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 ) vierecki (Crawford) Halictus vierecki Crawford, 1904 : 97 . Ƥ. Holotype . Ƥ USA , New Jersey , Clementon, 6.vi.1830 [ ANSP : 10206]. Examined. [specimen missing head] Taxonomy. Graenicher, 1910 : Halictus vierecki 3, p. 158 (description); Viereck, 1916 : Halictus ( Chloralictus ) vierecki , p. 707; Michener, 1951 : Lasioglossum ( Chloralictus ) vierecki , p. 1118 (catalogue); Mitchell, 1960 : Dialictus vierecki Ƥ3, p. 429 (redescription); Krombein, 1967 : Lasioglossum ( Dialictus ) vierecki , p. 466 (catalogue); Dialictus vierecki , p. 1973 (catalogue); Moure & Hurd, 1987 : Dialictus vierecki , p. 139 (catalogue); Gibbs, 2010b : Lasioglossum ( Dialictus ) vierecki Ƥ3, p. 346 (redescription, key). Diagnosis. Female L . vierecki can be recognised by the following diagnostic combination: metasoma pale, brownish yellow; head, mesosoma ( Fig. 29 B), and metasomal terga largely obscured by dense, yellowish tomentum; apical half of clypeus brownish yellow; and legs extensively brownish yellow. Male L . vierecki can be recognised by the following diagnostic combination: size small ( 2.9–4.9 mm ), mesoscutal punctures dense (i<d), mesepisternal punctures distinct, metasomal terga reddish brown, and basal portions of T2–T3 distinctly impressed. Range. Manitoba and Ontario south to Texas and Florida. USA : FL, IN, MA, MD, MI, MN, NC, NE, NJ, NY, RI, SC, TX, WI. CANADA : MB, ON, PQ. DNA Barcode. Available. Multiple sequences. Comments. Common. Lasioglossum vierecki evidently has a preference for nesting in sandy soils. This species is believed to be solitary ( Knerer 1969 ; Packer 1993 ).