Martin Cooper   cc-by

Osmia caerulescens (Mason Bee) is a species of bees & apoid Wasps in the family Megachilidae. They visit flowers of Ramsons, blue bugle, catnip, and rockspray cotoneaster.

EOL has data for 7 attributes, including:

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