Reprinted from: Broemeling, D.K. 1988 A Revision of the Nomada Subgenus Nomadita of North America (Hymenoptera: Anthophoridae). The Pan-Pacific Entomologist 64; 329-330 |
Nomada (Holonomada) mutans Cockerell, 1910. Psyche 17:91-92,98.
Holotype, female: "No. 13192: W. M. Mann, Pullman, Wash., VIII:9:08". Type Depository, United States National Museum.
Diagnosis: Differs from placida, timberlakei, and verecunda by having white in¬stead of yellow maculations. Differs from aquilarum by having the apex of the pro-coxae smoothly rounded, a flattened, sparsely punctate, shiny scutellum, and the ab¬sence of prominent supraspiracular ridges. Differs from snowii by the lack of rufo-ferruginous markings on the legs which contrast strongly with the thorax. If the legs of mutans are light brown to ferruginous, the propodeum and thorax are usually the same color.
Male: Length 6.3-7.7 mm, forewing length 4.5-5.9 mm, hindwing length 3.5-4.0 mm; very similar to female.
Female: Length 5.9-8.9 mm, forewing length 4.0-5.9 mm, hindwing length 3.0-4.7 mm; scape with dense shallow punctures, sparse posteriorly, IPS smooth, shiny; IOD 0.35 mm, OOD 0.34 mm, MLOD 0.16 mm, MOD 0.17 mm, MOOM 0.39 mm; pre-occipital ridge acutely angulate; subapical transverse ridge of labrum broken, with distinct median nipple; acetabular carina reduced to small basal; lamella; pre-lobar carina distinct, gradually sloping; pronotal ridge strongly angulate, depressed medially; scutal punctures with rims rounded, not angulate; tegulae sparsely punc¬tate with highly polished IPS; metanotum not flattened medially, not laterally ex¬panded; supraspiracular ridges not prominent; metapleuron sparsely punctate; pro-coxal spine rudiments lacking; metasternum ridged medially; hind tibial apex with 5 heavy, dark bristles in an overlapped double row; forewing with 3 submarginal cells: COLOR: antero-apical patch on scape, clypeus (except basal margin), labrum, basal half of mandibles, malar space, sides of face to apex of scape, ring behind compound eye to same height, pronotal ridge and lobes, tegulae in part, scutellum, metanotum, crescent behind pronotal lobe, anterior and posterior mesopleural triangles, apical patches on meso- and meta-sternum, spot on pro-coxae, larger on mid- and hind-coxae, ventral apical stripe on pro-femora, basal and apical bands on tibiae, apical band on mid-femora, spot on hind-femora, incomplete apical and basal bands on mid- and hind-tibiae, complete transverse bands on tergum 1-5, transverse bands on sterna 2-4, white; remainder of body piceo-fuscous.
Discussion: Nomada mutatis contains the smallest North American Nomadita. This species ranges from the northern coastal areas inland to Montana and Utah. The black integument is brownish in some specimens. Specimens from Utah show a re¬duction in the amount and extent of white maculations, including an interruption of the abdominal bands, which makes them strongly resemble N. aquilarum.
Reprinted from: Cockerell,T.A. 1910. Some bees of the genus Nomada from Washington state. Psyche. 17:91-92
Length about 7 mm.; black with creamy-white markings, and hardly
any hair; anterior coxm without spines; head and thorax strongly
punctured; head broad, with the following light markings: lateral
marks, broad below, with a little notch on each side near to black
part of clypeus, extending upward above level of antennae, ending in
a rather obtuse point, a little away from orbital margin; lower two
thirds of clypeus, the margin of the light area broadly angled in
the middle above; labrum, but the lower half suffused with reddish;
basal half of mandibles (apical half reddish); and narrow posterior
orbits; mandibles simple; second joint of labial palpi much less than
half length of first; scape blackish behind, reddish in front, with an
obscure yellowish mark; flagellum thick, dark reddish above, light
ferruginous below, first joint paler; third antennal joint conspicuously
longer than fourth; mesothorax shining between the strong punctures;
light markings of thorax as follows: upper margin of prothorax,
tubercles, tegule, scutellum, postscutellum, and a triangular spot on
anterior part of pleura; scutellum little elevated; wings dusky, stigma
ferruginous, nervures fuscous; t. m. a short distance basad of b. n.;
first r. n. reaching second s. m. well beyond middle; legs black, with
creamy-white spots on hind Coxe, apices of femora and apices and
bases of tibim; anterior legs light ferruginous in front; middle legs
nearly the same; hind femora with a reddish stripe; anterior tarsi
entirely pale reddish; spurs white; abdomen very minutely punctured,
with five entire broad creamy-white bands, the first with a pair of
spots; band of silver-white hair on fifth segment rather narrow;
venter with light bands.
Var. a. Postscutellum all black; band on first abdominal segment without
enclgsed spots, but with a ferruginous notch on each side behind.
Var. b. Smaller, length about 51/2 mm.; lateral marks not extending above
antennm; scutellum with two large light spots; postscutellum black;
fourth and fifth abdominal bands broadly excavated in front on each
Hab.-- Pullman, Washington State, 1908 (W. M. Mann). Two
typical, Aug. 9; one var. a., Aug. 9; two vat. b., Aug. 9 and S0. A distinct little species, related to 2V. verecunda Cresson, but easily
known by its creamy-white markings. The general appearance is
suggestive of hr. vierecki Ckll., but that has red legs. I wished to
name this after its discoverer, but there is already a Nomada manni