Turkey-introduction
Guides
Agrilus bilineatus
two-lined chestnut borer, twolined chestnut borer
Agrilus bilineatus is a metallic wood-boring beetle native to eastern North America that attacks oak trees (Quercus spp.) and chestnut (Castanea spp.). Unlike most Agrilus species that develop in dead twigs and branches, it is a trunk borer of living trees and represents a significant forest pest. Adults emerge from June through September with peak activity in late June to July. The species has been introduced to Turkey, where it poses an emerging threat to European oak and chestnut species.