AppearanceFEMALE—Length 11 mm.; head and thorax brilliant blue-green, abdomen piceous to black; mandibles testaceous, becoming reddish-piceous apically; apical third of clypeus blackish, base green, punctures well separated on the blackened part, close and rather fine on the basal, greenish portion; supraclypeal area shining, finely and rather sparsely but deeply punctate; face above antennae finely and densely rugose, becoming rather coarsely reticulate laterally and on vertex; cheeks coarsely striate; pubescence very pale yellowish dorsally on head and thorax, becoming more whitish below, but a few dark, inconspicuous hairs on dorsum of thorax; scutum distinctly but very finely and closely punctate over posterior middle, becoming densely rugose laterally and anteriorly; scutellum very finely and closely punctate anteriorly and in midline, somewhat shining on each side, punctures rather coarse and close laterally and posteriorly; pleura coarsely reticulate anteriorly, becoming rather finely so posteriorly, metapleura rather finely striate; dorsal area of propodeum finely rugoso-striate, becoming rather coarsely striate at extreme sides, lateral faces finely striate, posterior face with oblique, irregular, radiating striae on each side; entire legs, including coxa, piceous to black; tegulae brownish-yellow except for an inner greenish spot; wings subhyaline, veins and stigma brownish testaceous; abdominal terga quite closely but very minutely punctate, 2-5 with conspicuous, whitish, basal, tomentose fasciae, pubescence of discs otherwise obscure, subappressed, more fuscous.
MALE—Length 10 mm.; head and thorax brilliant blue-green, abdomen piceous, with yellow, basal bands; mandibles yellow, with ferruginous tips; labrum and apical margin of clypeus yellow, basal portion of clypeus green, very finely and closely but rather irregularly punctate, the apical yellow portion more coarsely so; supraclypeal area strongly protuberant, finely rugoso-punctate; face above antennae densely rugoso-punctate, becoming rather coarsely reticulate on vertex; cheeks rather finely and irregularly striate; scape yellow anteriorly, flagellum brownish-testaceous beneath, becoming piceous above; pubescence pale yellow on head and thorax above, becoming more whitish below; scutum densely and very finely punctate near center posteriorly, becoming more rugose laterally and anteriorly, scutellum more shining, finely and quite closely punctate anteriorly, becoming somewhat more coarsely so laterally and posteriorly; pleura coarsely reticulate anteriorly, becoming finely so posteriorly, metapleura irregularly striate; dorsal area of propodeum reticulate medially, becoming somewhat more regularly striate laterally, lateral faces irregularly striate to reticulate, posterior face irregularly reticulate; tegulae yellowish; wings nearly hyaline, veins and stigma brownish testaceous; coxa greenish in large part, trochanters black, legs otherwise largely yellow, but front and mid femora with basal, piceous blotches, hind femur with a small, apical blotch, mid and hind tibiae each with a narrow, posterior, piceous blotch; hind femora slender, with a ventral, subapical tubercle; basal tergum black basally and apically, with a rather narrow, yellow, median, transverse band, 2-5 with basal yellow bands, piceous discs very finely and closely punctate, pubescence of basal tergum entirely pale yellow, that on yellow areas of the following terga pale, that on the blacker discs subappressed, short and inconspicuous but largely piceous, that on 5 and 6 somewhat longer and pale in general; abdominal sterna 3 and 4 flattened and simple, 6 with a median, longitudinal, low ridge; ventral lobe of gonocoxite expansive, rounded, with an apical fringe; gonostyli with a slender, apical stylus, the tip of which is somewhat curved, with broad, median, dorsal and ventral lobes, the basal lobe inconspicuous, subcontiguous with the dorsal median lobe; penis valves very slightly grooved medially.
Andrena virescens Fabricius, 1775;
Andrena nigricornis Fabricius, 1793;
Halictus dimidiatus Lepeletier, 1841;
Halictus tricolor Lepeletier, 1841;
Agapostemon bicolor Robertson, 1893.
DistributionThis species is common in the northern United States and southern Canada where it occurs from coast to coast. It occurs as far south as the Gulf Coast but is rare in that region.
Washington and British Columbia to Quebec and Maine, south to Texas and Florida.
Some text fragments are auto parsed from Wikipedia.http://www.discoverlife.org/20/q?search=Agapostemon+virescens