|
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 mm.; blue; face somewhat longer than distance between eyes above; eyes slightly convergent below; lateral ocelli subequally distant from eyes and each other, slightly nearer margin of vertex; clypeus convex, considerably produced apically, median area broadly incurved, margin narrowly shining and impunctate; median length of labrum about equal to basal width; dentition of mandible as shown (fig. 32) ; cheeks slightly broader than eyes; wings subhyaline, apical margin becoming lightly but abruptly infuscated, 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 of head and thorax yellowish-white, that on abdomen, including scopa, white, the interocellar area with a distinct row of elongate, downcurved hairs which meet a strong tuft of suberect, pale hairs between antennae, those on clypeus downcurved, resulting in a pattern peculiar to this species; pubescence of basal abdominal tergum rather long and copious, quite short but erect and clearly evident on discs of the following terga, that on 6 subappressed and very short; hypostomal carinae angulate opposite apex of labrum; punctures rather fine and close in general, but deep and distinct, close over most of head, face rather coarsely rugose below ocelli; scutum and scutellum shining, punctures close except across posterior half of scutum, quite distinct but close on scutellum; pleura rather dull, with subcontiguous, rather shallow punctures; lateral faces of propodeum somewhat smoother but with close, minute punctures, these becoming very obscure on posterior face, dorsal area velvety, upper margin very narrowly and irregularly striate; abdominal terga shining, punctures fine, quite close but slightly separated medially on 1-5, becoming quite close at extreme sides, uniformly, densely crowded on 6, apical margins slightly and narrowly depressed, finely and closely punctate nearly to the rims.
MALE — Length 7-8 mm.; head and thorax dark olive-green, abdomen somewhat more bluish-green; face considerably longer than distance between eyes above; eyes somewhat convergent below; lateral ocelli subequally distant from eyes and each other, slightly nearer margin of vertex; clypeus convex, apical margin somewhat produced, nearly straight, narrowly shining and impunctate medially; labrum about as long as basal width; mandibles distinctly bidentate; cheeks subequal to eyes in width; wings subhyaline, faintly clouded apically, 2nd recurrent vein reaching 2nd submarginal cell much nearer apex than 1st does to base; tarsal segments slender and simple, anterior margin of hind basitarsus with a very low, submedian tubercle, mid and hind spurs piceous; pubescence of head and thorax yellowish-white, that of abdomen more distinctly white, quite copious on lower half of face, on cheeks, over most of thorax, and to some degree on basal abdominal tergum; punctures quite deep and distinct, rather close and coarse in general, becoming rather fine and densely crowded around antennae and over lower portion of face, shallow but subcontiguous of cheeks below, subcontiguous over most of scutum but becoming slightly separated medially toward posterior margin, those on scutellum distinctly but not widely separated, quite coarse and deep; pleura dull, with rather shallow, subcontiguous punctures, these slightly separated just below wing bases; lateral faces of propodeum rather dull, surface finely roughened but hardly punctate, posterior face rather dull and obscurely roughened, dorsal area velvety, upper margin rather broadly and finely striate; abdominal terga shining, punctures rather fine and close basally, becoming somewhat more distinctly separated apically, margins rather broadly depressed, invaded by punctures nearly to the narrowly shining and impunctate rims; tergum 6 with a rather shallow but distinct median apical emargination, 7 narrowly produced medially, deeply emarginate, the two resulting projections acutely triangular; sternum 2 broadly outcurved apically, margin rather narrowly yellowishhyaline, smooth and impunctate, largely covering sternum 3 and base of 4, 3 broadly in- curved apically, median area occupied by a tuft of convergent setae (fig. 33), 4 rather broadly produced medially, this area rather densely setose and with a narrow, median, non-setose line; sterna 5-8 retracted, submembranous, 8 triangularly pointed apically; genital armature resembling that of albiventris, (fig. 35), apex of gonocoxite as shown (fig. 31).
DISTRIBUTION — North Dakota to Ontario and the New England states, south to Colorado, Tennessee and North Carolina, March to July.
FLOWER RECORDS — Pent stemon, Rubus and Trifolium. Additional records by Robertson (1929) include Blephilia, Dianthera, Gillenia, Hypoxis and Lithospermum
|
