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UK Risk Register Details for Aonidiella orientalis

This record was last updated on 07/12/2022

Common Names

  • Oriental scale
  • Oriental yellow scale

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Plants for planting (with soil)

Common Pathways

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

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 1
Impact [1 - 5] 2
Value at Risk [1 - 5] 2
Likelihood x Impact [1 - 25] 4
UK Relative Risk Rating [1 - 125] 8

Current Mitigations

  • show / hide

Key mitigation for pest

Northern Ireland: regulated in the specific measures for import of selected high risk hosts



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 1
Impact [1 - 5] 2
Value at Risk [1 - 5] 2
Likelihood x Impact [1 - 25] 4
UK Relative Risk Rating [1 - 125] 8

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
South America
Brazil Present
Colombia Present
Ecuador Present
French Guiana Present
Australia Present
Nauru Present
Papua New Guinea Present
Angola Present
Benin Present
Cameroon Present
Comoros Present
Egypt Present
Ethiopia Present
Kenya Present
Mali Present
Niger Present
Nigeria Present
Senegal Present
Somalia Present
South Africa Present
Sudan Present
Tanzania Present
Zambia Present
Bangladesh Present
China Present
Hong Kong Present
India Present
Iran Present
Iraq Present
Israel Present
Lebanon Present
Malaysia Present
Maldives Present
Myanmar Present
Nepal Present
Oman Present
Pakistan Present
Philippines Present
Saudi Arabia Present
Sri Lanka Present
Thailand Present
United Arab Emirates Present
Vietnam Present
Central America
Antigua and Barbuda Present
Bahamas Present
Barbados Present
Cuba Present
Dominican Republic Present
Guadeloupe Present
Haiti Present
Jamaica Present
Martinique Present
Panama Present
Puerto Rico Present
Saint Kitts and Nevis Present
Trinidad and Tobago Present

Type of Pest

  • Insect (Hemiptera)

Host or Industry at Risk

  • show / hide

Tropical Glasshouses

Major Hosts

  • Acer L.
  • Areca catechu L.
  • Buxus sempervirens var. sempervirens L.
  • Camellia sinensis (L.) O.Kuntze
  • Carica papaya L.
  • Cocos nucifera L.
  • Cucurbita L.
  • Ficus L.
  • Hedera L.
  • Jasminum L.
  • Mangifera indica L.
  • Melia azadirachata L.
  • Morus L.
  • Musa L.
  • Olea europaea Linnaeus
  • Prunus L.
  • Prunus armeniaca L.
  • Prunus persica Batsch
  • Rhamnus L.
  • Rosa L.
  • Salix L.
  • Solanum L.
  • Solanum melongena L.
  • Ulmus L.
  • Vitis vinifera L.
  • Orchidaceae (family)
  • Citrus
  • Arecaceae (family)

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

Northern Ireland: regulated in the specific measures for import of selected high risk hosts

Actions Indicated

  • show / hide


Statutory action in Northern Ireland in line with legislation. No statutory action in Great Britain.

General Comments

Tropical and subtropical scale insect which is a serious pest of tropical crops (e.g. coconut, arecanut and papaya), but not thought to pose a risk to the UK.

Further Information


  • show / hide

Key uncertainty for pest

Which hosts are grown under protection in the largest numbers, and therefore at the most risk.


Current distribution






UK distribution

Risk Records for this Pest