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Insects and mites

Insects and mites can damage the leaves, branches, roots, or stems of trees, either directly by feeding on these structures or indirectly by acting as vectors transmitting diseases. The damage can range from relatively minor issues, such as a negative affect on plant appearance, to more severe issues, including reduced tree growth and even tree death. Insects and mites, however, also play important ecological roles in forests by decomposing and recycling organic matter and nutrients, pollinating flowers, and serving as food sources for wildlife. Many insects and mites, acting as natural enemies (i.e., predators, parasitoids, or parasites) of pests, play a beneficial role in reducing pest populations. The study of insects is referred to as entomology, while the study of mites and ticks is called acarology. Insects and mites are classified according to a taxonomic system.

Index of common and scientific names of insects and mites

The insect or mite entries have sections containing nomenclature and taxonomy; general information and importance; distribution and hosts; symptoms and signs; life cycle; damage; prevention and management; selected references; and photographs of various life stages and damage.

Galls of hardwoods

Scientific name: Eriophyes sp.

Gelechiid moth

Scientific name: Chionodes continuella (Zeller)

Gilpinia hercyniae (Hartig)

Common name: European spruce sawfly

Glycobius speciosus (Say)

Common name: Sugar maple borer

Gnathotrichus sulcatus (LeConte)

Common name: Ambrosia beetle

Golden buprestid

Scientific name: Buprestis aurulenta Linnaeus

Gray spruce looper

Scientific name: Caripeta divisata Walker

Great brocade

Scientific name: Eurois occulta (Linnaeus)

Green larch looper

Scientific name: Semiothisa sexmaculata (Packard)

Green spruce aphid; spruce aphid

Scientific name: Elatobium abietinum (Walker)

Green velvet looper

Scientific name: Epirrita autumnata (Harrison)

Greenheaded spruce sawfly

Scientific name: Pikonema dimmockii Cresson

Greenstriped forest looper

Scientific name: Melanolophia imitata (Walker)

Greenstriped mapleworm

Scientific name: Dryocampa rubicunda (Fabricius)

Greenstriped webspinning sawfly

Scientific name: Acantholyda balanata (MacGillivray)