UK Risk Register Details for Hyphantria cunea

Common Names

  • American white moth
  • Fall webworm
  • Mulberry moth

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Hitchhiking

Common Pathways

  • show / hide
This section is currently being developed as part of the next phase of the Risk Register.

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 4
Spread [1 - 5] 3
Impact [1 - 5] 2
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 8
UK Relative Risk Rating [1 - 125] 40

Current Mitigations

  • show / hide

Key mitigation for pest



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 4
Spread [1 - 5] 3
Impact [1 - 5] 2
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 8
UK Relative Risk Rating [1 - 125] 40

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country Status Notes
Europe Present
Albania Present
Austria Present
Bosnia-Herzegovina Present
Bulgaria Present
Switzerland Present
Czech Republic Present
France Present
United Kingdom Absent
Greece Present
Croatia Present
Hungary Present
Italy Present
Moldova Present
Poland Present
Romania Present
Serbia Present
Russia Present
Slovenia Present
Slovakia Present
Turkey Present
Ukraine Present
North America Present
Canada Present
Mexico Present
United States Present
Asia Present
Azerbaijan Present
China Present
Georgia Present
Iran Present
Japan Present
Kyrgyzstan Present
North Korea Present
South Korea Present
Kazakhstan Present

Type of Pest

  • Insect (Lepidoptera)

Host or Industry at Risk

  • show / hide

Orchard crops, broadleaved trees

Major Hosts

  • Carya illinoinensis K.Koch
  • Carya ovata (Mill.) K.Koch
  • Diospyros virginiana L.
  • Juglans nigra L.
  • Liquidambar styraciflua L.
  • Malus domestica Borkhausen
  • Morus alba L.
  • Prunus avium ssp./var. avium L.
  • Prunus cerasus L.
  • Prunus domestica ssp. domestica L.
  • Pyrus communis L.
  • Acer negundo

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

  • Broadleaved

Further Information

PRA Availability

UK (2015)

EU and EPPO Listing

Not currently listed

Actions Indicated

  • show / hide


No statutory action against findings.

General Comments

A North American pest introduced into Europe where there was major concern in the 1950s. Occasional finds in the UK, although a UK PRA has indicated that little damage is expected as the UK is at the edge of the pest’s climatic range.

Risk Records for this Pest