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Extracted from: Cockerell T.D.A., New American Hymenoptera, mostly of the Genus Nomada pp. 35-37.
Nomada obscurella appears in this excerpt as the now synonymized Nomada fowleri.
FEMALE. —Length about 8.5 million.
Form ordinary, abdomen long-oval ; head and thorax
black, quite densely clothed with pale brownish-grey or dirty
white hair ; facial quadrangle broader than long ; narrow
anterior margin of clypeus and mandibles dull ferruginous;
mandibles simple, rather strongly curved ; the only yellow
about the insect is a small patch at the extreme lower corners
of face, next to the eyes ; scape black ; flagellum black above,
bright ferruginous beneath ; third antenna! joint long, almost
or quite as long as fourth ; scutellum neither prominent nor
bilobed ; tt guise shining ferruginous, not punctured. Wings
dusky, especially on apical margin, the light spot neither conspieuous nor well defined; nervures and stigma piceous
second submarginal cell very broad above, third narrowed
almost to a point. Legs ferruginous, the coxa3 and trochanters,
the anterior femora mere or less behind, the middle and hind
femora at base in front, and behind except at apex, and a
stripe on the outside of the anterior and middle tibia? black ; middle and hind tarsi blackish, the tips of the joints red;
hair on inner side of basal joint of hind tarsi very pale golden ; abdomen dark chestnut-red above and below, basal half of first segment black, the red intruding into the black as a
double notch.
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