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Extracted from: Timberlake P.H., (1969). A Contribution to the Systematics of North America Species of Synhalonia (Hymenoptera, Apoidea). University of California Publications in Entomology Volume 57
Female. Black; small joint of tarsi and claws moderately reddened; tibial spurs rufotes-taceous. Tegulae amber. Wings moderately infuscated, nervures piceous, subcosta black. Pu¬bescence rather dense, erect, and moderately long on thorax, sparser on head; bright fox red on dorsum of thorax, fulvo-ochraceous on tergite 1, except lateral margins and black on head, sides, and underpart of thorax, legs, and on remainder of abdomen.
Head much broader than long; inner orbits very slightly convergent above. Vertex moderately impressed on each side; lateral ocelli slightly more than their distance apart from nearest eye and somewhat more than their diameter from occipital margin. Proboscis moderately long; galeae minutely tessellate, moderately shining, and with sparse, short, erect hair. Second sub-marginal cell receiving recurrent nervure about one-fifth to one-fourth of its length from apex. Apical margin of tergite 1 broadly bare and impunctate, that of tergite 2 narrowly bare at the middle of segment. Pygidial plate large and cuneate, narrowly rounded at apex. Face somewhat shining, closely and finely punctured; clypeus finely rugoso-punctate. Cheeks and thorax sub-opaque, punctures of mesoscutum close and shallow, those of scutellum finer and dense. Length about 14 mm, anterior wing 10.5 mm, middle of abdomen 5.9 mm.
Male.—Black; small joints of tarsi and apex of middle basitarsi ferruginous, but apex of claw joints and claws blackish. Tibial spurs rufotestaceous. Tegulae amber. Wings dusky hyaline, nervures fuscous, subcosta black. Labrum and clypeus yellow; clypeal mark well separated from margin of eye and weakly notched on each side. Pubescence of head, thorax, legs, and first two tergites of abdomen varying from bright fulvous to white, changing in brighter-colored specimens to paler beneath and on the second tergite; hair of abdomen otherwise black, sometimes ochreous or brown across apex of tergite 6.
Head much broader than long; inner orbits of eyes somewhat divergent above. Vertex strongly impressed on each side, with summit of eyes prominent. Lateral ocelli slightly more than their diameter from occipital margin and twice their diameter from nearest eye. Antennae slender, reaching base of tergite 2, joint 3 about three-fourths as long as 4, flagellum strongly com¬pressed. Tibiae of middle legs strongly incised beneath on somewhat less than apical half, the protuberant angle oblique; middle basitarsi twice as wide near base as at apex. Hind trochanters usually armed beneath with a small conical tubercle. Hind basitarsi broader than usual. Sternite 6 with strong longitudinal impression on each side, terminating in weak lateral lobes, and bounded within by elbowed ridge; disk with submarginal hair on each side of apical margin, and dense patch of short, erect hair on each side of base. Sternites 7 and 8 as figured. Parameral lobes of genital armature more arcuate than usual, with apex broadened on inner side into a subacute angle. Length about 15 mm, anterior wing 10.5 mm.
Synhalonia californica deserticola
Extracted from: Timberlake P.H., (1969). A Contribution to the Systematics of North America Species of Synhalonia (Hymenoptera, Apoidea). University of California Publications in Entomology Volume 57
Female.—Like typical calif ornica, but pubescence of face, vertex, upper border of mesopleura of thorax, notum, sides of propodeum, and first two tergites of abdomen ochreous, varying to white, or sometimes tinged with fulvous on dorsal parts, partly light on cheeks and otherwise black. Sometimes a small amount of black hair on each side of base of tergite 2 and often a narrow band of thin white hair on apical margin of tergites 3 and 4. Hair on apical border of tergite 5 and on each side of pygidial plate more or less tinged with dark brown-Structurally like calif ornica, but median third of apical depression of tergite 2 almost entirely bare and punctureless (this character seems usually to have more specific than subspecific value). Length about 13-15 mm, anterior wing 10.5—11 mm, width of abdomen 5.5-6 mm.
Male.—Not distinguishable from typical calif ornica. Pubescence often more or less bright fulvous, but varying to white, with hair of abdomen black beyond second tergite. Length 13-15 mm, anterior wing 10-10.6 mm.
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