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

Nomada composita FEM CFP
© Copyright Laurence Packer 2014 · 7
Nomada composita FEM CFP

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    Nomada composita – female – Holotype seen at MCZ in April of 2006. The type matches the description in Mitchell, the current DL guide, and the specimens in my collection. However, I have seen similar specimens identified as valida in other collections. The primary difference between valida and composita is the presence of 2 prominent lateral patches of yellow on T2-3.
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Nomada composita, female, antenna
© Mary Paul · 1
Nomada composita, female, antenna
Nomada composita, female, red propodeum
© Mary Paul · 1
Nomada composita, female, red propodeum
Overview
The male of this species has not been described in the literature. The information in this guide is based on a series of 8 specimens collected on 3 dates in mid-march on at 5 sites at Patuxent Wildlife Research Center, Laurel, Maryland. These specimens were associated with 3 females collected at the same sites during the same period, when almost no other Nomada were active.

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

FEMALE—Length 7-10 mm.; lateral ocelli somewhat nearer margin of vertex than to each other; cheeks slightly narrower than eyes, posterior margin sharply carinate; longer side of basal segment of flagellum somewhat shorter than segment 2, median segments considerably longer than broad; mandibles slender and simple; wings subhyaline basally, becoming rather deeply infuscated along outer margin and in marginal cell, with the usual three submarginal cells, 2nd and 3rd subequal anteriorly, a hyaline area just beyond the 3rd, veins testaceous to piceous, stigma testaceous, basal vein much basad transverse median; tegulae shining, punctures minute and sparse, somewhat closer along inner margin; posterior margin of scutellum only slightly depressed medially; front coxae not spinose; apex of hind tibiae with a row of three, of four short but rather robust, seta-like bristles; head and thorax largely ferruginous, face somewhat more testaceous below, a restricted area of black just above antennae, this extended narrowly below to lateral margin of clypeus, area between ocelli and posterior half of cheeks black; antennal scape and base of flagellum testaceous, flagellum otherwise testaceous beneath, somewhat brownish above; tubercles and tegulae more testaceous, scutum with a narrow, median, black line, pronotum laterally, mesopleura beneath, metapleura, and adjacent lateral surfaces of propodeum, black; posterior face of propodeum including the triangle largely ferruginous; front and middle coxae largely black, the hind coxae ferruginous, trochanters reddish-testaceous, femora rather narrowly piceous at base, becoming more testaceous apically, tibiae and tarsi testaceous, spurs pale yellow, the hind basitarsi somewhat darkened; tergum 1 of abdomen piceous over basal half, otherwise ferruginous, becoming somewhat darkened along rim, remaining terga ferruginous in large part, tergum 2 with a pair of widely separated, lateral, yellow maculae, tergum 3 with a similar but much smaller pair, terga 4 and 5 not maculated, sterna reddish-testaceous, more or less suffused with piceous; vertex and face above antennae coarsely, deeply, and quite closely rugoso-punctate, cheeks becoming more finely, shallowly and obscurely below; lower half of face distinctly and rather coarsely punctate on each side, the supraclypeal area finely and densely rugose, and clypeus with very fine and close punctures; scutum coarsely and deeply rugoso-punctate; punctures of scutellum deep and distinct, not quite as coarse; pleura coarsely reticulate above, becoming somewhat more distinctly and irregularly punctate beneath; propodeum finely and densely rugose, lateral faces becoming somewhat smoother below, triangle smooth over lower half, becoming rather coarsely striate along upper margin, median striations finer and rather vague; abdominal tergum 1 becoming impunctate laterally and basally, median punctures barely evident, discs of following terga minutely and rather closely punctate, apical margins rather broadly impunctate, invaded only slightly by very minute, scattered punctures, tergum 5 becoming somewhat more coarsely and irregularly punctate apically; pseudopygidium transverse, very short, forming the rather narrow, truncate, apical margin of tergum 5, densely covered with rather yellowish, suberect tomentum; pubescence very short and inconspicuous, largely pale, face with a few rather short but erect hairs, with rather dense pubescence on propodeum posteriorly, that on abdomen dorsally hardly evident, becoming somewhat more conspicuous laterally on the more apical terga; sterna with very sparse, scattered, somewhat more elongate, pale hairs, apex of sternum 5 with a pair of tufts of erect, curved, brownish hairs that converge medially.

TYPES—Holotype: Female, Colebrook, Conn. (no other data) [M.C.Z.]. Paratypes: 4 females, topotypical; 1 female, Presque Isle, Marquette, Mich., July 9, 1939. The Colebrook series was probably collected by W. M. Wheeler.

Paratypes are in the Museum of Comparative Zoology and in collections of R. R. Dreisbach and the author.


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