Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini) Author Gibbs, Jason text Zootaxa 2011 2011-10-28 3073 1 216 journal article 31531 10.5281/zenodo.1049595 1a985cc7-af57-45e9-a988-c3beda3c15b4 1175-5326 1049595 B5AF6DF4-D3A7-4942-A94F-CC051D8074CF Lasioglossum ( Dialictus ) subversans (Mitchell) Dialictus subversans Mitchell, 1960 : 419 . Ƥ. Holotype . Ƥ USA , Michigan, Otsego Co., 26.iv.1944 (R.R. Dreisbach); [ NCSU ]. Examined. Dialictus perpunctatulus Knerer and Atwood, 1966a : 884 . Ƥ 3. Holotype . Ƥ CANADA , Ontario, Arctic Watershed, Timiskaming District, 21.vi.1961 on Fragaria , (G. Knerer) ; [ ROM : 83912]. Examined. Taxonomy. Krombein, 1967 : Lasioglossum ( Dialictus ) subversans , p. 466 (catalogue); Dialictus perpunctatulus , p. 1970, D . subversans , p. 1972 (catalogue); Moure & Hurd, 1987 : Dialictus perpunctatulus , p. 121, D . subversans , p. 132 (catalogue); Gibbs, 2010b : Lasioglossum ( Dialictus ) subversans Ƥ3, p. 309 (redescription, key, synonymy). Diagnosis. Female L . subversans can be recognised by the following diagnostic combination: head wide (length/ width ratio = 0.94–0.97); supraclypeal area strongly brassy; mesoscutum imbricate, punctures moderately dense between parapsidal lines (i=1–1.5d); mesepisternal punctures distinct but irregular; metapostnotum with weak longitudinal rugae, not reaching rounded posterior margin; and metasomal terga brown, with sparse tomentum, apical punctation very obscure. They are most similar to L . foveolatum , which has a strongly convex supraclypeal area and wide parapsidal lines. Male L . subversans can be distinguished from all other eastern USA L. ( Dialictus ) by the very long and dense scopalike hairs on S2–S3 and apicolateral portions of S4–S5 ( Fig. 35 A). Range. Nova Scotia west to British Columbia . USA : ME, MI. CANADA : AB, BC, NB, NS, ON, PE, PQ, SK. DNA Barcode. Available. Multiple sequences. Comments. Rare. Lasioglossum subversans seems to have a boreal distribution.