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Hylaeus basalis (Basal Masked Bee) is a species of Hymenoptera in the family plasterer bees. They visit flowers of San Luis mariposa lily, beach strawberry, Common Dandelion, and Heart-leaved meadow parsnip.

EOL has data for 9 attributes, including:

Known occurrences, collected specimens and observations of Basal Masked Bee. View this species on GBIF