Bufflehead Mason Bee Osmia bucephala Cresson, 1864  

There are 12 records in the project database.

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)

View All Images

View Bibliography

Use of images featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.