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Lab
10: Borers
(continued and agents of disease and rapid decline)(II.) Picture Sheet 3 of 4 |
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| Click on the pictures for larger view. | Click on the pictures for larger view. | ||
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Black locust with borer injury . Note dieback. |  |
Excelsior -like frass left behind by pine sawyer beetle. |
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Adult locust borer. Its long antennae put it in the group of beetles known as the longhorned beetles. |  |
Pine sawyer beetle larva in Scotch pine. |
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Declining stand of red pine. This is typical of boring injury to stands common duing drought years. Pattern may be somewhat attributed to pine wilt disease. |
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Nematodes in spiracle of pine sawyer beetle transmit clog vascular tissue and cause pine wilt disease. |
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