emerald ash borer |
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 1241001 Adult(s) David Cappaert |
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 1460042 Galleries Toby Petrice |
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 1460056 Larva(e) Toby Petrice |
 1460057 Larva(e) Toby Petrice |
 5382310 Adult(s) Eric R. Day |
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 5369277 Adult(s) Susan Ellis |
 9006028 Adult(s) Brian Sullivan |
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 9006029 Adult(s) Brian Sullivan |
 9006030 Adult(s) Brian Sullivan |
 9006044 Larva(e) Brian Sullivan |
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 9006045 Adult(s) Brian Sullivan |
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 1337001 Egg(s) Houping Liu |
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 5369161 Adult(s) Marianne Prue |
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Definition Emerald ash borer (EAB) is native to Asia. It is known to be established in Michigan, Ontario, Ohio, Indiana, Illinois, and Maryland. EAB probably arrived in the United States on solid wood packing material from Asia. U.S. pathways include the movement of infested ash trees, limbs, firewood, logs, and untreated ash lumber. Hosts include all ash species; however, green ash, white ash, and black ash are more susceptible than Asian varieties. Females lay eggs 2 weeks after emergence. During this time, adults feed on the leaves, making them irregularly notched. Eggs are initially light-yellow, turning to brownishyellow before hatching. Eggs hatch in 1-2 weeks, and the tiny larvae bore through the bark and into the cambium layer. The creamy white larvae are 1 – 1 1/4 inches long with flat, broad, segmented bodies. Larvae feed in the cambium creating S-shaped, frass-packed tunnels. Adults begin emerging in mid-June leaving 0.1 – 0.2 inches "D" shaped emergence holes. It is a small, brassy-green, metallic woodboring beetle measuring 1/3 to 1/2 inches in length. Vertical splits in the bark are created by the tree forming callus tissue in response to larval feeding. The damage by the larvae causes general yellowing and thinning of the foliage followed by crown dieback and the eventual death of the tree. Basal sprouting and the presence of woodpeckers may indicate wood-boring beetle activity. After 1 to 2 years of infestation, the bark often falls off in pieces from damaged trees, exposing the insect galleries. The life cycle in Michigan takes between 1-2 years. |
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References Common Name Reference: Web Search - http://zipcodezoo.com/Animals/A/Agrilus_planipennis/ Scientific Name Reference: Web Search - http://zipcodezoo.com/Animals/A/Agrilus_planipennis/ |
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Categories Insects: Boring Insects |
Links to Other Data Sources NPDN Pest: INAHQJA |
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Taxonomic Synonyms No taxonomic synonyms listed for this subject. |
Other Common Names No other common names listed for this subject. |
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