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 ) bruneri (Crawford) Halictus Bruneri Crawford, 1902a : 237 . Ƥ. Holotype . Ƥ USA , Nebraska, West Point, 10.vi.1901 (J.C. Crawford); [ NMNH : 8231]. Examined. Halictus brimleyi Crawford, 1932 : 71 . Ƥ. Holotype . Ƥ USA , North Carolina, Bryson City , 24.v.1923 on Ilex opaca (J.C. Crawford) ; [ NMNH : 40306]. Examined. Taxonomy. Michener, 1951 : Lasioglossum ( Chloralictus ) bruneri , p. 1112 (catalogue, synonymy); Mitchell, 1960 : Dialictus bruneri Ƥ3, p. 384 (redescription); Krombein, 1967 : Lasioglossum ( Dialictus ) bruneri , p. 462 (catalogue); Hurd, 1979 : Dialictus bruneri , p. 1964 (catalogue); Moure & Hurd, 1987 : Dialictus bruneri , p. 92 (catalogue); Gibbs, 2010b : Lasioglossum ( Dialictus ) bruneri Ƥ3, p. 76 (redescription, key). FIGURE 74. Distribution map of Lasioglossum batya (stars), L . ceanothi (circles) and L . cephalotes (squares). Diagnosis. Female L . bruneri can be recognised by the diagnostic character of hypostomal carinae widely divergent ( Fig. 11 B) and strongly produced distally. They may be further distinguished by the following: size large, head and mesosoma coarsely sculptured, and protrochanter excavated anteriorly. They are very similar to L . reticulatum , which has less widely divergent hypostomal carinae, which are not produced distally, and normal trochanters without anterior excavation. Male L . bruneri can be recognised by the following diagnostic combination: mesoscutum rugose anteriorly, mesepisternum coarsely rugose, and tibiae and femora brown. They are most similar to L . reticulatum , which has the tibiae and femoral apices and bases reddish brown. Male L . cressonii are also similar but have distinct mesoscutal punctures anteriorly and less clypeal pubescence, not obscuring the surface. Range. Ontario south to Florida, west to Nebraska. USA : GA, IL , IN, KS, MA, MD, MI, NC, NE, NM, NY, SC, TN, TX, VA, WI, WV. CANADA : ON. DNA Barcode. Available. Multiple sequences. Comments. Common. Some females of L . bruneri , particularly in the Midwest, do not have strongly produced hypostomal carinae. These have sometimes been mistaken for L . reticulatum .