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 5 mm.; black; antennae and tegulae piceous; scape and collar entirely black; wings lightly infuscated, veins and stigma piceous; lateral face marks yellow, narrow, not completely filling space between clypeus and eyes, terminated acutely on eye margin at level of antennae; clypeus often with yellowish apical maculae; tubercles yellow; front and mid tibiae with small, basal, yellowish maculae, basal third of hind tibiae yellowish, legs otherwise dark; face rather narrow; eyes convergent below; facial foveae deep and distinct, linear, separated from eye by a slightly wider space, only very slightly divergent from eye at upper end; 2nd and 3rd segments of flagellum slightly shorter than broad, others, including the 1st, with length and breadth subequal; width of cheeks and eyes subequal in lateral view; front coxae rounded laterally; facial punctures below antennae shallow, obscure and rather sparse,
close deep and fine above antennae; thoracic punctures deep and distinct, close but not crowded on scutum, slightly more widely separated on scutellum and pleura; dorsal area of propodeuni rather extensive, coarsely striate; basal segment of abdomen shining, sparsely and minutely punctate, following segments dull, somewhat more closely punctate, but punctures very obscure.
MALE—Length 5.0-6.5 mm.; black; antennae and tegulae piceous; scape and tegulae with a yellow spot; collar entirely black; wings slightly dusky apically, veins and stigma brownish-f erruginous; mandibles and labrum black; maculations yellow, as follows: entire face below antennae, supraclypeal mark extending narrowly upward between antennae, lateral face marks broadly truncate at a point just above antennal fossa and slightly divergent from eye margin above, a small spot on each scape, on each tegula and tubercle, outer face of front tibiae, basal spot on mid tibiae, nearly basal half of hind tibiae, mid and hind basitarsi and spurs; front tarsi and apical segments of others reddish; eyes convergent below; cheeks slightly narrower than eyes in lateral view; scape very broadly dilated apically, apical breadth more than half its length; 1st and 2nd segments of flagellum shorter than broad, following segments about as broad as long; front coxac rounded laterally; thoracic punctures deep and distinct, close but not crowded on scutum and pleura, slightly more separated on scutellum; dorsal area of propodeum sloping, coarsely rugose; abdominal punctures fine and rather sparse but quite distinct, somewhat closer on the more apical segments.
DISTRIBUTION—Alaska to Nova Scotia and Newfoundland, the New England states, west to Minnesota, southward through the Southern Appalachians to North Carolina and Georgia; May to October.
FLOWER RECORDS—Acer apicatum, Aruncus, Ceanot hue, Chrysanthemum, Houstonia purpurea, Hydrangea, Malus, Oxypohis, Rhus, Rosa, Rubus and Taraxacum.