Ilona L   cc-by-nc-sa

Osmia bucephala (Bufflehead Mason Bee) is a species of Hymenoptera in the family Megachilidae. They visit flowers of bird vetch, Spread-Fruit Golden-Banner, hobblebush, and Spirea douglasii.

EOL has data for 12 attributes, including:

Known occurrences, collected specimens and observations of Bufflehead Mason Bee. View this species on GBIF