Reprinted from: Cockerell,T.A. 1903. New American hymenoptera, mostly of the genus Nomada. Ann. Mag. Nat. Hist. 64(3): 206
2 .—Length 8 millim.
Like N. oregonica, but the third antennal joint is very
much shorter than the fourth and the first abdominal segment
above has black only at the sides of basal half, never in the
middle. The anterior and middle femora and tibiae are red,
entirely without markings, but the hind femora have a black
stripe behind. The ventral surface of the abdomen is red,
wholly without transverse blackish stains. Mandibles simple.
Hah. Corvallis, Oregon : 6 $ , May to June 7.
Received from Mr. Viereck.
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