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| Links | Identification Summary: This is a very rare species. In the female of note is the very short F1 segment of the antennae, only about half as long as F2. The female also has a short, little, triangular stub of a projection at the end of the front coxae. Until recently, the male was unknown, however, a set of over 100 specimens from Dyke Marsh in Virginia (along the Potomac) yielded some males who are characterized by an extremely short F1, only about 1/3 the length of F2. Coloration otherwise similar to the female.
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Overview |
Reprinted with permission from: Mitchell, T.B. 1962 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 152.
FEMALE—Length 7.5 mm.; lateral ocelli slightly nearer margin of vertex than each other; cheeks considerably more than half width of eyes, posterior margin strongly carinate; basal segment of flagellum very short, not much longer than broad, and less than half length of segment 2, median segments considerably longer than broad; mandibles slender and simple; wings subhyaline basally, becoming lightly infuscated apically, with the usual three submarginal cells, 2nd and 3rd approximately equal anteriorly, veins testaceous, basal vein considerably basad of transverse median; tegulae shining between fine and rather close punctures, outer and posterior margins impunctate; posterior margin of scutellum quite deeply grooved medially; front coxae with triangular denticles posteriorly, but hardly spined; apex of hind tibiae with three or four testaceous bristles, the outermost elongate; clypeus, labrum and mandibles except tips, testaceous, a spot on supraclypeal area and the narrow malar space anteriorly, yellow, head otherwise black; antennal scape and basal segment of flagellum more testaceous, flagellum otherwise more reddish-testaceous; pronotal collar, tubercles, scutellum except anterior margin, and a rather vague, transverse stripe on mesopleura, yellow; tegulae yellowish-testaceous; thorax otherwise black; legs largely .testaceous, more or less tinged with yellowish on tibiae, spurs pale yellow; basal abdominal tergum largely reddish, tinged with yellow on each side of median area, terga 2-5 with conspicuous yellow maculae, otherwise more reddish, maculations 2 occupying most of disc laterally, rather widely separated medially, those on 3 somewhat narrowed and more widely separated; tergum 4 with a subapical transverse band which is narrowly interrupted medially and subinterrupted on each side, and 5 yellow along apical margin, more broadly so near mid-line; punctures of face above antennae, on vertex and on cheeks very coarse, deep and close, those below antennae much finer and more shallow, especially on clypeus; scutum and mesopleura very coarsely and deeply rugoso-subtruncate punctate, punctures becoming somewhat crowd-on pleura above, those on scutellum deep distinct, crowded only in part; posterior face of propodeum below coarsely rugosopunctate, lateral faces becoming rather smooth but dull toward the metapleura, triangle very coarsely rugoso-striate along upper margin, becoming more finely so below; basal abdominal tergum almost impunctate, the exceedingly minute, well separated punctures hardly visible; discs of 2-4 with minute and rather close punctures, the rather broad, impressed apical margins entirely impunctate; tergum 5 more deeply, distinctly, closely and coarsely punctate, especially toward apical margin; pseudopygidium transverse, very short, forming rather narrow, apical margin of tergum densely covered with suberect, silvery tomentum; pubescence extremely short, thin and obscure, somewhat more evident on thorax below and on posterior face of propodeum laterally, entirely pale where evident; sternum 5 with a pair of sublateral tufts of long, somewhat curved, yellowish hairs on each side
mid-line.
DISTRIBUTION—Rhode Island to Georgia, June and July.
FLOWER RECORD—Ceanothus.
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Updated: 2024-04-25 21:31:13 gmt
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