Species account taken from: "A Revision of the Genus Ashmeadiella (Hymen., Megachilidae) Author(s): Charles D. Michener Source: American Midland Naturalist,Vol. 22, No. 1 (Jul., 1939), pp. 1-84"
This species is black with the abdomen partly red. It is probably most closely related to eurynorhyncha, but differs in having a shorter, broader face. The median lobe of the clypeus is broad, with a narrow median apical notch.
Female: Inner margins of eyes about parallel, diverging somewhat at lower ends; facial line but little longer than transfacial; clypeus punctate laterally, merely roughened on disc; notches separating median from lateral lobes of .clypeus deeper than broad, with sides diverging but slightly apically; lateral lobes of clypeus small, slender, acutely pointed apically; median lobe of clypeus broad, narrower basally than subapically, apical margin broadly rounded, ,crenulate, with small, deep, median notch; median lobe of clypeus with longi- tudinal median carina; median lobe, seen from side, with dorsal surface at an angle of about 150? or more to surface of adjacent disc of clypeus; labrum bidentate at apex; mandibles slender; hypostomal carinae each produced to a tooth posteriorly; cheeks narrower than eyes, seen from sides; anterior ocellus posterior to midpoint between bases of antennae and posterior edge of vertex; distance between posterior ocelli equal to distance to nearest eye margin; frons and vertex rather finely and closely punctured. Scutum and scutellum with punctation similar to that of vertex; no pair of hair tufts at anterior end of scutum; mesepisterna more coarsely and less closely punctured than scutum; tegulae testaceous; wings faintly dusky; legs black; inner margin of inner hind tibial spurs serrate with about twelve small teeth, outer margin with four long teeth, basad to which are two or three not much smaller ones. Abdominal tergites strongly punctured; sides of tergites one to five rather dark red, posterior margins of these tergites also dark reddish; posterior margins of tergites one to five with inconspicuous apical pubescent bands. Length 6 mm. Holotype: east side of Mt. Baldy, Panamint Mountains, Inyo County, California, 9000 feet elevation, June 18, 1937 (C. D. Michener).
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