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UK Risk Register Details for Pseudaulacaspis pentagona

This record was last updated on 10/07/2023

Common Names

  • Japanese fruit scale
  • Mulberry scale
  • west indian peach scale
  • West Indian scale
  • White peach scale
  • white plum scale
  • white scale

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest spreads to maximum extent

Pathway Assessed for Entry to UK

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

Common Pathways

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

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 non quarantine pest



Industry Scheme

Contingency Plan



Mitigated 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

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
Switzerland Present
United Kingdom Present (Limited)
Spain Present
Türkiye Present
Bulgaria Present
Croatia Present
Czech Republic Present
France Present
Germany Present
Greece Present
Hungary Present
Italy Present
Malta Present
Netherlands Present
Portugal Present
Slovakia Present
Republic of North Macedonia Present
Montenegro Present
Russia Present
Serbia Present
Slovenia Present
Ukraine Present
Cyprus Present
North America Present
United States Present
South America Present
Argentina Present
Bolivia Present
Brazil Present
Colombia Present
Peru Present
Suriname Present
Uruguay Present
Venezuela Present
Guyana Present
Oceania Present
Australia Present
Micronesia Present
New Caledonia Present
Palau Present
Papua New Guinea Present
Samoa Present
Solomon Islands Present
Tonga Present
Vanuatu Present
Wallis et Futuna Present
Africa Present
Cabo Verde Present
Egypt Present
Ghana Present
Madagascar Present
Malawi Present
Mauritius Present
Reunion Present
Sao Tome and Principe Present
Seychelles Present
South Africa Present
Tanzania Present
Zimbabwe Present
Comoros Present
Asia Present
Azerbaijan Present
Brunei Present
China Present
Georgia Present
India Present
Indonesia Present
Iran Present
Iraq Present
Japan Present
North Korea Present
South Korea Present
Malaysia Present
Maldives Present
Nepal Present
Philippines Present
Singapore Present
Sri Lanka Present
Syria Present
Taiwan Present
Vietnam Present
Central America
Bermuda Present
Antigua and Barbuda Present
Bahamas Present
Cuba Present
Costa Rica Present
Dominica Present
Dominican Republic Present
Guadeloupe Present
Haiti Present
Honduras Present
Jamaica Present
Martinique Present
Panama Present
Puerto Rico Present
Saint Kitts and Nevis Present
Saint Vincent and the Grenadines Present
Trinidad and Tobago Present

Type of Pest

  • Insect (Hemiptera)

Host or Industry at Risk

  • show / hide

Ornamental and fruit trees (Morus and Prunus)

Major Hosts

  • Cajanus cajan (L.) Millsp./Huth
  • Capsicum annuum L.
  • Carica papaya L.
  • Catalpa bignonioides Walt.
  • Catharanthus roseus (L.) G.Don
  • Celtis L.
  • Codiaeum variegatum (L.) A.Juss.
  • Euonymus L.
  • Ficus L.
  • Fraxinus L.
  • Hibiscus L.
  • Juglans regia L.
  • Magnolia L.
  • Malus Mill.
  • Manihot esculenta Crantz
  • Morus alba L.
  • Nerium oleander L.
  • Philadelphus L.
  • Prunus armeniaca L.
  • Prunus domestica ssp. domestica L.
  • Prunus dulcis var. dulcis (Mill.) D.A.Webb
  • Prunus persica Batsch
  • Prunus salicina Lindl.
  • Ribes L.
  • Solanum melongena L.
  • Sorbus L.
  • Syringa vulgaris L.
  • Vitis L.

Threats to Protected Cultivation

  • Both protected crops and outdoor production

Forest Tree Pests and Pathogens

  • N/A

Further Information

PRA Availability

UK (2007)

Regulation and EPPO listing

  • show / hide

Regulated non quarantine pest

Actions Indicated

  • show / hide


Statutory action in line with legislation

General Comments

Scale insect which in favourable conditions may kill trees. There have been a number of findings in the UK but some uncertainty about whether the pest is established.

Further Information


  • show / hide

Key uncertainty for pest

Potential outdoor distribution in UK climate


Current distribution






UK distribution

Risk Records for this Pest