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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.; head, thorax and
apex of abdomen black, segments 1-3 of abdomen
ferruginous; head distinctly broader
than long, eyes very slightly convergent below;
clypeus quite broad and short, slightly
convex; labrum slightly broader than long,
slightly rounded or subtruncate apically,
smooth and shining, entirely black; mandibles
dark basally, becoming ferruginous toward
apex, with a distinct, subapical, inner tooth;
antennae black basally and above, flagellum
more piceous beneath apically, basal segment
of flagellum slightly broader than long, subequal
to pedicel, the 2nd segment very slightly
longer, the more apical segments slightly longer
than broad; lateral ocelli slightly nearer
each other than to eyes; face below ocelli rather
dull, punctures fine but deep, distinct
and very close, almost crowded, becoming
slightly more separate below, those on supraclypeal
area quite deep, distinct and close,
those on clypeus slightly more sparse; vertex
shining between eyes and ocelli, punctures
somewhat more sparse, posterior margin back
of ocelli obscurely roughened; cheeks rather
dull, substriate posteriorly, becoming somewhat
smoother and obscurely punctate toward
outer margins of eyes, the- lower surface
smooth and shining, wings subhyaline, with
the usual three submarginal cells, veins piceous
to brownish, stigma more piceous; tegulae
brownish-piceous; legs black in general, the
more apical tarsal segments somewhat paler;
scutum and scutellum shining, somewhat metallic,
punctures deep and distinct, rather
coarse but rather widely separated in general,
even between notaulices and tegulae, disc of
scutum with a shallow, indistinct, median
sulcus anteriorly; pleura very coarsely rugose
below, more finely rugose on hypoepimeral
area; dorsal area of propodeum coarsely and
completely striate, lateral faces irregularly
striate, posterior face more reticulate; abdominal
terga smooth and shining, basal tergum
with no evident punctures, 2nd and 3rd
with exceedingly minute and very sparse punctures
scattered across base, otherwise practically
impunctate, the impressed apical margins
broad and entirely impunctate.
DISTRIBUTION-Minnesota to Maine,
south to Tennessee and North Carolina:
May to August.
FLOWER RECORDS-Acer spicatunz,
Aruncus, Ceanothus, Hydrangea, Leucanthemum
and Rubus.
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