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UK Risk Register Details for Xylotrechus (Turanoclytus) namanganensis

Please note: there are high levels of uncertainty associated with the risk scores for this pest.

This record was last updated on 14/12/2022

Common Names

  • Namangan longhorn beetle
  • willow longhorn beetle

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Wood packaging material

Common Pathways

  • show / hide
  • Plants for planting (except seeds bulbs and tubers)
  • Non-squared wood
  • Wood packaging material

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 3
Impact [1 - 5] 4
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

International standard treatments on wood packaging material



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 3
Impact [1 - 5] 4
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 / Territory Status Notes
United Kingdom Absent
China Present (Limited) Xinjiang
Afghanistan Present
Kazakhstan Present
Kyrgyzstan Present
Turkmenistan Present
Tajikistan Present
Uzbekistan Present

Type of Pest

  • Insect (Coleoptera)

Host or Industry at Risk

  • show / hide

Broadleaved trees

Major Hosts

  • Alnus Mill.
  • Alnus glutinosa (L.) Gaertn.
  • Betula L.
  • Celtis australis L.
  • Elaeagnus angustifolia L.
  • Juglans regia L.
  • Malus Mill.
  • Malus domestica Borkhausen
  • Morus L.
  • Morus nigra L.
  • Platanus L.
  • Platanus x acerifolia (Aiton) Willdenow
  • Populus L.
  • Populus alba L.
  • Populus nigra L.
  • Prunus L.
  • Prunus armeniaca L.
  • Prunus avium ssp./var. avium L.
  • Prunus dulcis (Mill.) D.A.Webb
  • Salix L.
  • Salix alba L.
  • Ulmus L.
  • Ulmus minor Mill. em. Richens
  • Ulmus pumila L.

Threats to Protected Cultivation

  • N/A

Forest Tree Pests and Pathogens

  • Broadleaved

Further Information

PRA Availability

EPPO (2003)

Regulation and EPPO listing

  • show / hide

Provisional quarantine pest (Great Britain, as Xylotrechus spp.). EPPO A2

Actions Indicated

  • show / hide


Statutory action against findings

General Comments

Polyphagous longhorn beetle pest originating in Asia. Some uncertainty regarding risk to UK, but statutory action would be taken against findings on a precautionary basis.

Further Information


  • show / hide

Key uncertainty for pest

The suitability of the UK climate for build up of damaging populations of the beetle.


Current distribution






UK distribution