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UK Risk Register Details for Liriomyza trifolii

This record was last updated on 07/01/2021

Common Names

  • American serpentine leaf miner
  • broad bean leaf miner
  • Californian leaf miner
  • Celery leaf miner
  • Chrysanthemum leaf miner

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Cut flowers or branches

Common Pathways

  • show / hide
  • Plants for planting (except seeds bulbs and tubers)
  • Cut flowers or branches
  • Fruits or vegetables

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 3
Spread [1 - 5] 2
Impact [1 - 5] 3
Value at Risk [1 - 5] 4
Likelihood x Impact [1 - 25] 9
UK Relative Risk Rating [1 - 125] 36

Current Mitigations

  • show / hide

Key mitigation for pest

Regulated quarantine pest (Great Britain, Northern Ireland may differ)



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 2
Impact [1 - 5] 3
Value at Risk [1 - 5] 4
Likelihood x Impact [1 - 25] 6
UK Relative Risk Rating [1 - 125] 24

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
Europe Present
Bosnia-Herzegovina Present
Russia Present
Serbia Present
Spain Present
Switzerland Present
Turkey Present
United Kingdom Absent
Austria Present
Belgium Present
Croatia Present
Cyprus Present
Finland Present
France Present
Greece Present
Italy Present
Malta Present
Netherlands Present
Portugal Present
Romania Present
Slovenia Present
North America
Canada Present
Mexico Present
United States Present
South America
Brazil Present
Chile Present
Colombia Present
Ecuador Present
French Guiana Present
Guyana Present
Peru Present
Venezuela Present
Micronesia Present
Samoa Present
Tonga Present
Africa Present
Benin Present
Cote d'Ivoire Present
Egypt Present
Ethiopia Present
Guinea Present
Kenya Present
Madagascar Present
Mauritius Present
Mayotte Present
Morocco Present
Nigeria Present
Reunion Present
Senegal Present
South Africa Present
Sudan Present
Tanzania Present
Tunisia Present
Zambia Present
Zimbabwe Present
Asia Present
China Present
India Present
Iran Present
Israel Present
Japan Present
South Korea Present
Lebanon Present
Oman Present
Saudi Arabia Present
Philippines Present
Taiwan Present
United Arab Emirates Present
Yemen Present
Vietnam Present
Central America
Bahamas Present
Barbados Present
Bermuda Present
Costa Rica Present
Cuba Present
Dominican Republic Present
Guadeloupe Present
Guatemala Present
Martinique Present
Antigua and Barbuda Present
Puerto Rico Present
Saint Kitts and Nevis Present
Trinidad and Tobago Present
British Virgin Islands Present

Type of Pest

  • Insect (Diptera)

Host or Industry at Risk

  • show / hide

Total protected cultivation

Major Hosts

  • Abelmoschus esculentus (L.) Moench
  • Allium cepa L.
  • Allium porrum L.
  • Allium sativum L.
  • Apium graveolens L.
  • Arachis hypogaea L.
  • Aster L.
  • Beta vulgaris L.
  • Brassica L.
  • Brassica chinensis L.
  • Callistephus Cass.
  • Capsicum annuum L.
  • Chrysanthemum L.
  • Citrullus lanatus (Thunb.) Matsum. & Nakai
  • Cucumis L.
  • Cucumis melo L.
  • Cucumis sativus L.
  • Cucurbita pepo L.
  • Cucurbitaceae
  • Dahlia Cav.
  • Dahlia hybrids
  • Chrysanthemum x morifolium Ramat.
  • Dianthus L.
  • Dianthus caryophyllus L.
  • Gaillardia Foug.
  • Gerbera L. Ex Cass. Corr. Spreng.
  • Gerbera jamesonii H.Bolus Ex Hook.F.
  • Glycine max (L.) Merr.
  • Gossypium L.
  • Gypsophila L.
  • Gypsophila paniculata L.
  • Helianthus L.
  • Lactuca sativa L.
  • Lathyrus L.
  • Solanum lycopersicum L.
  • Medicago sativa L.
  • Pericallis x hybrida R.Nordenstam
  • Phaseolus coccineus L.
  • Phaseolus lunatus L.
  • Phaseolus vulgaris L.
  • Pisum sativum Linnaeus
  • Salvia L.
  • Solanum tuberosum L.
  • Spinacia oleracea L.
  • Tagetes L.
  • Trifolium L.
  • Tropaeolum L.
  • Vigna Savi
  • Zinnia L.
  • Asteraceae (family)
  • Gossypium hirsutum

Threats to Protected Cultivation

  • Only protected crops

Forest Tree Pests and Pathogens

Further Information

PRA Availability

PRA not available

Regulation and EPPO listing

  • show / hide

Regulated quarantine pest (Great Britain, Northern Ireland may differ). EPPO A2

Actions Indicated

  • show / hide


Statutory action against findings

General Comments

Regulated polyphagous leafmining fly pest. Often intercepted on various host plants.

Risk Records for this Pest