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 7-8 mm.; lateral ocelli considerably nearer margin of vertex than to each other; cheeks nearly equal to eyes in width, posterior margin quite distinctly carinate; longer side of basal segment of flagellum slightly shorter than segment 2, median segments considerably longer than broad; mandibles slender and simple apically; wings subhyaline basally, sometimes distinctly yellowish, becoming rather deeply infuscated along outer margin and in marginal cell anteriorly, with the usual three submarginal cells, 2nd slightly broader than 3rd anteriorly, veins testaceous to piceous, basal vein considerably basad of transverse median; tegulae somewhat shining, punctures quite deep and distinct, rather close along inner margin, becoming sparse along outer margin; posterior margin of scutellum quite deeply depressed medially; front coxae not spinose; apex of hind tibiae with two or three elongate, seta-like bristles; head largely ferruginous, somewhat more yellowish below, eyes completely encircled with ferruginous, a restricted area between and above antennae, another between ocelli, and posterior half or more of cheeks, black; antennal scape more testaceous, flagellum brownish-testaceous below, more piceous above; thorax largely dark red, tubercles and tegulae more yellowish-testaceous, metapleura and narrow adjoining margin of propodeum black, scutum and posterior face propodeum with a median black line, mesopleura with some black beneath anteriorly; legs largely testaceous, femora more or less piceous except at apex, spurs pale yellow, hind basitarsi darkened; abdominal terga reddish in large part, tergum 1 piceous across base, 2 and 8 with lateral, widely separated, yellow maculations; abdominal sterna largely reddish, impressed apical margins of 1 and 2 more piceous, on 3 and 4 more yellowish; vertex, face above antennae, and cheeks above, very coarsely, deeply and closely punctate, cheeks below becoming more finely rugose; supraclypeal area and clypeus very finely rugoso-punctate, the punctures becoming more indefinite on clypeus apically, face laterally rather finely, closely and obscurely punctate; scutum, scutellum and mesopleura very coarsely and closely punctate, punctures becoming somewhat finer on pleura below; propodeum more finely and densely rugoso-punctate posteriorly, lateral faces becoming somewhat smoother, triangle dull and tessellate below, becoming rather broadly striate along upper margin; discs of abdominal terga with very fine, close punctures toward base, the broad apical impressed areas entirely impunctate, tergum 1 impunctate laterally and basally, tergum 5 becoming somewhat more distinctly but rather sparsely punctate apically; pseudopygidium transverse, extremely short, forming the truncate apical margin of tergum 5, densely clothed with suberect, silvery tomentum; pubescence extremely short and inconspicuous, white where visible, somewhat more dense on lower part of face, cheeks and on thorax posteriorly and below, quite dense on posterior face of propodeum, barely evident on abdomen dorsally, becoming somewhat more evident apically, apex of sternum 5 with a very small tuft of elongate, brownish hairs that converge medially.
MALE—Length 6-8.5 mm.; lateral ocelli subequally distant from margin of vertex and each other; cheeks considerably narrower than eyes, posterior margin subcarinate; antennal scape strongly swollen, apex deeply excavated and completely enclosing pedicel, longer side of basal segment of flagellum much shorter than segment 2, median segments slightly longer than broad; mandibles slender and simple apically; wings subhyaline basally, becoming faintly infuscated apically and in marginal cell, with the usual three submarginal cells, 2nd usually much broader than 3rd anteriorly, veins largely testaceous, basal vein much basad of transverse median; tegulae shining, punctures minute, rather close along inner margin, becoming very sparse toward outer margin; posterior margin of scutellum quite deeply depressed medially; front coxae not spinose; hind femora slender and unmodified; clypeus, supraclypeal area, labrum, mandibles and narrow lateral maculae, bright yellow, lateral maculae continuing over top of eye, somewhat more ferruginous above; vertex and median area of face above antennae black, with some black between supraclypeal mark and lateral maculations, cheeks largely black, with a narrow yellow band along eye margin below; antennal scape bright yellow anteriorly, becoming more or less piceous posteriorly, flagellum testaceous; pronotal collar, tubercles and tegulae more or less yellowish; scutum, scutellum and large median area of mesopleura more ferruginous, scutum with a median black line, mesopleura black below, metapleura and entire propodeum black; discs of abdominal terga 2 and 3 more testaceous, with broad, lateral, yellow maculations which are widely separated medially, impressed apical margins becoming somewhat more yellowish; tergum 1 piceous or black basally, more or less testaceous medially as a broad band, becoming somewhat darkened toward the rim; terga 4-6 more or less testaceous basally, becoming somewhat darkened toward the broadly impressed, yellowish-hyaline, apical margins; discs of abdominal sterna 2-4 testaceous, the broad, apical rims more yellowish-hyaline, sterna 1, 5 and 6 more piceous; vertex medially and face above antennae coarsely and deeply rugoso-punctate, becoming somewhat more finely so on cheeks and on vertex laterally; supraclypeal area and lateral areas of face closely and rather coarsely punctate, clypeus very finely and closely so; scutum, scutellum and mesopleura very coarsely rugoso-punctate, propodeum somewhat more finely rugose posteriorly and laterally, triangle somewhat smoother below but dull, becoming rather coarsely rugoso-striate along upper margin; discs of abdominal terga minutely and rather closely punctate basally, the punctures invading to some degree the impressed apical margins, but very minute and obscure; tergum 1 impunctate laterally and basally, and the more apical terga with somewhat coarser and more sparse punctures apically; pubescence entirely white, rather copious on face, on cheeks below, on thorax laterally and beneath, very fine and obscure on abdominal terga, becoming somewhat more conspicuous apically, sterna with very fine and sparse suberect hairs, sternum 6 becoming quite densely pubescent apically; median length of pygidial plate about equal to basal width, apex more or less deeply emarginate, margins carinate, surface quite closely and finely punctate; exposed sternal plates unmodified, sternum 6 strongly narrowed apically to the narrowly rounded apex; sternum 8 with a slender apical process; gonocoxites of genital armature as shown (fig. 107).
DISTRIBUTION—Minnesota to Maine, south to Virginia, April to July.
FLOWER RECORDS—Evonymus, Rhus and Rubus.