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.; black; face somewhat longer than distance between eyes above; eyes subparallel; cheeks subequal to eyes in width; process of labrum about as long as broad, slightly narrowed apically, apex truncate; facial foveae shallow but distinct, narrowed below; lateral ocelli considerably nearer margin of vertex than to each other; median segments of flagellum about as long as broad; punctures very close and rather fine between ocelli and antennae, becoming somewhat more widely separated, coarse and shallow below antennae and on vertex laterally, rather close and coarse on cheeks, fine and close along edge of vertex medially, area between ocelli shining and nearly impunctate; pubescence of head and thorax entirely pale, very short and thin; tubercles obscurely reddened; tegulae yellowishhyaline, somewhat darkened apically; wings slightly infuscated, veins and stigma brownish to piceous, 2nd recurrent vein entering 2nd submarginal cell very much nearer apex than 1st does to base; legs entirely dark except for a very small yellowish spot at extreme base of front and middle tibiae; spurs yellowish; dorsum of thorax shining, punctures of scutum rather deep and distinct, well separated but not sparse medially, becoming quite close and fine anteriorly, punctures of scutellum very slightly coarser, well separated on each side of middle; pleura dull, rather coarsely and close1y but shallowly punctate anteriorly, punctures becoming more sparse and obscure posteriorly; apical margins of abdominal terga rather broadly and shallowly depressed, these areas somewhat reddened, relatively smooth, discs rather closely and finely punctate, those on basal tergum very fine and quite sparse, the surface shining, discal pubescence very short, thin and obscure, entirely pale, forming a pale brownish, apical fimbria on tergum 5.
MALE—Length 6 mm.; black; face slightly longer than distance between eyes above; eyes rather strongly convergent below; cheeks much narrower than eyes; clypeus yellow except for the black apical margin laterally; mandibles and process of labrum yellow, lateral portions of labrum black; area between clypeus and eyes yellow, this extending slightly above upper margin of clypeus along inner margin of eyes; process of labrum about as long as broad, very slightly narrowed apically, truncate; facial foveae small but deep and distinct, slightly narrowed below, terminating slightly above level of antennae; space between lateral ocelli and margin of vertex about equal to distance between them; median segments of flagellum about as long as broad; area between ocelli and antennae rather finely rugoso-punctate, punctures more distinct, widely separated and rather coarse below antennae, rather coarse, irregular and close on vertex laterally and on cheeks; pubescence of head and thorax entirely pale, very short and obscure; tubercles yellow; tegulae pale ferruginous-hyaline, somewhat darkened anteriorly; wings slightly infuscated, veins and stigma brownish to piceous, 2nd recurrent vein entering 2nd submarginal cell somewhat nearer apex than 1st does to base; femora blackish, basal third or fourth and extreme apex of tibiae yellow, otherwise blackish, tarsi and spurs yellow; dorsum of thorax shining, deeply and closely punctate, punctures becoming very close on scutum anteriorly, those on scutellum slightly more coarse, well separated on each side of middle; pleura dull and tessellate, punctures rather close and coarse anteriorly, becoming quite sparse and shallow posteriorly; apical margins of abdominal terga rather evenly and deeply depressed, these areas slightly reddened, discs rather closely and finely punctate, much more densely so toward base of discs, punctures rather sparse toward depressed rims, discal pubescence very short, thin and obscure, entirely pale; sternum 6 with a deep, circular, median emargination; wings of sternum 7 ovoid, bearing a few short setae at extreme tip; sternum 8 gradually narrowed to the narrowly truncate tip; apical portion of gonostyli slender and elongate, bearing a few short, inconspicuous setae toward apex laterally, subacute, rather abruptly flexed with respect to the robust basal portion; penis valves slightly exceeding tips of gonostyli; volsella conspicuous, strongly flattened, rounded apically.
DISTRIBUTION — Minnesota to the New England states and New Brunswick, south to North Carolina; August and September. One May record seems doubtful.
FLOWER RECORDS — Solidago. Robertson (1929) records asteris on 4 species of Solidago, 3 species of Aster, and on Rudbeckia triloba.
The types of both andrenoides and asteris have been examined, and there seems little doubt that they are the same.