Table 1.

Suppression strategies and scenarios.

	Wide host range scenario	Narrow host range scenario
Strategy A	All reproductive and non-reproductive hosts (142,288 trees) were susceptible. Treatment involved removing infested trees and replacing them with non-host tree species.	All preferred hosts (40,362 trees) were susceptible. Treatment involved removing infested trees and replacing them with non-host tree species.
Strategy B	All reproductive and non-reproductive hosts (142,288 trees) were susceptible. Treatment involved pruning necrotic limbs from infested trees and administering bell injections of systemic insecticide biennially.	All preferred hosts (40,362 trees) were susceptible. Treatment involved pruning necrotic limbs from infested trees and administering bell injections of systemic insecticide biennially.
Strategy C	All reproductive and non-reproductive hosts (142,288 trees) were susceptible. Treatment involved: (i) removing infested box elder maple, coral tree and black locust (8,214 trees) and replacing them with non-host tree species; (ii) pruning necrotic limbs from other infested trees and administering bell injections of systemic insecticide biennially.	All preferred hosts (40,362 trees) were susceptible. Treatment involved: (i) removing infested box elder maple, coral tree and black locust (8,214 trees) and replacing them with non-host tree species; (ii) pruning necrotic limbs from other infested trees and administering bell injections of systemic insecticide biennially.