Ability to Respond Total:18 / 25Ability to Respond = ( Ease of Response + Tools in Place )
Confidence:High
Confidence Notes:
Impact
Spread
Notes
Score
Spread Rate
Natural spread is slower than with some insects that can fly effectively, flight with scale insects is of short range, movement would be facilitated with human activities and on ornamental plants.
3
Spread Amount
Has been eradicated from CA; occurs in HI and some eastern and southern parts of the U.S., originates in the Far East; does not appear to be limited by environmental conditions are much as some other scale species.
5
Damage
Notes
Score
Ecological
Increased insecticide usage would result to manage this pest if it established - this could threaten environmental quality.
1
Agricultural
Many hosts within Rhamnaceae and Theaceae families. Significant pest of apple, pear, tea / Camellia & citrus. Could be damaging to several important CA industries.
4
Infrastructure
0
Cultural
Impacts on home production of fruit.
1
Health
0
Benefit
Notes
Score
Ecological
A few native plants could be affected.
1
Agricultural
0
Infrastructure
0
Cultural
0
Health
0
Total
13
Ability to Respond
Ease of Response
Notes
Score
Detection
Scales overall are difficult to sample and detect - this is due to their small size, cryptic habits.
4
Control
Scales overall are difficult to control, they have a protective covering which protects them from non-specialized natural enemies and from insecticides.
