Lasioglossum (Dialictus) sheffieldi Gibbs 2010

Gibbs, Jason, Ascher, John S., Rightmyer, Molly G. & Isaacs, Rufus, 2017, The bees of Michigan (Hymenoptera: Apoidea: Anthophila), with notes on distribution, taxonomy, pollination, and natural history, Zootaxa 4352 (1), pp. 1-160 : 85-86

Lasioglossum (Dialictus) sheffieldi Gibbs 2010 (perdifficile group) (New state record)

County records: Alger.

Notes. Lasioglossum sheffieldi is a sand dune specialist, originally described from coastal areas of the Canadian Maritime Provinces and the western bank of the St. Lawrence River in Quebec ( Gibbs 2010b). Two additional specimens, one from a Manitoba dune system and the other from the west coast of Lake Michigan in Wisconsin, were examined but not included as paratypes due to their disjunct localities ( Gibbs 2010b). A long series of males and females were recently examined from Pictured Rocks National Lakeshore, which fills an important gap in the known distribution of this species, and points to the likelihood of additional unknown localities in other dune and lakeshore habitats, which may connect the inland populations to the populations on the Atlantic Coast.

Material examined. Alger Co.: Pictured Rocks National Lakeshore ( PWRC).