Ability to Respond Total:16 / 25Ability to Respond = ( Ease of Response + Tools in Place )
Confidence:High
Confidence Notes:
Impact
Spread
Notes
Score
Spread Rate
Beetle can fly, but movement through wood and wood products is a more viable spread factor.
5
Spread Amount
Native to Europe, first discovered in the US in July 1992, in a Christmas tree plantation now in thirteen northern states: IL, IN, IA, ME, MD, MI, NH, NY, OH, PA, VT, WV and WI; the fit for CA conditions is unknown at this time
4
Damage
Notes
Score
Ecological
Most serious scolytid pine pest in Europe; attacks Scotch pine, Austrian pine, E. white pine, red pine, and jack pine, adults enter shoots of one-year old, hollow out 1- 4", >1 shoot/adult. Shoots bend near pt. of entry, turn yellow to red, and break off.
3
Agricultural
0
Infrastructure
0
Cultural
0
Health
0
Benefit
Notes
Score
Ecological
0
Agricultural
0
Infrastructure
0
Cultural
0
Health
0
Total
12
Ability to Respond
Ease of Response
Notes
Score
Detection
Adults and larvae are cryptic, making monitoring difficult; symptoms include dieback, yellowing, and especially dead, bored-out shoots littering the ground under infested tree and could be used as a sign of infestation but these are not really diagnostic.
3
Control
Apparently no practical chemical control for this pest, cultural practices used in Europe include precise timing of cutting operations and the debarking of cut timber; some information of predators and parasitoids.
3
Tools in Place
Notes
Score
Entry
A-rated pest from CDFA.
5
Control
A-rated pest from CDFA.
5
Outreach
No efforts in this area in CA; a quarantine on the movement of host trees from infested states exists in the Midwestern US.
