• Pest spreads to maximum extent

• Plants for planting (except seeds bulbs and tubers)
• Natural spread

• Plants for planting (except seeds bulbs and tubers)
• Natural spread

× Likelihood For "Pest is Introduced" the lowest value of Entry or Establishment, as both are required for a successful introduction. For "Pest Spreads to Maximum Extent" this is an expert judgement on the likelihood of this occurrence. See Guidance Document for more Information Close Likelihood [1 - 5]		2
× Spread The rate at which a pest can expand, by natural dispersal only, within an area. See Guidance Document for more Information Close Spread [1 - 5]		2
× Impact The highest value from economic, environmental or social impacts. See Guidance Document for more Information Close Impact [1 - 5]		2
× Value at Risk The value of the hosts or industries at risk from this pest in the UK. See Guidance Document for more Information Close Value at Risk [1 - 5]					5
× Likelihood x Impact The likelihood multiplied by the impact, which shows the risk to the sector. See Guidance Document for more Information Close Likelihood x Impact [1 - 25]	4
× UK Relative Risk Rating Likelihood x Impact x Value at Risk. See Guidance Document for more Information Close UK Relative Risk Rating [1 - 125]	20

Key mitigation for pest

Prohibition of key hosts from some parts of the current range

Regulation

Surveillance

Industry Scheme

Contingency Plan

Awareness

Research

× Likelihood For "Pest is Introduced" the lowest value of Entry or Establishment, as both are required for a successful introduction. For "Pest Spreads to Maximum Extent" this is an expert judgement on the likelihood of this occurrence. See Guidance Document for more Information Close Likelihood [1 - 5]		2
× Spread The rate at which a pest can expand, by natural dispersal only, within an area. See Guidance Document for more Information Close Spread [1 - 5]		2
× Impact The highest value from economic, environmental or social impacts. See Guidance Document for more Information Close Impact [1 - 5]		2
× Value at Risk The value of the hosts or industries at risk from this pest in the UK. See Guidance Document for more Information Close Value at Risk [1 - 5]					5
× Likelihood x Impact The likelihood multiplied by the impact, which shows the risk to the sector. See Guidance Document for more Information Close Likelihood x Impact [1 - 25]	4
× UK Relative Risk Rating Likelihood x Impact x Value at Risk. See Guidance Document for more Information Close UK Relative Risk Rating [1 - 125]	20

Regulation

Deregulation

Management By Industry

Targeted Survey

PRA

Contingency Plan

Publicity

Research

Country / Territory			Status			Notes
Europe
	United Kingdom		Present (Limited)			Only known from one location
	Albania		Present
	Austria		Present
	Bulgaria		Present
	Croatia		Present
	Cyprus		Present
	Czech Republic		Present
	Germany		Present
	Hungary		Present
	Malta		Present
	Poland		Present
	Romania		Present
	Russia		Present
	Switzerland		Present
	Türkiye		Present
	France		Present			including Corsica
	Ukraine		Present			including Crimea
	Greece		Present			including Crete
	Italy		Present			including Sardinia and Sicily
	Portugal		Present			including Azores and Madeira
	Spain		Present			including Balearic Islands and Canary Islands
South America
	Argentina		Present
Africa
	Algeria		Present
	Egypt		Present
	Morocco		Present
Asia
	Azerbaijan		Present
	Georgia		Present
	Iran		Present
	Iraq		Present
	Israel		Present
	Pakistan		Present
	Syria		Present

• Insect (Hemiptera)

Pinus

• Abies alba Miller
• Cedrus Trew
• Cedrus atlantica (Endl.) Manetti Ex Carr.
• Pinus L.
• Pinus ayacahuite Ehrenb.
• Pinus brutia Tenore
• Pinus canariensis C.Smith/Sweet Ex Spreng.
• Pinus halepensis Mill.
• Pinus mugo Turra
• Pinus nigra Arnold
• Pinus palustris Mill.
• Pinus pinaster Soland In Ait.
• Pinus pinea L.
• Pinus ponderosa Dougl. Ex P. & C.Laws.
• Pinus radiata D.Don
• Pinus roxburghii Sargent
• Pinus strobus L.
• Pinus sylvestris Linnaeus
• Pinus devoniana Lindl.

• N/A

• Coniferous

PRA Availability

PRA not available

Not currently listed

Action

No statutory action.

General Comments

Scale insect which feeds on pine trees and some other conifers. Native to Europe, the first UK population was found at one location in London in 2023 on pine trees in an urban environment. Limited evidence of impacts in the native and introduced range of the pest, and it appears to only cause noticeable impacts in urban environments, where hosts are exposed to other environmental stressors.

Key uncertainty for pest

Whether there are additional, undetected, UK populations.

Climate

Current distribution

Hosts

Impact

Pathways

Regulation

Taxonomy

UK distribution