypogaea L.
  • Capsicum annuum L.
  • Glycine max (L.) Merr.
  • Gossypium L.
  • Ipomoea batatas (L.) Poir./Lam.
  • Solanum lycopersicum L.
  • Manihot esculenta Crantz
  • Oryza sativa L.
  • Phaseolus vulgaris L.
  • Pisum sativum Linnaeus
  • Solanum tuberosum L.
  • Zea mays L.
  • Brassicaceae (family)

Threats to Protected Cultivation

  • Both protected crops and outdoor production

Forest Tree Pests and Pathogens

  • N/A

Further Information

PRA Availability

PRA not available

Regulation and EPPO listing

  • show / hide

Regulated pest pending further assessment (Northern Ireland); EPPO A1

Actions Indicated

  • show / hide


Statutory action against interceptions and outbreaks

General Comments

Highly polyphagous North American moth. Uncertainties surround the pest’s ability to establish in the UK climate, but if it could build up to population levels seen in the USA, significant UK impacts could be seen. A PRA will help to better assess the level of threat to the UK.

Further Information


  • show / hide

Key uncertainty for pest

Climatic suitability of the UK


Current distribution






UK distribution

Risk Records for this Pest