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Reprinted with permission from: Mitchell, T.B. 1962 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 152.
FEMALE—Length 12 mm.; head and thorax blackish, with blue-green tints, abdomen deep blue; face somewhat longer than distance between eyes above; eyes very slightly convergent below; lateral ocelli subequally distant from eyes and margin of vertex, slightly nearer to each other; clypeus quite strongly convex, considerably produced apically, margin nearly straight, narrowly polished and impunctate; dentition of mandible as shown (fig. 32); cheeks much broader than eyes; wings lightly infuscated, somewhat more deeply along apical margin, 2nd recurrent vein reaching 2nd submarginal cell much nearer apex than 1st does to base; tarsal segments simple and unmodified, mid and hind spurs piceous; pubescence largely yellowish-white on head, thorax and basal segment of abdomen, with only a few darker hairs on clypeus apically, discal pubescence of abdominal terga very thin and sparse, short but erect, dark on tergum 5, pale and subappressed on 6; scopa entirely fuscous; punctures quite close and fine over most of head and thorax, but somewhat separated on vertex laterally, in center scutum posteriorly, and along anterior portion of scutellum, pleura rather dull, punctures fine and close but rather shallow and indistinct, lateral faces of propodeum somewhat smoother but dull, dorsal area of posterior face velvety, becoming narrowly and obscurely substriate along dorsal margin; abdominal terga shining, punctures deep and distinct across base of each plate, somewhat separated but quite close in general, becoming somewhat more sparse and fine apically, margins quite broadly depressed, but with fine, rather sparse punctures nearly to the rims, tergum 6 densely and very finely punctate.
MALE — Length 9-10 mm.; bluish-green; face considerably longer than distance between eyes above; eyes slightly convergent below; lateral ocelli subequally distant from eyes and margin of vertex, somewhat nearer to each other; clypeus convex, somewhat produced apically, margin nearly straight, narrowly polished and impunctate; median length of labrum not quite equal to the basal width; mandible distinctly bi-dentate; cheeks about equal to eyes in width; wings subhyaline, faintly infuscated apically, recurrent veins reaching 2nd submarginal cell subequally distant from base and apex; mid tarsal segments 2-4 strongly compressed, somewhat dilated apically, hind basitarsus not tuberculate; mid and hind spurs piceous; pubescence yellowish- white, without dark intermixture, dense and elongate between antennae and on lower part of face, on cheeks, over most of thorax, and on basal abdominal tergum, short thin and suberect on discs of the following terga; punctures rather fine and close but quite deep over most of head and thorax, slightly separated on vertex laterally, in center of scutum posteriorly and over anterior portion of scutellum, pleura rather dull, with dense and fine punctures, propodeum smooth but rather dull, punctures minute and obscure, dorsal area of posterior face velvety, becoming irregularly finely striate along dorsal margin; abdominal terga 1-5 shining, punctures fine and rather close but not contiguous, apical margins depressed and rather broadly polished and impunctate; tergum 6 minutely and rather sparsely punctate apically, margin without a distinct emargination; tergum 7 rather narrowly produced and with a very small and shallow, median emargination; sternum 2 broadly rounded apically, covering sternum 3 in large part and •base of sternum 4, 3 with a narrow, median emargination which is occupied by rather short setae which do not completely converge, 4 rather broadly produced apically, this area rather densely and uniformly setose, 5-8 entirely retracted, 8 triangularly acute apically; penis valves of genital armature slender and much shorter than gonocoxities, apex of gonocoxities as shown, (fig. 31).
DISTRIBUTION — Minnesota to the New England states, south to West Virginia, June to August.
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