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Extracted from: Robertson, C. (1897). North American Bees - Description and Synonyms. Transactions of the Academy of Science od St. Louis. Vol. 7. No. 14.
Black, shining, first three abdominal segments red; head
coarsely and closely punctured, less closely on clypeus and vertex; the latter with a conspicuous median tubercle reaching
from occiput nearly to anterior ocellus; labrum short and
rounded, black; mandibles except base rufolIs, strongly
dentate; antennae black; the head and thorax with thin pale
pubescence; rather close 011 collar :llld tubercles; mesonoturn
coarsely punctured, the punctures close anteriorly, spurse on
the disc; metuthorax, as well as the whole thorax beneath,
coarsely reticulated, the disc with semi-circular inclosure ;
wings except base dusky, teglilae anu nervures dark; legs
black, tibial spurs whitish. Length 7 mm.
This species is distinguished from S. confertus Say by the
punctures of the mesonotum being not" equally close set,"
by its entire labrum, dentate malldibles, and tuherculate vertex,
clouded wing~, etc. Other specimens may llot show the
red color of abdomen to be limited as indicated in tb e
description.
Extracted from: Mitchell, T. 1962. Bees of the Eastern United States, I. North Carolina Agricultural Experiment Station. 1-191.
FEMALE-Length 7 mm.; head and thorax
black, abdomen ferruginous, becoming piceous apically; head considerably broader than
long; eyes very slightly convergent below; clypeus quite broad, rather strongly convex; labrum broadly rounded, shining, entirely black;
mandibles with a distinct, inner, subapical
tooth, rather short, ferruginous apically, becoming blackened toward base; antennae blackish basally, more brownish-ferruginous apically, basal segment of flagellum very short,
much broader than long, 2nd somewhat longer,
3rd and following segments with length and
breadth subequal; lateral ocelli much nearer
to each other than to eyes; face below ocelli
somewhat shining between very coarse, deep
and quite close punctures, these becoming somewhat obscured below by rather dense pubescence, supraclypeal area closely and somewhat
more finely punctate, clypeus with fine punctures across upper margin, but these becoming
very coarse, deep and quite sparse apically;
vertex with a conspicuous, median tubercle
just posterior to and between the lateral ocelli,
somewhat shining on each side, with rather
sparse but coarse and deep punctures; cheeks
becoming rather coarsely reticulate, but lower
surface quite smooth, with a few, scattered,
obscure punctures; wings lightly infuscated,
with the usual three submarginal cells, veins
and stigma reddish-piceous; tegulae brownishferruginous posteriorly, becoming more clear
hyaline anteriorly; legs blackish; scutum and
scutellum shining between very coarse, deep
and distinct punctures, these well separated in
center of scutum, becoming somewhat closer
laterally and anteriorly, and well separated
over most of scutellum; pleura coarsely reticulate; dorsal area of propodeum coarsely rugoso-striate, lateral faces finely and irregularly
striate, posterior face more reticulate; abdominal terga smooth and shining, basal tergum
with scattered and rather sparse, fine punctures, terga 2-4 rather closely and deeply punctate across discs, punctures disappearing
toward apical margins, these rather broadly
yellowish-hyaline.
MALE-Length 7 mm.; entirely black; head
much broader than long; eyes slightly convergent below; clypeus convex; mandibles entirely
black; antennae entirely dark, scape short,
basal segment of flagellum very short, much
broader than long, segment 2 fully twice this
length, 3rd and following segments with basal,
densely pilose facets beneath, which become
successively more extensive on the more apical
segments, to nearly occupy the entire lower
surface of each segment; lateral ocelli very
small, subequally distant from eyes and each
other; lower portion of face obscured by dense,
white pubescence, clypeus partially exposed,
with coarse, deep and uniformly close punctures, those above antennae coarse, deep and
very close, vertex becoming coarsely reticulate, with a conspicuous, median tubercle just
posterior to the ocelli, the surface of which is
quite smooth and somewhat shining; cheeks
coarsely reticulate above, becoming somewhat
more striate posteriorly and below, lower surface relatively smooth but rather dull; wings
lightly infuscated, with the usual three submarginal cells, veins brownish-testaceous, stigma more brownish-piceous; tegulae piceous,
narrowly hyaline anteriorly, with a few fine,
rather close punctures; legs blackish; scutum
and scutellum somewhat shining, punctures
coarse and deep, slightly separated over central area of scutum, but becoming very close
between notaulices and tegulae, more rugose
along anterior margin, those on scutellumrather widely separated except at extreme
sides; pleura very coarsely reticulate; dorsal
area of propodeum indefinite, very coarsely
reticulate, lateral faces more striate, becoming
reticulate posteriorly, and posterior face
coarsely reticulate; abdominal terga somewhat
shining, punctures rather fine but deep and
distinct, well covering discs of most segments,
being quite close on all except the first, impressed apical margin of each rather narrow,
entirely impunctate, concolorous with the remainder of discs; gonostyli much exceeding
penis valves, robust, rather broadly expanded,
convex on outer surface, with an inner more
membraneous portion which is bordered on
each inner side by a sharp carina extending
to the tip and bearing a dense brush of setae
along the inner surface to the tip. (similar to
ignitus, fig. 117).
DISTRIBUTION-Illinois to the New
England states, south to Alabama and
Florida; April to September.
FLOWER RECORDS-Anethum, Chrysanthemum, Daucus, Fragaria, Hydrangea
and Rhus. Robertson (1929) records heraclei on Heracleum, Pycnanthemum, Solidago and Symphoricarpus.
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