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.—Head and thorax dark green, the frons and mesonotum brassy green. Mandibles except tips, labrum, and face below level of antennae bright yellow, except outer and interior margins of subantennal plates narrowly black. Lateral marks broadly truncate above, with a slender spur intruding between the fovea and margin of eye. Prothorax entirely yellow. Abdomen bright canary yellow, with a narrow blackish band at junction of tergites 1-2 to 4-5. Legs yellow, a streak on posterior side of middle tibiae, and the hind tibiae and tarsi blackish. Flagellum of antennae and pedicel blackish above, the flagellum dull yellowish beneath, the pedicel beneath and the scape clear yellow. Tegulae yellow at base and hyaline on outer margin. Wings hyaline, the nervures and stigma yellowish.
Head somewhat broader than long; the mandibles with an inner tooth. Facial foveae broader than interval between them and eyes, somewhat narrowed above and a little more than half as long as length of space between antennal sockets and anterior ocellus. Stigma of wings about as broad as apical truncation of marginal cell; the latter with the parts beneath and beyond stigma almost equal. Flanks of pronotum not much impressed. Pygidial plate moderately broad at base, the sides nearly Btraight and converging to the narrow apex, which has a shallow notch. Frons tessellate, but shining, with fine scattered punctures, which become close on the inner side of foveae. Mesoscutum polished, with moderately close, fine punctures. Pubescence whitish, fine and sparse, but not well preserved in type. Length, 4.75 mm.; anterior wing, about 3.4 mm.