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Lab
8: Defoliators (II)
Picture Sheet 2 of 4 |
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| Click on the pictures for larger view. | Click on the pictures for larger view. | ||
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Young sawflies hatch from eggs in spring. |  |
Late stage sawflies are up to an inch long. |
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The straw stage is the earliest visible symptom of the European pine sawfly. Note how the young larvae remove all but a slender straw when they defoliate pine needles. Each of the small black headed larvae near the thumb in the picture will grow up to an inch. |
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Sawflies will pupate and produce a leathery case. |
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Only straws are left of the leaf needles when the sawflies have not been controlled. |  |
The top larva is a caterpillar. Note how it has far fewer prolegs that the lower larvae, The white larva is a red headed pine sawfly. |
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