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Osmia ribifloris
This bee, Osmia ribifloris (on a barberry flower), is an effective pollinator of commercial blueberries and is one of several relatives of the blue orchard bee, Osmia lignaria. Similar in appearance, the blue orchard bee is also a successful commercial pollinator that is now being evaluated for use in a wider range of crops. USDA Photo by Jack Dykinga: http://www.ars.usda.gov/is/graphics/photos/may00/k5400-1.htm
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