Although not yet a pest on the North Shore, this beetle is present in Worcester County, and was also spotted in Jamaica Plain. This destructive pest favors maple, elm, horsechestnut, birch, and others. It is a large insect, with black and white segmented antennae, that leaves large exit holes in host trees.
If you think you have seen this pest in your area, contact your arborist, tree warden, or US Forest Service immediately. Preventative treatments may be an option for uninfested trees.