Lasioglossum (Dialictus) versans (Lovell)

Halictus versans Lovell, 1905a: 39 . Ƥ (3 misdet.).

Lectotype. Ƥ USA, Maine, Waldoboro (J.H. Lovell); [NMNH: 71573] designated herein. Examined.

Halictus (Chloralictus) consonus Sandhouse, 1924: 30 . 3.

Holotype. 3 USA, Connecticut, Colebrook, 1– 7.ix, (W.M. Wheeler); [NMNH: 26429]. Examined. Halictus (Chloralictus) brevibasis Cockerell, 1938a: 3 . 3.

Holotype. 3 CANADA, Saskatchewan, Lake Waskesiu, beginning of portage to Heart Lakes, 31.viii.1936 (T. & W. Cock-

erell); [AMNH]. Examined.

Evylaeus divergenoides Mitchell, 1960: 351 . 3. [new synonymy]

Holotype. 3 USA, Michigan, Mackinac Co., St. Ignace, 23.vii.1921 (T.H. Hubbell); [NMNH: 75204]. Examined

Taxonomy. Lovell, 1908: Halictus versans 3, p. 38 (description); Michener, 1951: Lasioglossum (Chloralictus) brevibase, p. 1112, L. (C.) consonum, p. 1113, L. (C.) versans, p. 1118 (catalogue); Krombein, 1958: Lasioglossum (Chloralictus) brevibase, p. 230 (catalogue); Mitchell, 1960: Dialictus versans Ƥ3, p. 427 (redescription, synonymy); Krombein, 1967: Lasioglossum (Dialictus) versans, p. 466 (catalogue); Hurd, 1979: Dialictus brevibasis, p. 1964, D. versans, p. 1972 (catalogue); Moure & Hurd, 1987: Dialictus versans, p. 137, D. brevibasis, p. 92 (catalogue); Gibbs, 2010b: Lasioglossum (Dialictus) versans Ƥ3, p. 337 (redescription, key, synonymy).

Diagnosis. Female L. versans can be recognised by the following diagnostic combination: metapostnotal rugae extending less than 2/3 distance to posterior margin, posterior margin distinctly extending beyond adjacent dorsal surface of propodeum; T1 declivitous surface with sparse erect pubescence but no acarinarial fan (Fig. 9 B); and apical impressed areas of metasomal terga impunctate. They are most similar to L. hemimelas, which has metapostnotal rugae reaching or nearly reaching the posterior margin (Fig. 133).

Male L. versans can be recognised by the following diagnostic combination: metapostnotal rugae reaching 2/3 distance to posterior margin, and penis valve with large dorsal crest.

Range. Nova Scotia, Prince Edward Island, west to Alberta, south to North Carolina. USA: CO, CT, IL, MA, MD, ME, MI, MN, NC, NH, NY, PA, SD, TN, VA, VT, WI. CANADA: AB, MB, NB, NS, ON, PE, SK.

DNA Barcode. Available. Multiple sequences.

Comments. Common.

To maintain stable usage of the name, the specimen indicated above is designated as the lectotype. The name-bearing type has lectotype labels from both Mitchell and Covell. No publication by either of these authors could be found that makes a valid lectotype designation.