Insect Profiles: Aphids
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…
Insect Profiles: Forest Tent Caterpillar (Malacosoma disstria)
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…
Insect Profiles: Eastern Tent Caterpillar (Malacosoma americanum)
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…
Tree Diseases: Pine Needle Scale (Chionaspis pinifoliae)
Introduction Pine needle scale (Chionaspis pinifoliae), also referred to as white scale, is a tiny armored insect that infests various species of pine. The insect is notable for the distinct…
Tree Diseases: White Pine Blister Rust
Introduction White pine blister rust is a fungal disease of white pine. It is caused by the fungus, Cronartium ribicola. The disease pathogen is native to Asia. It was inadvertantly…
Tree Diseases: Pine-Oak Gall Rust
Introduction Pine-oak gall rust, also referred to as eastern gall rust, is a fungal disease that affects various pine and oak trees. The disease is native to North America. It…
Tree Diseases: Pine-Pine Gall Rust
Introduction Pine-pine gall rust, also referred to as western gall rust, and Woodgate gall rust, is a fungal disease that infects two and three needle pine trees. It is caused…
Tree Diseases: Lophodermium Needle Cast
Introduction Lophodermium needle cast is a fungal disease that affects two and three needled pines, as well as some five needled pines. The disease is caused by the fungus, Lophodermium…
Tree Diseases: Elytroderma Needle Cast
Introduction Elytroderma needle cast, also known as Elytroderma disease, is a fungal disease of pine trees. It is especially common on ponderosa pine. Elytroderma needle cast is caused by the…
Tree Diseases: Dothistroma Needle Blight of Pines
Introduction Dothistroma needle blight, often referred to as red band disease in the western United States, is a devastating foliar disease of pines. The causal agent of the disease is…
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