Reprinted from: Cockerell,T.A. 1903. New American hymenoptera, mostly of the genus Nomada. Ann. Mag. Nat. Hist. 64(3): 206-206
? .—Length 7-8 millim.
Form ordinary ; dark ferruginous, a very minute mark at
each lower corner of face, a spot on each side of second, third,
and fourth abdominal segments (sometimes only on the second,
or on the third and fourth and nearly obsolete on the second),
two faintly indicated discal spots on the fifth, and two or four
small spots on the ventral surface near the end yellow
; pattern
of black markings as in N. Lewisi, but there are three black
stripes on the mesothorax, the outer ones occasionally failing
posteriorly, and the base of the first abdominal segment is
black ; on the underside of the abdomen there are often three transverse stains, not amounting to distinct black bands;
mandibles simple ; flagellum entirely ferruginous ; third antennal
joint not very much shorter than fourth ; head transversely
oval; mesothorax very densely punctured ; tegulse
yellowish ferruginous, well punctured. Wings moderately
smoky ; stigma very dark ferruginous, nervures piceous.
Scutellum not obviously bilobate ; abdomen practically impunctate.
Very similar to N. Sayi, Rob., of the Eastern Slates.
<$ .—Length about 6^ millim.
Head and thorax black instead of ferruginous ; antennae
long, flagellum black above; narrow anterior margin of
clypeus, lower corners of face, and mandibles except tips dull
reddish yellow ; labrum the same colour, with the middle
blackish ; tubercles with a reddish spot, but no other marks
on thorax, which is quite hairy; abdomen with a black mark
on each side of second segment near base; yellow spots on
sides of second, third, and fourth segments, and subdorsally
on fifth and sixth ; apex strongly emarginate; on the ventral
surface basally is a large obcordate black patch. The anterior
and middle femora and tibige have a very distinct black
stripe behind, on the hind legs the black is more abundant
and more suffused.
Hah. Corvallis, Oregon: 5 ?, May 21. to June 7; 1 |
