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 5 mm.; head and thorax green, abdomen piceous, with small yellow maculations; face slightly longer than distance between eyes above; eyes slightly convergent below; cheeks subequal to eyes in width; vertex rounded, rather narrow, lateral ocelli sub- equally distant from eyes and each other; f acial foveae shallow, elongate, slightly narrowed below; mandibles slightly curved, yellowish, somewhat darker at base and apex; labrum piceous; clypeus moderately convex, piceous, with a median and a pair of lateral yellow maculations; lateral facial maculae filling most of area between clypeus and eyes, extending narrowly up eye margin to level of antennae; scape entirely dark, flagellum piceous above, somewhat more brownish beneath apically; face above brassy green, somewhat shining, with minute, well separated punctures; cheeks somewhat shining, punctures exceedingly minute, obscure and quite sparse; pubescence of head and thorax rather short but copious, not hiding surface, pale ochraceous; pronotum with a pair of small, lateral, yellow maculae, thorax otherwise greenish; scutum and scutellum somewhat shining, punctures fine but distinct, rather widely separated and evenly distributed; pleura somewhat more olive green, less shining, punctures very minute and obscure; propodeum almost blue, shining, without evident punctures; tegulae pale yellowish hyaline; wings milky white, stigma pale yellow, veins practically colorless; legs dark basally, tarsi becoming yellow apically, pubescence entirely pale ochraceous; abdominal terga smooth but rather dull, apical margins narrowly depressed and impunctate, discs with rather fine and sparse, scattered punctures, terga 2 and 3 with a pair of small, transverse, rather widely separated, basal maculae.
MALE—Length 5 mm.; head and thorax bluish-green, abdomen piceous, without maculations; head very large, conspicuously wider than thorax, length about equal to distance between eyes, these subparallel; cheeks much broader than eyes, with a rounded, obscure angle opposite upper third of eye, and lower angle produced and rounded; vertex broad, lateral ocelli subequally distant from eyes and each other; foveae shallow and elongate, evident chiefly by the darker color; mandibles slender and elongate, slightly curved, apex of one reaching base of other when closed, yellow, with ferruginous tip; labrum swollen, yellowish-testaceous; clypeus very short but quite broad, brownish medially, becoming pale yellowish toward lateral apical angles, with rather close, deep and distinct, although fine, punctures; face brassy-green above, becoming somewhat yellowish-brown below, without definite maculations; scape entirely dark; vertex rather narrow, surface below ocelli becoming more shining, punctures very fine, well separated but hardly sparse, becoming more coarse and distinct below; cheeks more brownish, quite smooth, punctures hardly evident; pubescence of head and thorax rather short, entirely whitish; thorax entirely bluish-green, without maculations; tegulae yellowish-hyaline; wings milky-white, veins and stigma practically colorless; legs dark, tarsi becoming yellowish; abdominal terga smooth but rather dull, very finely and quite sparsely punctate, apical depressed rims short; apical margin of sternum 6 broadly emarginate; sternum 7 with a very deep, circular emargination; apical process of sternum 8 somewhat compressed, more or less keeled beneath, short pubescent; gonostyli compressed, rather short, acute apically, much shorter than the narrow, elongate, parallel-sided penis valves, volsellae compressed, digitus not evident.
DISTRIBUTION—Kansas and Arkansas to Florida; May and June.
Another subspecies, brachycephala Timberlake, has not been recorded from the eastern states.