Reprinted with permission from: Mitchell, T.B. 1960 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 141.
FEMALE—Length 6 mm.; head and thorax green, abdomen piceous, maculae lemon yellow; length of face very slightly greater than distance between eyes; eyes subparallel; cheeks subequal to eyes in width; lateral ocelli somewhat nearer the rather indefinite posterior margin of vertex than to eyes; foveae narrow and elongate, rather shallow and obscum; mandibles yellow with ferruginous tips; labrum dark; clypeus broadly convex, considerably broader than long, yellow except for a pair of longitudinal dark blotches on each side of middle; facial maculae quite extensive, rather broadly truncate above, terminated slightly above level of antennae; scape yellow anteriorly, flagellum testaceous beneath, fuscous above; lower portion of face somewhat shining, with very fine and rather close, indistinct punctures, upper portion and cheeks dull, without visible punctures; pubescence of head and thorax rather short and thin, entirely pale; posterior margin of pronotum with a pair of very small, lateral, yellow maculae, tubercles yellow, thorax otherwise green; tegulae yellowish-hyaline; wings whitish-hyaline, veins very pale yellowish and obscure, stigma piceous in large part, resulting in a conspicuous wing spot; femora narrowly yellow at tips, front and mid tibiae yellow anteriorly, front tarsi entirely so, legs otherwise piceous; scutum and scutellum somewhat shining, very minutely and rather closely punctate; pleura rather dull above, with sparse, minute and obscure punctures, becoming somewhat more shining and more closely punctate below; abdominal terga 2-4 with narrow, transverse, maculae which are rather widely separated medially and do not attain lateral margin of plates; basal tergum rather dull, very minutely, obscurely and sparsely punctate, the more apical terga becoming shining and somewhat more distinctly but still very minutely punctate.
MALE—Length 5.5 mm.; head and thorax green, abdomen brownish-piceous, maculae yellow; length of face very slightly greater than distance between eyes; eyes subparallel; cheeks subequal to eyes in width; lateral ocelli slightly nearer margin of vertex than to eyes; foveae inevident; mandibles, labrum, scape anteriorly, and entire face below a line slightly above level of antennae, yellow; flagellum yellow beneath, becoming piceous above; lower portion of face shining, with minute, obscure and rather sparse punctures, cheeks and upper part of face rather dull, punctures inevident; pubescence of head and thorax rather short and thin, entirely pale; posterior margin of pronotum largely yellow, extending onto and including tubercles; scutum yellow at extreme sides anteriorly, pleura with a small yellow spot beneath wing bases, and a large one posterior to front coxae; propodeum with a pair of small, lateral, yellow spots; tegulae yellowish-hyaline, with a rather large yellow spot; wings whitish-hyaline, veins pale yellowish and obscure, stigma largely piceous, resulting in a conspicuous wing spot; legs, including coxae, largely yellow, but femora and tibiae piceous in large part posteriorly, hind tarsi dark; scutum and scutellum shining, very minutely and quite sparsely punctate; pleura rather dull, with punctures more obscure; abdominal terga 2-5 with narrow, transverse, lateral maculae which are rather widely separated medially and do not attain lateral margin of plates; punctures of basal tergum hardly evident, the more apical terga becoming more shining, more distinctly and deeply although very finely punctate; sternum 6 deeply emarginate apically, width of emargination about a third total width of plate; sternum 7 with an extremely large, semicircular emargination which nearly divides the plate into two parts, angles on each side elongate and slender; apical portion of sternum 8 triangular, apex attenuated, slightly flexed and strongly compressed; gonocoxites swollen, produced and subtruncate apically, gonostyli slender and elongate, somewhat club-shaped apically, penis valves slender and elongate, equalling gonostyli in length, volsellae very short, partially divided to form a compressed cuspis and a short, poorly developed digitus.
DISTRIBUTION—Minnesota to Illinois and Michigan; June and July.
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