Introduction Western tent caterpillar (Malacosoma californicum) is a significant defoliator of broadleaved trees and shrubs. It is one of the most frequently observed and widely variable tent caterpillars in North…

Introduction Elm leaf beetle (Xanthogaleruca luteola) is a significant nuisance of elm trees. It is a member of the family Chrysomelidae. Elm leaf beetle is indigenous to Europe. It was…

Introduction Aphids, also known as plant lice, blackflies, or greenflies, and sometimes erroneously referred to as whiteflies, are small, soft-bodied insects that feed on the sap and other liquids of…

Introduction Forest tent caterpillar (Malacosoma disstria) is a significant defoliator of various trees and shrubs. It is indigenous to North America. Outbreaks of forest tent caterpillar occur periodically, often at…

Introduction Eastern tent caterpillar (Malacosoma americanum) is a species of moth that is native to North America. The insect was first observed in the United States in 1646. Eastern tent…

Introduction Japanese beetle (Popilla japonica) is a long, green beetle that is native to Japan. It is considered one of the most devastating pests of turfgrasses, and urban landscape plants…

Introduction Bagworm (Thyridopteryx ephemeraeformis), also referred to as eastern bagworm, common bagworm, common basket worm, North American bagworm, or evergreen bagworm, is a native insect that infests many deciduous and…

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…