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California Mason Bee
Osmia californica
Osmia californica is a megachilid bee, or mason bee. Native to North America, the mason bees are important pollinators. O. californica generally emerges a little later in the spring than the better known orchard mason bee (O. lignaria). Like the orchard mason bee, O. californica is a solitary nester.
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Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Osmia californica in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 226664.