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UK Risk Register Details for Diabrotica significata

Pest has been archived

This pest has been assessed for the Risk Register and is considered to pose a low risk to the UK. The information on this pest was correct as of 16/07/2020, but is no longer actively maintained. It will only be updated if new information is received which indicates the potential for a significant increase in risk to the UK.

This record was last updated on 16/07/2020

Common Names

  • 3-spotted leaf beetle

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
  • Plants for planting (except seeds bulbs and tubers)
  • Cut flowers or branches
  • Fruits or vegetables
  • Soil/growing medium

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 3
Impact [1 - 5] 2
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 4
UK Relative Risk Rating [1 - 125] 20

Current Mitigations

  • show / hide

Key mitigation for pest



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 3
Impact [1 - 5] 2
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 4
UK Relative Risk Rating [1 - 125] 20

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
United Kingdom Absent
South America
Brazil Present
Argentina Present
Paraguay Present

Type of Pest

  • Insect (Coleoptera)

Host or Industry at Risk

  • show / hide

Total outdoor production

Major Hosts

  • Amaranthus hybridus Linnaeus
  • Amaranthus quitensis H.B.K.
  • Arachis hypogaea L.
  • Baccharis articulata (Lam.) Pers.
  • Carica papaya L.
  • Cayaponia S.Manso
  • Chrysanthemum L.
  • Citrullus lanatus (Thunb.) Matsum. & Nakai
  • Cucumis sativus L.
  • Cucurbita maxima Duch.
  • Cucurbita moschata Duch. Ex Poir.
  • Cucurbita pepo L.
  • Cucurbitaceae
  • Cynara cardunculus L.
  • Dahlia pinnata Cav.
  • Datura arborea L.
  • Dianthus caryophyllus L.
  • Fragaria L.
  • Glycine max (L.) Merr.
  • Helianthus annuus L.
  • Indigofera hirsuta L.
  • Malus Mill.
  • Matricaria chamomilla L.
  • Medicago sativa L.
  • Nicotiana tabacum L.
  • Oryza sativa L.
  • Phaseolus coccineus L.
  • Phaseolus lunatus L.
  • Phaseolus vulgaris L.
  • Prunus persica Batsch
  • Raphanus sativus Linnaeus
  • Solanum bonariense L.
  • Solanum melongena L.
  • Solanum sisymbriifolium Lam.
  • Solanum tuberosum L.
  • Solanum viarum Dunal In Dc.
  • Zea mays L.
  • Citrus
  • Asteraceae (family)
  • Fabaceae (family)
  • Gossypium hirsutum

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

Further Information

PRA Availability

UK (2014)

Regulation and EPPO listing

  • show / hide

Not currently listed

Actions Indicated

  • show / hide


No statutory action against findings

General Comments

Polyphagous leaf beetle pest which damages maize yields in South America, but is unlikely to reach damaging levels if introduced to the UK due to the cooler climate here.