Lasioglossum (Dialictus) paradmirandum (Knerer & Atwood)

Gibbs, Jason, 2011, Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini), Zootaxa 3073, pp. 1-216 : 156

Lasioglossum (Dialictus) paradmirandum (Knerer & Atwood)

Dialictus paradmirandus Knerer and Atwood, 1966a: 886 . Ƥ 3.

Holotype. Ƥ CANADA, Ontario, Iona, Elgin Co., 1.ix.1963 on Solidago, (G. Knerer) , [ ROM: 83856]. Examined.

Taxonomy. Hurd, 1979: Dialictus paradmirandus , p. 1969 (catalogue); Moure & Hurd, 1987: Dialictus paradmirandus , p. 119 (catalogue); Gibbs, 2010b: Lasioglossum (Dialictus) paradmirandum Ƥ3, p. 237 (redescription, key).

Diagnosis. Female L. paradmirandum can be recognised by the following diagnostic combination: mesoscutum tessellate, punctures moderately dense between parapsidal lines (i=1–2d); mesepisternum tessellate-imbricate, shallow punctures visible; T1 acarinarial fan with dorsal opening; T1 declivitous surface with distinct coriarious microsculpture; T3–T4 with moderately dense tomentum partially obscuring surface and distinct apical fringes. They are most similar to L. fattigi and L. admirandum . Female L. fattigi have a more robust head, moderately sparse punctures on lower paraocular area (i=1–1.5d), weakly imbricate mesoscutum, and T3–T4 have sparse tomentum not obscuring surface and sparse apical fringe hairs. Female L. admirandum have metasomal terga polished without evident microsculpture on declivitous surface of T1.

Male L. paradmirandum are similar to females but may be further distinguished by head moderately elongate (length/width ratio = 1.03–1.04); flagellomeres long (length/width ratio = 1.69–1.83), pale brownish yellow ventrally; mesepisternum weakly reticulate dorsally, tessellate ventrally; metapostnotum rounded onto posterior propodeal surface, and apical impressed areas of metasomal terga impunctate. They are most similar to L. mitchelli and L. fattigi . Male L. mitchelli have metapostnotum sharply angled onto posterior propodeal surface, mesoscutum more densely punctate, and mesepisternum rugulose. Male L. fattigi have elongate heads (length/width ratio = 1.07) and mesepisternum imbricatetessellate dorsally.

Range. Ontario south to North Carolina, west to Wisconsin, Iowa. USA: IA, IL, IN, MD, MI, MO, NC, NY, PA, WI, WV. CANADA: ON.

DNA Barcode. Available. Multiple sequences.

Comments. Uncommon. See Gibbs (2010).