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 9-13 mm., breadth of abdomen 4-4.5 mm.; black, the mandibles with a small yellowish subapical spot; apical tarsal segments somewhat brownish, spurs pale testaceous, antennae and tegulae entirely black; wings subhyaline, faintly clouded apically, veins piceous to black; cheeks much narrower than eyes; clypeus but very slightly protuberant, its median length slightly less than distance between eyes below; eyes rather strongly convergent below; basal segment of flagellum about one and a half times the length of segment 2, shorter side of the latter about equal to the breadth; punctures of clypeus coarse, close and deep, those on labrum very close and fine medially, becoming quite sparse laterally; lateral areas of face between dypeus and level of antennae closely and quite finely punctate, the supraclypeal area narrowly impunctate medially, punctures becoming very minute and sparse above, where surface is shining between eyes and ocelli, median area below ocelli quite deeply and distinctly punctate; vertex minutely and closely punctate behind ocelli, becoming minutely and rather sparsely punctate laterally, cheeks shining, with minute and rather sparse punctures; scutum somewhat shining, punctures coarse and deep, quite sparse over posterior half medially, becoming much closer and finer laterally and anteriorly, those on scutellum somewhat finer and quite close; punctures of pleura quite close, coarse and deep throughout; posterior face of propodeum rather smooth but dull, punctures rather fine, very shallow, well separated, dorsal area becoming coarsely reticulate along upper margin, lateral faces dull and shallowly punctate, becoming narrowly shining below; basal abdominal tergum with rather coarse but shallow, well separated punctures across basal half, these becoming closer and deeper laterally, and nearly reaching the apical margin on each side, the rather broad median apical area entirely impunctate; terga 2 and 3 with close, rather fine punctures across basal half, those on 2 somewhat coarser and deeper than on 3, apical impressed areas smooth, with only scattered, exceedingly minute punctures evident; terga 4 and 5 densely and finely rugoso-punctate across base, apical areas obscured y pubescence; pygidium elongate triangular, apex narrowly rounded; pubescence of face and cheeks white, vertex with conspicuous, erect, black pubescence across top of head, but posterior margin white pubescent; scutellum entirely black pubescent and scutum largely so, with only a narrow anterior white pubescent area, the pleura and propodeum entirely white; coxae, trochanters and femora pale pubescent, the front tibiae and tarsi more fuscous pubescent, mid tibia with a fuscous, subapical patch on outer surface, tarsi with pale pubescence basally, becoming more or less infuscated apically; hind tibial scopa whitish, becoming somewhat infuscated at apex of basitarsi, the hairs quite densely plumose; basal abdominal tergum largely white pubescent across base, with some inconspicuous, short, suberect black hairs on disc at each extreme side; terga 2 and 3 with sub- median, slightly oblique, white fasciae, that on 2 interrupted medially, basal areas of discs with very short, inconspicuous, erect blackish hairs, and with rather sparse black hairs on apical impressed area; tergum 4 with a subapical, dense, white fascia separated from rim medially by a narrow band of fuscous tomentum, basal area with quite long and erect, black pubescence; terga 5 and 6 entirely black pubescent.
MALE—Length 8-10 mm., breadth of abdomen 3-4 mm.; black, clypeus entirely yellow, labrum black, and mandibles black except for an obscure, pale yellowish, subapical infusion; antennal flagellum testaceous beneath, brownish-piceous above; apical tarsal segments testaceous, spurs pale yellow; tegulae brownish; wings subhyaline, veins testaceous; impressed apical terga more or less yellowish-hyaline; cheeks about half width of eyes; clypeus very slightly protuberant, its median length about half distance between eyes below; eyes rather strongly convergent below; basal segment of flagellum very short, no longer than pedicel, segment 2 about four times longer than segment 1 and pedicel combined; punctures of clypeus rather coarse and close, somewhat obscured by the yellow coloration, those on lab- rum fine and close but quite shallow, somewhat more widely separated toward each side; face above clypeus quite deeply and distinctly punctate on each side, the punctures slightly separated, becoming more minute above where the surface is shining; vertex with close and rather distinct punctures behind ocelli, becoming sparse on each side, cheeks somewhat shining beneath the dense pubescence, punctures minute and rather well separated; scutum somewhat shining between quite coarse, deep and distinct punctures, these quite sparse over posterior half of disc, becoming somewhat closer laterally and anteriorly, those on scutellum about equal in size, well but not widely separated; pleura with deep, distinct, rather coarse punctures, these rather well separated medially, becoming somewhat closer anteriorly and below; posterior face of propodeum smooth but rather dull, punctures shallow and rather sparse, dorsal area becoming rather coarsely rugoso-punctate along upper margin. lateral faces quite dull, punctures quite close but shallow and irregularly scattered; basal abdominal tergum well covered with deep, distinct, rather coarse and well separated punctures, these becoming somewhat closer at extreme sides and nearly reaching the apical margin where they become minute and relatively sparse; discs of terga 2 and 3 with fine but deep and distinct punctures, these well separated across tergum 2, somewhat closer on 3, apical impressed areas with only exceedingly minute, widely scattered punctures; discs of terga 4 and 5 with fine and very close punctures basally, surface almost rugose, tergum 5 with a distinct but short, spine-like, lateroapical angle on each side, and tergum 6 with a corresponding triangular spine-like projection; pubescence of head, thorax and legs largely pale ochraceous, with only a slight amount of fuscous or blackish hairs on scutellum and on scutum posteriorly; basal abdominal tergum with copious, erect, pale ochraceous pubescence anteriorly, and some short, suberect, fuscous pubescence across apical half of disc; tergum 2 with a narrow, basal, pale fascia which is largely covered by the preceding tergum; terga 2-4 with narrow, pale ochraceous fasciae occupying the basal margin of apical impressed areas, the discs otherwise covered with suberect, fuscous or blackish pubescence; tergum 5 with a more nearly apical, pale ochraceous fascia, disc otherwise covered with rather elongate, blackish pubescence, becoming somewhat pale at each extreme side; median length of pygidial plate somewhat greater than basal width, carinate laterally, margins very slightly convergent to a rather abrupt subapical constriction, the apex narrowly truncate; sterna 7 and 8 and genital armature as in agilis (fig. 84).
DISTRIBUTION—Pennsylvania to Florida, west to Texas and Nebraska, July to November.
FLOWER RECORDS—LaBerge (1961)
lists species of Abutilon, Amphiachyris,
Aster, Bidens, Boltonia, Cassia, Chrysopsis,
Cirsium, Coreopsis, Helenium, Helianthus,
Heterotheca, Lythrum, Ratibida, Rudbeckia,
Silphium, Solidago, Verbena and Vernonia.