|
Extracted from: Timberlake P.H., (1969). A Contribution to the Systematics of North America Species of Synhalonia (Hymenoptera, Apoidea). University of California Publications in Entomology Volume 57
Although similar to aragalli, the female of pallidihirta has the clypeus less closely punctured, and the abdominal bands, especially on the fourth and fifth segments, distinctly less broad.
Female.—Black; small joints of tarsi ferruginous; tibial spurs testaceous. Tegulae fuscous, amber at apex. Wings rather faintly tinged with brownish; nervures piceous, subcosta black. Pubescence moderately dense, rather short, pale ochreous or whitish on head and thorax. Hair of tergite 1 moderately long, erect, and white, but with appressed tomentum on each side of disk. Tergites 2 to 4 with broad bands of appressed white pubescence, with the interspersed longer erect hairs pale and inconspicuous. Band on tergite 2 covering disk and apical depression except rather broadly across middle of apex, but some black hair on the mostly concealed part of base. Basal half of tergites 3 and 4 with dense black hair, the white band on tergite 4 narrower than that on tergite 3. Tergite 5 black, with apical white band as wide as that on preceding segment not tipped with brown across middle. Hair of tergite 6 brown. Ventral fringes of abdomen white at least on each side, and more or less fulvous across middle, especially on sternites 4 and 5, and hair of stemite 6 brown. Hair of legs whitish, fulvous on hind tibiae and basitarsi, ferruginous on inner side of tarsi, pale brown on outer side of hind tibiae, and brown on front tarsi.
Head much broader than long; inner orbits of eyes parallel. Vertex only slightly impressed on each side; lateral ocelli their distance apart from nearest eye and somewhat more than their diameter from occipital margin. Proboscis moderately long; galeae minutely tessellate, rather dull, and nearly hairless. Second submarginal cell receiving recurrent nervure about one-fifth of its length from apex. Clypeus moderately closely rugoso-punctate, with smooth median space at base more or less developed. Frons and vertex finely and densely punctured. Mesonotum dull, densely punctured, the posterior middle of scutum more shining, with punctures about their own diameter apart; scutellum very densely punctured. Abdomen with minute, dense punctures, but apical de¬pression of tergite 1 broadly bare and impunctate and likewise apical half of depression across the middle of tergite 2. Pygidial plate somewhat longer than wide at base and moderately narrow at apex. Length about 12-13 mm, anterior wing 8-9 mm, width of abdomen 4.8-5 mm.
|
