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Extracted from: Swenk, M. H. 1915. The University Studies of the University of Nebraska, Vol. 15.
Female. Length 8–9 mm. Dark red; upper clypeal and lateral supraclypeal
sutures, usually connecting with oval coalesced spots above insertion of
antennae, spot involving ocelli, cheeks behind, most of propleura, spots on
anterior mesosternum, sutures of mesopleura, metapleura and contiguous
areas on sides of propodeum to the spiracles, narrow anterior and pos
terior margins and a broader median stripe on mesoscutum, depressed sides
of mesoscutellum and metanotum, median band on enclosure of pro
podeum, more or less of coxae behind and femoral bases all around, black.
Antennae red, above with ends of the joints and a line on scape dusky,
joint 3 subequal to 4. Mesoscutellum prominent, distinctly bilobed.
Clypeus and supraclypeus finely and closely punctured, rest of head rather
coarsely and closely punctured especially on the vertex, mesothorax punc
tured like the vertex, enclosure of propodeum minutely reticulated, longi
tudinally wrinkled at base, its sides strongly curved inward. Tegulae punc
tured. Wings clear, the marginal cell apically and apical margin infus
cated, stigma dark brown, nervures fuscous, third submarginal cell usually
narrowed to a point above or almost so. Legs red except as noted.
Pubescence white, copious only on labrum and lower angles of propodeum.
Abdomen red, tergite I subimpunctate but following tergites finely punc
tured basally with a small trilobed black mark with the lateral lobes longest,
tergite 2 with oval yellow lateral spots, 3 with similar but smaller spots, ab
domen otherwise immaculate. Fringe of hair at apex of tergite 5 thin
and narrow, pygidial area covered with appressed hairs and pointed
apically.
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