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Extracted from: Sandhouse G. A. New North American Species of Bees Belonging to the Genus Halictus (Chloralictus). No. 2532 - Proceedings U.S. National Museum. Vol. 65, Art. 19.
In this excerpt, Lasioglossum molle is known as the now synonymized Halictus mollis.
Male.—About 5.5 mm. long; head and thorax blue-green; abdomen
black; pubescence white. Facial quadrangle longer than broad; orbits
converging slightly below; face sparsely pubescent; front closely
punctured; the punctures more sparse below; clypeus brassy, the
lower one-third black; antennae dark, second and third joints of equal length; flagellum dark, hardly paler beneath; mandibles dark;
red at the apex. Thorax with quite dense, long hairs; mesothorax
polished; punctures on the mesothorax about the diameter of a puncture apart, more sparse on the disk; scutellum closely punctured . two polished spots on the disk; disk of propodeum long, with irregularly anastomosing rugae reaching the apex, which is polished; meso
pleurae and sides of propodeum coarsely punctured, brassy; trunca,
tion not sharply defined laterally; tegulae very pale; impunctate. Abdomen ovate, polished; segments punctured, sparsely pubescent.
Wings clear; anterior wing 4 mm. long; stigma and nervures pale
testaceous; second submarginal cell much higher than broad, receiving the first recurrent nervure near the apex; third submarginal
broad, more than twice as long as the second on marginal. Legs
black; knees somewhat reddened; tarsi bro^vnish, with yellowish hairs.
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