Reprinted from: Cockerell,T.A. 1910. Some bees of the genus Nomada from Washington state. Psyche. 17:93-94
Length about 7 mm.; head and thorax black, densely and very coarsely
punctured, with white hair, which is dull and scanty above, clear white
and more abundant below, abundant and shining on lower part of
face; head transversely suboval, face very broad, eyes converging below;
lower corners of face, extreme lower margin of clypeus and base
of mandibles yellow; mandibles simple, apical half ferruginous with
the apex black or almost; labrum black, pallid around the margins;
scape stout, wholly black; third antennal joint shorter than fourth,
but more than half its length; flagellum long, rather thick, black above,
broadly ferruginous beneath; area of metathorax rugose; tegulx
dark ferruginous, coarsely rugoso.punctate; wings moderately dusky,
the large stigma and ncrvures dark ferruginous; b. n. going far
basad of t. m.; second s. m. broad above; legs red, the femora and
tibiae largely black behind, the posterior ones almost wholly so; hind
tarsi largely blackened; spurs white; abdomen narrow, light but
dullish red, with fine whitish pubescence giving it a silky appearance;
first segment with the basal half black, the other segments a little
blackened at extreme base; extreme side of segments to 5, with
successively smaller cream-colored spots; segments to 6 with also
subdorsal spots; venter with imperfect cream-colored bands, out of
which large pieces seem to have been cut at the sides. Allied to . etegantula Ckll. and somewhat to N. melliventris Cresson. Hab.m Wawawai, Washington State, May 1, 1909 (W. M.
Mann).
A female (date and locality the same) seems to belong here, but
may represent another species. It is only about 61 ram. long,
and differs from the male thus: Scape with a red spot at base;
third antennal joint almost as long as fourth; thorax with red
marks as follows: upper border of prothorax, tubercles, two fine
lines on mcsothorax two spots on scutellum, axillar spots, a line on
postscutellum, a spot beneath wings, and a transverse mark on lower part of pleura; also other minor details. There is a small
red spot above each eye. The upper side of the abdomen agrees
with that of N. angelarum Ckll.
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