Introduction Cooley spruce gall adelgis (Adelges cooleyi) is a small black insect native to North America. The insect causes the formation of galls on several spruce trees, as well as…

Introduction Black vine weevil (Otiorhynchus sulcatus), also referred to as vine weevil or taxus weevil, is a serious pest of ornamental plantings. The insect is native to Europe. It was…

Introduction White pine weevil (Pissodes strobi) is an insect that attacks and deforms at least twenty different tree species. The insect is sometimes referred to as spruce weevil in the…

Introduction Eastern spruce gall adelgid (Adelgis abietis) is an insect that inflicts considerable damage to ornamental spruce trees. The larvae induce the formation of cone-like galls on developing twigs, which…

Introduction Boxwood leafminer (Monarthropalpus flavus) is a small midge that feeds on the leaves of boxwood. It is considered the most serious pest of boxwood. During its larval stage, boxwood…

Introduction White pine bark adelgid (Pineus strobi) is a small insect that defoliates eastern white pine, and several other species of pine. Though seldom fatal, severe infestations can be an…

Introduction Two-lined chestnut borer (Agrilus bilineatus) is a beetle that is native to North America. It is a member of the beetle family Buprestidae. Two-lined chestnut borer was once considered…