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| A cross section of the thorax of a worker, showing the main thoracic trachea of each side. Trachea from healthy workers should be white with a silvery reflection. The ones here are infected with tracheal mites (Acarapis woodi) and has become brownish or black due to the scar tissue from mite feeding and the presece of many mites. Photo by Prof. M.V. Smith, University of Guelph.* Viewed: 2621 times. | | | |
| Two tracheal mites (Acarapis woodi) inside a worker trachea. Too many mites in there obviously blocks the airway of workers and workers become physically weaker and cannot fly as far and die earlier compared to healthy bees. Photo by Prof. M.V. Smith, University of Guelph.* Viewed: 1864 times. | | |
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Album: Disease & Pests 
1 
