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 7 mm.; black; pubescence white, rather thin except on thorax laterally; length and breadth of head equal; clypeus slightly rounded, projecting about two- thirds below suborbital line; eyes only very slightly convergent below; cheeks subequal to eyes in width; lateral ocelli slightly nearer margin of vertex than to eyes; face above antennae dull, very densely and finely punctate, punctures of face below antennae quite sparse, the surface tessellate except on clypeus apically; area between eyes and ocelli densely punctate, vertex medially dull, obscurely sculptured, the cheeks finely striate above, becoming somewhat more coarsely so medially, but ventral portion quite smooth; scutum densely tessellate between rather fine and shallow punctures, these well separated in central portion of disc, becoming very close laterally; scutellum dull, punctures well separated on each side of a slight, median impression where punctures are closer; pleura with rather low but coarse reticulations above, becoming relatively smooth but densely tessellate below; dorsal area of propodeum somewhat shining, rather coarsely striate, posterior face quite smooth, bordered laterally with low but quite distinct carinae which reach the dorsal margin; wings subhyaline, veins and stigma testaceous; tegulae dark anteriorly except for the hyaline anterior border, becoming more ferruginous posteriorly; legs dark except for the apical, reddened, tarsal segments; hind basitibial plate small, triangular, acute; abdominal terga rather dull, punctures exceedingly minute and obscure, not visible except at very high magnification, terga 2 and 3 with thin and inconspicuous, apical fasciae slightly evident laterally, without distinct basal fasciae, discal pubescence extremely short, thin and entirely pale.
MALE—Length 6-8 mm.; black; labrum, apical half of clypeus and legs in part, yellowish; pubescence whitish, very short and thin; length and breadth of head equal; clypeus rather narrow and protuberant, projecting about two thirds below suborbital line; eyes rather strongly convergent below; mandibles simple, not greatly elongated, entirely dark; labrum transverse, without a median projection, entirely yellow; cheeks slightly narrower than eyes; lateral ocelli slightly nearer margin of vertex than to eyes; basal segment of flagellum very short, not much longer than broad, but somewhat longer than pedicel, the second and following segments elongate, fully twice as long as broad, ferruginous below, piceous above, face above antennae, dull, densely rugoso-punctate, becoming somewhat shining below between the fine and rather close punctures, these becoming more coarse and sparse on apical half of clypeus; area between eyes and ocelli dull, roughened, the vertex medially dull, with obscure transverse striations, cheeks finely striate; scutum tessellate between fine and quite close punctures, these somewhat separated near center posteriorly but very closely crowded laterally; scutellum dull, very closely punctate throughout, with a very slight median impression; pleura dull and rather finely rugose above, becoming somewhat more shining and with obscure reticulations below; dorsal area of propodeum rather coarsely rugoso-striate, posterior face coarsely reticulate, the lateral carinae rather indefinite; wings subhyaline, veins and stigma brownish-testaceous; tegulae rather dark ferruginous, with a broad, yellowish-hyaline, anterior border; legs dark basally, tibiae dark except for basal and apical yellowish spots, front tibiae yellowish anteriorly, all of tarsi yellowish; abdominal terga somewhat shining, punctures very fine but rather deep and distinct, scattered on basal tergum, but close basally on the following terga, becoming sparse or absent apically, with only very obscure and indefinite, basal, whitish fasciae evident laterally on terga 2 and 3; apical margin of sternum 5 straight, 6 rather broadly rounded; gonostylus short, truncate, only thinly pubescent, the ventral, retrorse lobe quite short, attenuated apically, thinly pubescent along outer side.
DISTRIBUTION — Newfoundland and Nova Scotia to Minnesota, south to Georgia; April to September.
FLOWER RECORDS—Acer, Aruncus, Azalea, Barbarea, Berteroa, hex, Melilotus, Rubus, Solidago, Taraxacum, Vaccinium and Viburnum. Brittain and Newton (1934) record it also on Kalmia, Malus and Prunus.