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.
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Warren root collar weevil
Scientific name: Hylobius warreni Wood
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Western ash bark beetle
Scientific name: Hylesinus californicus [Swaine]
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Western balsam bark beetle
Scientific name: Dryocoetes confusus Sw.
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Western blackheaded budworm
Scientific name: Acleris gloverana (Walsingham)
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Western cedar borer
Scientific name: Trachykele blondeli Marseul
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Western false hemlock looper
Scientific name: Nepytia freemani (Munroe)
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Western hemlock looper
Scientific name: Lambdina fiscellaria lugubrosa (Hulst)
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Western larch sawfly
Scientific name: Anoplonyx occidens Ross
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Western oak looper
Scientific name: Lambdina fiscellaria somniaria (Hulst)
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Western pine elfin
Scientific name: Callophrys eryphon (Boisduval)
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Western spruce budworm
Scientific name: Choristoneura occidentalis occidentalis Freeman
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Western webspinning sawfly
Scientific name: Cephalcia californica Middlekauff
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White pine weevil
Scientific name: Pissodes strobi (Peck)
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White pine weevil eurytomid (suggested name)
Scientific name: Eurytoma pissodis Girault
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White slaut
Scientific name: Tetracis cachexiata (Guenée)
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White-banded pimpline (suggested name)
Scientific name: Itoplectis conquisitor (Say)
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Whitelined looper
Scientific name: Epirrita pulchraria (Taylor)
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Whitemarked tussock moth
Scientific name: Orgyia leucostigma (J. E. Smith)
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Whitespotted sawyer
Scientific name: Monochamus scutellatus (Say)
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Whitetriangle leafroller
Scientific name: Clepsis persicana (Fitch)
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Willow flea weevil
Scientific name: Isochnus rufipes (LeConte)
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Winter moth
Scientific name: Operophtera brumata (L.)