Submitted to: Journal of Melittology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/5/2014
Publication Date: 3/21/2014
Citation: Gibbs, J., Dumesh, S., Griswold, T.L. 2014. Bees of the genera Dufourea and Dieunomia of Michigan (Hymenoptera: Apoidea: Halictidae), with a key to the Dufourea of eastern North America. Journal of Melittology. 29:1-15. Interpretive Summary: Despite more than a century and a half of research on native North American bees much remains unknown. This is true even of the distributions of common bees. Two species of solitary bees are recorded from Michigan for the first time, Dufourea harveyi and Dieunomia heteropoda. This is the first time Dufourea harveyi has been recorded from the eastern United States. Information on the kinds of flowering plants visited by eastern species of Dufourea: Dufourea harveyi specializes on cinquefoil, Dieunomia heteropoda on sunflowers. A key to distinguish all the species of the genus Dufourea.
Technical Abstract: The halictid bees of the genera Dufourea Lepeletier de Saint Fargeau (Rophitinae) and Dieunomia Cockerell (Nomiinae) occurring in Michigan are reviewed. Two new records for Michigan are provided: Dufourea harveyi (Cockerell), new status, and Dieunomia heteropoda (Say). This is also the first published record of D. harveyi in the eastern United States. The occurrence of Dieunomia in southwest Michigan is the first record of the subfamily Nomiinae for the state. Information on the biology and distribution of each species is summarized. An identification key to the Dufourea of eastern North America is provided.