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Varroa mites (Varroa destructor) on a drone pupa that was removed from its cell. *Viewed: 2953 times.
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No, this is NOT a staged picture! Last October some colonies were dying and being robbed. On close inspection they were having very severe cases of PMS (parasitic mite syndrome). Very few brood cells were left and when I opened these cells, some had more than 20 mites per cell! This one had like 12 mites just near the top. Most of the time the larvae were already dead inside cells (this one looks alive). MSU apiary. Oct 14, 2002. *Viewed: 2752 times.
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Another larva with 5 varroa mites on one side, I am sure a few ran away...
You can tell that the larva was dead by its abnormal coloration. MSU apiary. Oct 14, 2002. *Viewed: 2196 times.
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A varroa mite (Varroa destructor) and a "lesser mite" (as is called in China), Tropilaelaps clarae, side by side. Tropilaelaps jumped host from A. dorsata to A. mellifera in Asia. Hopefully it will never make its way to North America because in southern China it is sometimes more serious than varroa. *Viewed: 2102 times.
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A varroa mite (Varroa destructor) on the back of a worker bee. The bee on the bottom has her wings unexpanded -- a sign of varroa damage during her pupal stage. *Viewed: 2016 times.
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Varroa mites (Varroa destructor) floating in alcohol under a dissecting scope. *Viewed: 1772 times.
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Stages of varroa (Varroa destructor) mites. Younger ones on left, all white mites will die when a bee emerges out. The 2nd one from right would be able to live. Her cuticle will become redder after 2-3 more days of hardening. Beijing China. May 15, 2001. *Viewed: 2098 times.
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A varroa mite (Varroa destructor) on the back of a worker bee (the one in the center). *Viewed: 1784 times.
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Various stages of mites. The two rounder mites on the lower right are males. They never become red like the female and die soon after a worker or drone cell is open, perhaps due to debydration. May 15, 2001. *Viewed: 1873 times.
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