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Nomada sobrina Mitchell, 1962
Life   Insecta   Hymenoptera   Apoidea   Apidae   Nomada
Subgenus: None


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Overview
Reprinted with permission from: Mitchell, T.B. 1962 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 152.

MALE—Length 9 mm.; lateral ocelli sub- equally distant from margin of vertex and each other; cheeks much narrower than eyes, posterior margin not carinate; antennal scape quite strongly swollen, apex deeply excavated and partially enclosing pedicel, basal segment flagellum much shorter than segment 2, median segments somewhat longer than broad; mandibles slender and simple apically; wings hyaline basally, becoming lightly infuscated apically, with the usual three submarginal cells, 2nd and 3rd about equal anteriorly, veins and stigma testaceous, basal vein much basad of transverse median; tegulae shining, punctures very fine and quite sparse toward outer margin; posterior margin of scutellum quite deeply grooved medially; front coxae not spinose; hind femora slender and unmodified; clypeus, labrum, mandibles, a small spot on supraclypeal area, rather extensive facial maculae, and cheeks below, bright yellow, eyes nearly encircled with yellowish-ferruginous, the band becoming ferruginous above; median area of face around antennae and ocelli, and posterior half of cheeks, black, this area reaching upper margin of clypeus; antennal scape bright yellow anteriorly, becoming piceous posteriorly near apex, flagellum testaceous beneath, upper surface more piceous toward base, more ferruginous apically; pronotal collar, tubercles, scutellum, and a transverse band on mesopleura, bright yellow, the mesopleural maculation bordered above with ferruginous; scutum bright ferruginous, with a broad median black band; mesopleura below and more narrowly above, metapleura and entire propodeum, black; tegulae yellowish-testaceous; coxae largely black, becoming somewhat yellowish toward apex, the trochanters testaceous, with piceous infusions beneath, front and mid femora piceous basally, otherwise testaceous, the hind femora more fully piceous, all tibiae and tarsi entirely testaceous, spurs pale yellow; abdominal terga chiefly ferruginous, tergum 1 piceous across basal half, 2 and 3 with extensive, lateral, yellow maculae, those on 2 nearly meeting medially, more widely separated on 3, tergum 3 more piceous, with small, lateral, yellow maculations that are widely separated, 5 and 6 more ferruginous, 5 with vague, subapical, lateral maculations, 6 with a rather extensive, median, yellow maculation; abdominal sterna piceous in part, the more apical plates becoming testaceous; face, vertex and cheeks above very coarsely and deeply rugoso-punctate, cheeks becoming somewhat more shallowly rugose below, lower part of face somewhat more finely- rugoso-punctate, maculated areas with very fine and sparse punctures; clypeus minutely, closely and vaguely punctate; scutum very coarsely and deeply rugosopunctate, punctures of scutellum deep but rather variable in size, and mesopleura rather coarsely reticulate above, becoming somewhat more finely but deeply and closely punctate below; posterior face of propodeum rather smooth but dull, lateral faces finely and irregularly rugose, triangle rather smooth below, becoming rather finely long striate across upper margin; discs of abdominal terga very finely and closely punctate, tergum 1 impunctate laterally and basally, impressed apical margins invaded by scattered, very minute punctures nearly to the narrowly impunctate rims; pubescence entirely pale, very short, somewhat more copious but largely appressed on face, somewhat more copious on thorax, partially hiding surface beneath, very short and hardly evident on abdomen dorsally, more evident toward apical impressed areas of the sterna, sternum 6 quite densely short pubescent toward apex; median length of pygidial plate very slightly longer than basal width, apex rather strongly narrowed and deeply emarginate, margins strongly carinate, surface with fine and very close punctures; exposed sternal plates unmodified; sternum 8 with a slender apical process; gonocoxites of genital armature as shown (fig. 107).

TYPE—Holotype: Male, Macomb Co., Mich., May 28, 1949 (R. R. Dreisbach) [author’s coll.].


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