Lasioglossum (Dialictus) atwoodi Gibbs

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216 : 59-60

Lasioglossum (Dialictus) atwoodi Gibbs

Lasioglossum (Dialictus) atwoodi Gibbs, 2010b: 73 . Ƥ.

Holotype. Ƥ CANADA, Ontario, Algonquin P.P., Madawaska Lake, 7–19.vi.2007 (E. Proctor); [ PCYU]. Examined.

Diagnosis. Female L. atwoodi can be recognised by the following diagnostic combination: head moderately wide (length/ width ratio = 0.96–0.98); supraclypeal area wide, sparsely punctate (i=1–4d); mesoscutum tessellate-imbricate, punctation moderately coarse, moderately sparse on between parapsidal lines (i=1–2d); tegula reddish brown; mesepisternum strongly rugose; metapostnotal rugae nearly reaching the posterior margin; T1 acarinarial fan with dorsal opening; metasomal terga brown with the apical halves obscurely punctate; and T4 with scattered tomentum not obscuring surface. They are most similar to L. viridatum , which has denser supraclypeal punctures, metapostnotal rugae reaching the posterior margin, and T4 with sparse tomentum partially obscuring surface.

Male unknown.

Range. Nova Scotia west to Wisconsin, south along the Appalachian mountains to North Carolina. USA: IL, IN, MA, MD, ME, MI, NC, NH, NJ, NY, PA, WI. CANADA: NS, ON. DNA Barcode. Available. Multiple haplotypes.

Comments. Uncommon.