This is a solid black bee closely tied to Evening Primroses. It is most active early in the morning and in the late afternoon when its host flowers are open. It has been found on both cultivated and wild primroses in human dominated landscapes.

Unless otherwise specified, specimen photos in the grid are courtesy of Margarita Miklasevskaja at PCYU with funding from NSERC-CANPOLIN.

Identification: A large, black species closely associated to Evening Primroses. Females have modified scopal hairs on their femurs to handle the oddly shaped pollen grains of Evening Primroses. Males have abundant yellow on their legs.

Similar Species: Compare the Ground-Cherry Sweat Bee (Lasioglossum pectinatum).

Global Status: Not Ranked

Vermont Status: Not Ranked


For more information, visit the following links:

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Living Atlas Species Page


Distribution: To see the global distribution, check out the iNaturalist account, and toggle the GBIF layer on the map.