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USGS Bee Inventory and Monitoring Lab   cc-publicdomain

Osmia calla is a species of Hymenoptera in the family Megachilidae. They visit flowers of shaggy fleabane, Acmispon prostratus, threadleaf phacelia, and Monterey Bush-Mallow.

EOL has data for 8 attributes, including:

Known occurrences, collected specimens and observations of Osmia calla Cockerell 1897. View this species on GBIF