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Beech scale is an introduced insect that damages beech trees; this damage can lead to beech bark disease. The insect was introduced to North America in the late 1800’s and has spread throughout eastern Canada. Beech scale feeds by piercing through the bark of a tree and sucking plant juices. This damage has little effect on the tree, but can cause wounds and cracks in the tree which can allow the fungi to enter and infect the tree. Once infected, trees begin to decline and can eventually die from beech bark disease. This publication describes the biology, impact and management options for beech scale.