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Plant Health
| Emeral Ash Borer Photo Gallery |
Select an image to see a larger photo.
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After pupating within the ash host, EAB adults emerge in the Spring. Image: James Zablotny Ph.D. |  |
Exit holes are sometimes found low of the tree trunk. Image: Gerald Wheeler | ||
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Within days they mate and lay eggs. Image: Brian Sullivan |  |
Infested ash hosts may have cracked bark due to larval feeding damage to tissue. Image: Gerald Wheeler | ||
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Females search bark for an appropriate place to lay their eggs. Image: Brian Sullivan |  |
In old or heavy infestations, cracks and split in the bark are external symptoms of EAB larval feeding. Image: Gerald Wheeler | ||
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Once found, female EABs lay eggs on bark. Image: Brian Sullivan |  |
Infested ash trees initially show yellowing leaves. Image: Gerald Wheeler |
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EAB larvae are often found boring galleries near the bases of branches as this location provides them some protection from woodpecker predators. Image: Gerald Wheeler |  |
As the infestation progresses, trees lose their leaves prematurely. Image: Gerald Wheeler | ||
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EAB larvae cause damage to ash hosts by boring galleries in the sapwood. Image: Brian Sullivan |  |
Thinning crowns in ash trees are a clue that EAB may be boring inside. Image: Gerald Wheeler | ||
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Larvae bore galleries in the wood, pupate within these gallery spaces, and emerge through holes in the spring. Image: Gerald Wheeler |  |
Beneath the cracked bark, evidence of heavy larval feeding can be seen. Image: Gerald Wheeler | ||
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Here, an adult ready to emerge, can be seen within the wood tissue. Image: Gerald Wheeler |  |
Several species of ash are hosts for EAB. Image: James Zablotny Ph.D. | ||
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Close view of gallery and exit hole. Image: Gerald Wheeler |  |
The emerald ash borer has, thus far, only been found on ash hosts in the U.S. Image: Brian Sullivan | ||
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Larval feeding, resulting in frass-packed galleries, can cause extensive damage to host. Image: Gerald Wheeler |  |
EAB have a distinctive iridescent green and copper color, and a bullet-shaped body typical of buprestid beetles. Image: James Zablotny Ph.D. | ||
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After pupating in the galleries they have excavated by feeding as larvae, adults emerge through D-shaped holes. Image: Gerald Wheeler |  |
Bullet-shaped body of EAB is typical of beetles in the family Buprestidae. Image: S. Ellis | ||
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This view of stripped bark illustrates the typical “D” shape of the exit hole. Image: Gerald Wheeler |  |
Dorsal view of EAB. Image: James Zablotny Ph.D | ||
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Trees bearing D-shaped exit holes have been infested from the previous year. Image: Gerald Wheeler |  |
Ventral view of EAB. Image: James Zablotny Ph.D | ||
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The D-shaped exit holes are small and may be obscured by the texture of the bark. Image: Gerald Wheeler |  |
Frontal view of EAB head. Image: S. Ellis | ||
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Close view of D-shaped exit hole with bark partly removed. Image: Gerald Wheeler |  |
EAB larva. Image: S. Ellis | ||
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