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Extracted from: Timberlake P.H., (1958). A Revisional Study of The Bees of the Genus Perdita F. Smith, with Special Reference to the Fauna of the Pacific Coast (Hymenoptera, Apoidea) Part III. University of Caifornia Press Berkeley and Los Angeles 1958, Volume 14, No. 5, pp. 303-410, plates 4-15.
Female.—Dark blue-green, the disk of mesoscutum, the scutellum, and mesanotum black. Markings as in melanochlora, the clypeus broadly black on middle of disk. Abdominal bands more tinged with yellow than in melanochlora, that on tergite 2 having the interruption about equal to one third the width of segment and that on tergite 4 broader than the others, narrowly interrupted, and not reaching the lateral margins. Differs from melanochlora especially in hav-ing the wings not at all whitened and the nervures brownish. Pygidium as in melanochlora. Stigma a little shorter and narrower than in allied species, distinctly shorter than the marginal cell; the latter has the part beyond the stigma nearly twice as long as the part beneath. Pubescence whitish, the hair of mesonotum slightly shorter than in melanoohlora. Length, about 5 mm.; anterior wing, 3.3 mm.
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