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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 California Press Berkeley and Los Angeles 1958, Volume 14, No. 5, pp. 303-410, plates 4-15.
Female.—Dark blue-green, the mesonotum somewhat yellowish green; light parts very pale yellow or creamy white, with the legs more yellowish than other parts. Mandibles except red tips, labrum, clypeus except usual dots, lateral marks, and an imperfect supraclypeal mark white;lateral marks much higher than wide and intruding between lower end of foveae and margin of eyes; supraclypeal mark more than twice as broad as high, or reduced to two dots. Pronotum dark, with the collar, posterior margin of disk, and the tubercles wfaite. Abdomen white, with five rather broad blackish bands, the light band on tergite 1 considerably expanded on each side of the median, line and interrupted only by the dark median crease; dark bands on following segments, especially those on tergites 3 and 4 with a broad but slight, anterior bulge on each side. Legs pale canary yellow, the front coxae blackish, a broad blotch on front femora be hind, broad line on posterior side of middle tibiae, and the hind tibiae and tarsi brownish fuscous. Scape except a spot above at apex and underside of pedicel pale yellow, the antennae otherwise dark brown above and pale brown beneath. Tegulae whitish at base and broadly hyaline on outer margin. Wings hyaline, the nervures pale yellowish testaceous with a slight brownish tinge.
Head considerably broader than long. Mandibles rather stout, subdilated within and abruptly narrowed before the apex without forming a distinct inner tooth. Facial foveae well impressed, broader than the interval between them and the eyes, and extending from level of middle of antennal sockets somewhat more than halfway to level of anterior ocellus. Pygidial plate about as long as broad at base, the sides slightly arcuately converging to the moderately narrow, notched apex. Frons smoothly tessellate, rather shining, and with moderately close fine punc tures on each side below and more scattered punctures in front of the ocelli. Mesoscutum polished, with moderately remote fine punctures. Pubescence whitish, about normal for the group, with hair of mesonotum rather short and sparse and the prescutellar band of hair little developed. Length, 5 mm.; anterior wing, 3.2 mm.
Perdia parilis
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 California Press Berkeley and Los Angeles 1958, Volume 14, No. 5, pp. 303-410, plates 4-15.
This species appears to be most closely allied to aemula; the females of the two species have distinctive differences in the structure of the mandibles and sculpture of the frons, but the males are more difficult to separate.
Female.—Head and thorax dark green, the propodeum more bluish. Mandibles at base, labrum, clypeus, lateral marks, and sometimes a broken or evanescent supraclypeal mark creamy white. Supraclypeal area otherwise and subantennal plates black. Mandibles shading into testaceous at middle and into red at apex. Lateral marks widened just below level of summit of clypeus and abruptly narrowed above to intrude for a short distance between fovea and margin of eye. Collar of pronotum, band on posterior margin of disk, sometimes inter rupted medially, and the tubercles creamy white. Abdomen creamy white, with base of tergite 1 and a broad band at junction of tergites 1-2 to 4-5 blackish; light band on tergite 1 narrow, interrupted medially and sometimes on each side to become evanescent, and that on tergite 2 much narrowed at outer ends. Legs pale yellow, with a large blotch on posterior side of front femora, a line or stripe on outer margin of front and middle tibiae, and the hind tibiae and tarsi brown or fuscous. Antennae brownish fuscous, the scape except large mark above on apical half and underside of pedicel creamy white, the underside of flagellum dull pale yellowish. Tegulae hyaline, the basal margin white. Wing whitish hyaline, the nervures pale yellowish, the subcosta pale ferruginous.
Head somewhat broader than long. Mandibles stout, with inner margin subdilated and narrowed close to apex without formation of an inner tooth. Facial foveae moderately wide and extending about two thirds of distance from level of antennal sockets to level of anterior ocellus. Pygidial plate moderately broad, the rather narrow rounded apex either with or without a small median notch. Frons dullish, with fine close punctures, mostly concentrated in the area adjacent to the fovea on each side. Mesonotum polished, with moderately sparse fine punctures. Pubescence whitish, that of the mesonotum thin, short and erect. Length, 5 mm.; anterior wing, 3.5-3.6 mm.
Male.—Dark blue-green. Mandibles except red tips, labrum, and face below level of antennae yellow, except lower end of subantennal plates, more or less black. Lateral marks extending obliquely a little above level of antennae, as usual. Collar of pronotum, small spot on anterior margin of flanks, mark on each Bide of hind margin of disk, and the tubercles yellow. Abdomen yellow, with first tergite and a band at junction of tergites 2-3 to 4-5 blackish, and a trace of a dark band at apex of tergite 5; sometimes a very narrow and interrupted yellow band on tergite 1, and the yellow band on tergite 2 sometimes enclosed. Legs clear yellow, with a blotch or streak on posterior side of front femora and on front and middle tibiae, the outer margin of hind tibiae and sometimes a small spot at apex of hind femora fuscous, and the small joints of hind tarsi pale fuscous. Scape and underside of pedicel clear yellow, the flagellum dull yellowish beneath and brownish fuscous above. Tegulae and wings as in female, but subcosta and margins of stigma more brownish.
Head slightly broader than long. Mandibles tapering to acute apex and reaching far margin of proboscidial fossa. Facial foveae very faint, about twice as long as wide. Frons subopaque, with obscure, fine close punctures. Mesonotum polished, with fine moderately sparse punctures. Pubescence as in female. Subgenital plate about twice as long as wide, the sides a little incurved, and the apex moderately broadened and rounded. Aedeagus similar to that of aemula, more depressed, with the rim of basal orifice of caulis less broad, the mediodorsal lobes of caulis shorter, and the fringe at apex of parameral lobes denser but composed of shorter and finer hairs. Length, 4-4.5 mm.; anterior wing, about 3.1-3.4 mm.
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