Ability to Respond Total:16 / 25Ability to Respond = ( Ease of Response + Tools in Place )
Confidence:High
Confidence Notes:May be more wide spread in California than reported. Heavy infestations have been found in southern California nurseries.
Impact
Spread
Notes
Score
Spread Rate
Easily transported long distances on infested plants and can disperse locally by crawling, wind, or by hitchhiking on clothing, equipment, or animals.
4
Spread Amount
Has rapidly spread in areas of introduction. Attacks cycads in Boweniaceae, Cycadeae, Stangeriaceae, and Zamiaceae families.
3
Damage
Notes
Score
Ecological
Increased insecticide usage would result to manage this pest if it established - this could threaten environmental quality.
1
Agricultural
Would lower yields in cycad nursery stock production and reduce the value of cycad nursery stock. It might also trigger disruptions of markets for nursery stock.
3
Infrastructure
0
Cultural
Cycads are popular, high-value ornamental plants in California.
2
Health
0
Benefit
Notes
Score
Ecological
0
Agricultural
0
Infrastructure
0
Cultural
0
Health
0
Total
13
Ability to Respond
Ease of Response
Notes
Score
Detection
The scale is unusual in that it may also infests the roots of its host plant. Small populations are difficult to sample and detect due to their small size, cryptic habits.
3
Control
Chemical applications can have mixed effectiveness. Best management strategy includes removal of infested fronds before chemical application. Scales highly persistant
2
Tools in Place
Notes
Score
Entry
A-rated pest from CDFA.
5
Control
A-rated pest from CDFA.
5
Outreach
Some outreach material available. Minimal outreach.
