EAB is an exotic beetle native to Asia that was discovered in southeastern Michigan near Detroit in the summer of 2002. The larvae (the immature stage) feed on the inner bark of ash trees, disrupting the tree's ability to transport water and nutrients, and has killed tens of millions of Ash trees.
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David Cappaert, Michigan State University, Bugwood.org |
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| Asian longhorned beetle (Anoplophora glabripennis) Do not confuse with the native: Cottonwood borer (Plectrodera scalator) |
aphis.usda.gov |
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Introduced from Eurpoe to Massachusetts in 1869, the Gypsy moth (Lymantria dispar) is a plain-looking insect that people would not notice if it were not for its caterpillar stage. A female moth lays a cluster of eggs (called an egg mass) on and near trees, and each egg mass can hatch up to a thousand tiny caterpillars with a ravenous appetite for tree leaves. They feed on over 500 species of trees and shrubs. Gypsy moth (Lymantria dispar L.) poses a serious threat to trees as its caterpillars are one of the most destructive defoliators of hard and softwood trees. |
Connecticut Agricultural Experiment Station Archive,
Connecticut Agricultural Experiment Station,Bugwood.org
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Mountain pine beetle (MPB) is native to the forests of western North America. Periodic outbreaks of the insect, previously called the Black Hills beetle or Rocky Mountain pine beetle, can result in losses of millions of trees. Recently, the mountain pine beetle has been spotted in the panhandle of Nebraska.
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 ext.colostate.edu
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The pine shoot beetle (Tomicus piniperda L.) is an introduced pest of pines. It was first discovered in the US at a Christmas tree farm near Cleveland, Ohio, in July 1992. A native of Europe, the beetle attacks new shoots of pine trees, stunting the growth of the trees. The pine shoot beetle may also attack stressed pine trees by breeding under the bark at the base of the trees. The beetles can cause severe decline in the health of the trees, and in some cases, kill the trees when high populations exist. |
 invasive.org |
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| Sirex woodwasp (Sirex noctilio) |
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| Water Flea (Daphnia lumholtzi) |
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| Cereal leaf beetle (Oulema melanopus) |
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| European corn borer (Ostrinia nubilalis) |
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| Hessian fly (Mayetiola destructor) |
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| Varroa mite (Varroa jacobsoni) |
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| Japanese beetle (Popillia japonica) |
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| Russian wheat aphid (Diuraphis noxis) |
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| Soybean aphid (aphis glysines) |
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