Ability to Respond Total:17 / 25Ability to Respond = ( Ease of Response + Tools in Place )
Confidence:High
Confidence Notes:Cnestus mutilatus has spread rapidly in eastern United States since its introduction, and has the potential to have significant economic and environmental impacts despite limited impacts seen in eastern US.
Impact
Spread
Notes
Score
Spread Rate
Strong flier, may be transported in firewood, host range covers much of the state. Also may be transported in wood packaging and other wood products.
5
Spread Amount
Host range (more than 20 botanical families) covers most of the state.
5
Damage
Notes
Score
Ecological
Females bore into fuel storage containers potentially increasing fire risk. Potential to attack native trees under stress causing canopy dieback and potentially death. Introduction would likely cause increased insecticide usage.
2
Agricultural
Known pest of nursery stock. Potential pest of grapevines and stone fruit.
3
Infrastructure
C. mutilatus has been documented as damaging containers and lines containing gasoline fuel, such as plastic fuel storage containers, equipment fuel tanks, and boat fuel lines.
1
Cultural
Many host trees of the beetle are planted as ornamentals in California and are likely to be significantly affected by this pest.
2
Health
0
Benefit
Notes
Score
Ecological
0
Agricultural
0
Infrastructure
0
Cultural
0
Health
0
Total
18
Ability to Respond
Ease of Response
Notes
Score
Detection
Traps and lures available. Attacks stems that are 2-5 cm in diameter. The beetles culture a fungus on the walls of their galleries, which their larvae feed upon.
3
Control
Insecticide treatments using pyrethroids have been developed for nurseries. However, chemical control efficiency relies on the time when the chemical is applied and would be difficult to adapt to wild tree populations.
3
Tools in Place
Notes
Score
Entry
A-rated pest from CDFA.
5
Control
A-rated pest from CDFA.
5
Outreach
Limited outreach material available from eastern US.
