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Extracted from: Fowler, C. (1899). California Bees of the Genus Nomada. Academy of Natural Sciences, Philadelphia Vol. 10 no. 6.
7 mm. Small, black, with brownish abdomen.
Male. Head black, densely punctured, clothed with white
pubescence, thin on vertex ; the lower anterior and posterior
orbits, the anterior margin of the clypeus and mandibles (except tips) yellow; flagellum black above, brown beneath,
second joint nearly as long as third. Thorax black, immaculate, densely and finely punctured, clothed with white pubescence, thin and short on metathorax ; wings dusky on narrow
apical margins; legs black, with short white pubescence,
longer on anterior and intermediate femora behind ; anterior
femora in front and behind yellow, above and beneath black
intermediate and posterior femora with a little yellow on the
apical portion beneath ; all the tibiae and tarsi yellow beneath,
obscurely so in the posterior pair. Abdomen smutty red,
pale on apical segments, clothed with thin white pubescence,
rather long and thick on apical segments ; the first segment is black except a narrow subapical reddish line ; the apical margin of the second, a subapical line on the third, and the base
of the remaining segments black ; the sides of segments 3-4,
with a large black spot, following which is an elongate,
oblique yellow spot. Venter black ; segments 2-5 with yellow
or reddish bands, more or less interrupted lateralli by large
black or brown spots, which are usually confluent with the
basal black of the segments.
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