Lasioglossum (Dialictus) laevissimum (Smith 1853)

= Dialictus solidaginis Mitchell, 1960: 443 . (Michigan holotype)

Holotype. ♂ USA: Michigan: Marquette Co.: 20.vi.1955, R.R. Dreisbach (NCSU). Synonymy by Gibbs (2010b).

County records: Alger, Allegan, Antrim, Baraga, Barry, Cheboygan, Chippewa, Clinton, Delta, Dickinson, Gogebic, Houghton, Ingham, Iron, Kalamazoo, Keweenaw, Livingston, Luce, Mackinac, Marquette, Montcalm, Ontonagon, Otsego, Roscommon, Schoolcraft, St. Clair, Van Buren, Washtenaw, Wexford.

Notes. A primitively euocial ground-nester based on studies from Alberta and Nova Scotia (Brittain 1933; Packer 1992; Packer et al. 1989a).