Wilting of single branches or the whole crown; on the stem base wood shavings (frass), blackish bark „roses“ on branches or thin stems; feeding tunnels (varying depending on the species of the beetle) below the bark of branches.
Affected tree species
Commonly attacking trees weakened by stress. In heavily infested stands also healthy trees may be affected. Decline of trees; often occurring together with bacterial canker of Ash (possibility of errors).
Curative measures Curative measures not possible
Hygienic: dead and dying trees should be removed from the stand.
Avoid storage of fire wood close to healthy ashes
Feeding injury of Ash bark beetle (Leperisinus fraxini
Symptoms on detachment scars of twigs
Feeding damage of Ash bark beetle (Leperisinus varius)