|
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 seems closest to isocomae and lompocensis, by characters of the genitalia. It differs from isocomae in having the subantennal plates yellow, front and middle legs entirely yellow, and the wings duskier hyaline, with the stigma longer and less rounded beneath. Male.—Head and thorax dark blue-green. Mandibles except red tips, labrum, face below level of antennae except the clypeal dots and dark suture at inferior margin of subantennal plates, anterior end of cheeks, and orbital line nearly to middle of eyes yellow; lateral marks of face oblique and acute above and reaching on orbits almost to foveae. Pronotum yellow, with a green band from flank to flank. Abdomen yellow, with the first tergite fuscous except a small spot on lateral margins of disk, and with four broad dark bands on following segments; these bands with a slight broad bulge on each side in front and about as broad as the yellow intervals between them. Legs yellow, with the outer margin of hind tibiae and basitarsi and small joints of hind tarsi brown. Scape and underside of pedicel clear yellow, the antennae otherwise brownish yellow beneath, a spot at apex of scape, pedicel, and flagellum brown above, becoming paler toward apex. Tegulae hyaline, with the basal margin yellow. Wings dusky hyaline, the nervures pale brown, subcosta and margins of stigma darker brown. Head rotund, no broader than long. Mandibles rather slender, subacute at apex and hardly reaching far margin of proboscidial cavity. Facial foveae faint and about three times longer than wide. Frons granular tessellate, subopaque, with very obscure punctures. Mesonotum polished, with very remote punctures. Pubescence whitish, thin and erect on mesonotum, and about normal in density on cheeks and underparts of thorax. Subgenital plate about as long as wide and subtruncate at apex. Parameral lobes of caulis obliquely truncate, with a right angle formed on inner side and an acute angle at apex, with the underpart of the lobes almost wholly concealed in dorsal view; fused part of the sagittae slightly angulate on each side before the apex. Length, about 4.5 mm.; anterior wing, 3.6 mm. One male (holotype) 2 miles northeast of Caliente Mountain, San Luis Obispo Co., California, Oct. 18, 1952 (K. W. Tucker), in collection of the Citrus Experiment Station, Riverside.
|
