Bufflehead Mason Bee Osmia bucephala Cresson, 1864  

There are 13 records in the project database.

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A Bufflehead Mason Bee in Frederick Co., Maryland (5/27/2018). Photo by Katie Woods. (MBP list)

Osmia bucephala female, Allegany Co., Maryland (5/2012). Photo by USGS PWRC. (MBP list)

A female Bufflehead Mason Bee in Baltimore City, Maryland (5/9/2009). Determined by John S. Ascher/BugGuide. Photo by Thomas Wilson. (MBP list)

A Bufflehead Mason Bee in Frederick Co., Maryland (5/21/2018). Verified by BugGuide. Photo by Katie Woods. (MBP list)


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