About Osmia lignaria Say, 1837
Osmia lignaria, commonly called the orchard mason bee or blue orchard bee, is a megachilid bee. It builds nests inside natural holes and reeds, creating separate individual cells for its brood that are divided by mud partitions. Unlike carpenter bees, this species cannot drill its own holes in wood. O. lignaria is a widely used common species for pollination during early spring fruit bloom in the United States and Canada; a number of other Osmia species are also cultured for pollination use.
