ven118lecc13a_(spidermites_08)

ven118lecc13a_(spidermites_08) - VEN 118 Spider Mites...

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VEN 118 Spider Mites
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Webspinning mites – Pacific mite
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Webspinning mites – Willamette mite
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Pacific mite, eggs Pacific mite, eggs Willamette mite, Willamette mite, eggs eggs
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Webspinning mites – Two-spotted
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Webspinning mites – Two-spotted
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Mite eggs are tiny, translucent and spherical. (Willamette eggs w/spine) (Pacific eggs w/o spine)
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Pacific Mite over-wintering Pacific Mite over-wintering population population
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Early Pacific mite damage Tip: Pacific spider mites feed between leaf veins leaving a round spot. This distinguishes them from Willamette mites that feed along the veins.
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Willamette Willamette mite spring mite spring movement… movement… and early and early damage. damage. Tip: Willamette spider mites characteristically feed along leaf veins. Notice that yellowing is along the veins in the photo above.
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Mite damage Mite damage Willamette Willamette mite mite damage damage Pacific Pacific mite mite damage damage
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Damage – Pacific mite Attacking the two spotted mite There will be webbing at the top of the vine’s shoots
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Willamette mite damage on Pinot noir.
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This note was uploaded on 09/29/2010 for the course VEN 81437 taught by Professor Larrywilliams during the Fall '10 term at UC Davis.

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ven118lecc13a_(spidermites_08) - VEN 118 Spider Mites...

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