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|
Viereck described this species from Corvallis, Oregon, but only his description of the male is exact enough for identification of the species. In fact, his type material in the female sex included specimens which I call edwardsii, as attested by a paratype now before me. My concept of the cordleyi female is based on the characters cited by Cockerell (1914), but these characters are subject to variation and there seems to be such a complete intergradation with edwardsii that it is impossible to identify all specimens with certainty. S. cordleyiorophila Cockerell is near the borderline between the two species.
Female—Black; small joints of tarsi ferruginous. Tegulae dark amber, fuscous toward base. Wings strongly dusky, nervures fuscous, subcosta black. Pubescence fulvo-ochraceous, paler to whitish on face, underparts, legs, and base of abdomen. Hair of tergites 2 to 5 black, with white apical band on tergites 2 to 4. Band on tergite 2 abruptly and strongly narrowed by the black on each side, and receding from margin across the middle where it is margined by a row of ap-pressed black hairs. Bands on tergites 3 and 4 narrower than the black part of segments, that on tergite 3 especially, somewhat widened at middle and slightly narrowed toward outer ends, making anterior margin more or less undulant. Apical band on tergite 5 tinged with brown and whitish far to each side. Hair on each side of pygidial plate dark brown, becoming black at apex. Scopal hair of hind legs pale ochreous, that on inner side of tarsi bright ferruginous, and dense hair on outer side of middle tibiae and at apex of hind femora pale seal brown.
Head much broader than long, inner orbits parallel. Vertex slightly impressed on each side; lateral ocelli their distance apart from nearest eye. Proboscis moderately long; galeae smooth and shining, except minutely tessellate on outer border. Second submarginal cell receiving re¬current nervure generally more or less close to apex. Pygidial plate a little longer than wide at base, sides converging to broadly rounded apex. Clypeus rather dull, rugosely punctured. Mesono-tum dull, with rather fine, close punctures. Apical depression of tergite 1 broadly bare and shining and that of tergite 2 bare on apical half across the middle. Length about 14 mm, anterior wing 9.5, width of abdomen 6 mm.
Male.—Black; small joints of tarsi dark ferruginous. Lebrum and clypeal mark yellow; the mark rounded above, or sometimes truncate medially, with posterior margin of clypeus more or less broadly black and the yellow widely separated from margin of eyes. Pubescence in general similar to that of female, but hair of abdomen mostly erect, except for bands of appressed white hair on apical part of tergites 3 to 6. Hair of tergite 2 moderately long and light, except for more or less black hair at base of apical depression. Hair on disk of tergite 3 also light but with more or less black hairs intermixed across basal margin. Tergites 4 and 5 similar to tergite 3 but with black hairs more strongly intermixed. Hair of tergite 6 black, with apical band more or less tinged with brown. Hair of tergite 7 brown, that of venter and legs whitish.
Head much broader than long, inner orbits of eyes slightly diverging above. Vertex only slightly impressed on each side; lateral ocelli about their distance apart from nearest eye. An¬tennae unusually long and thick, reaching to or beyond tergite 4, and strongly compressed, joint 3 on short side much shorter than apical width and about one-eighth as long as joint 4. Sternite 6 with shallow, longitudinal impression on each side, terminating in rather broad, rounded bulge in lateral margins, disk with low ridge on each side paralleling lateral margins and invested with fine, erect hair along outer margin of ridges, and the usual patch of erect hair at base. Sternites 7 and 8 as figured. Parameral lobes of genital armature rather long and slender but much broadened at base and slightly thickened at apex, basal half on outer face with short, erect hair. Length usually about 11-13 mm, anterior wing 7.8-9.5 mm.
Tetralonia poetica sp. n.
Extracted from: Cockerell T.D.A, (1913). Description and Records of Bees. - XXVI. Ann. Mag. Nat. Hist. (8)5: 256-264
MALE. Length about 12mm
In my table in Trans. Amer. Ent. Soc. XXXII. p. 79, runs out at 4, becuase yellow of clypens is not notched at sides; except for this character it runs to T. frater (Cress.) on p. 80 to which it is very closely allied. It differs from T. frater (a co-type from Colorado compared) by the clypeal yellow being pale lemon instead of almost orange, its upper border arched, leaving the upper and lateral margins of the clypens broadly black; face broader; hair of thorax above more strongly ochreous; apical plate of abdomen broader; last ventral segment with the oblique submarginal ridges stright or neraly (curved in frater), and apical corners of segment prominent (not so in frater).
I thought this might be the male of T. viryata (Ck11.), but the b. n, In virgata squarely meets the t. -m., whereas in poetica it falls short of it.