428 HYMENOPTERA OF AMERICA NORTH OF MEXICO 



complexa ( Viereck) . Collects pollen of Ranunculus. (Ptilandrena) 



Biology: Linsley and MacSwain, 1959. Calif, Univ. Pubs. Ent. 16: 5-13, 

 text figs. 1-5, plate figs, lb, 3c and d. 



confederata Viereck. Ohio to N. J., south to Fla. Visiting a number of 

 flowers. (Gyninandrena) 



*convaIIaria convallaria Linsley and MacSwain. Calif. (San Joaquin Valley 

 and western Mojave Desert). Collects pollen of Oenothera cam- 

 pestris. (Onagrandrena) 

 Andrena (Onagrandrena) convallaria convallaria Linsley and MacSwain, 

 1963. Pan-Pacific Ent. 39: 193. ?, $. 



*convallaria subhyalina Linsley and MacSwain. Calif. (Kern Co.). Collects 

 pollen of Oenothera campestris. {Onagrandrena) 

 Andrena (Onagrandrena) convallaria subhyalina Linsley and MacSwain, 

 1963. Pan-Pacific Ent. 39: 193.9, $. 



crataegi Robertson. Transcont. in southern Canada and northern U. S., south 

 to Ga., Colo, and Oreg. Visits a number of flowers. {Schizan- 

 drena) 

 Andrena (Schizandrena) subcommoda Cockerell (syn. by Mitchell, 1960, 

 loc. cit. supra, p. 206) . 



*crenata Mitchell. Mich. {Thysandrena) 



Andrena (Thysandrena) crenata Mitchell, 1960. N. C. Agr. Expt. Sta. 

 Tech. Bull. 141: 221, figs. 44, 51. $. 



cressonii cressonii Robertson, changed status. U. S. and southern Canada. 

 Visits a large number of flowers. (Opandrena) 

 Andrena cressonii Robertson. Reduced to subsp. rank {teste Lanham, 

 1949. Pan-Pacific Ent. 25: 147). 



*cressonii infasciata Lanham. Calif., Wash. On flowers of Brassica, Pyra- 

 cantha, Ranunculus and Salix. {Opandrena) 

 Andrena cressonii infasciata Lanham, 1949. Pan-Pacific Ent. 25: 147. ?, 

 $. 

 *cressonii ivanensis Mitchell. Va., N. C. Taken on flowers of Brassica and 

 Padus. {Opandrena) 

 Andrena (Opandrena) cressonii ivauensis Mitchell, 1960. N. C. Agr. 

 Expt. Sta. Tech. Bull. 141: 249, fig. 52. $. 



*cressonii tallahassensis Mitchell, emended. Fla., N. C. {Opandrena) 



Andrena (Opandrena) cressonii tallahasensis (!) Mitchell, 1960. N. C. 

 Agr. Expt. Sta. Tech. Bull. 141: 249, figs. 50, 53. $. 



*critica Mitchell. N. Y. (Catskill Mts.). {Bythandrena) 



Andrena (Bythandrena) critica Mitchell, 1960. N. C. Agr. Expt. Sta. 

 Tech. Bull. 141: 113. 9 . 



cuneilabris Viereck. Collects pollen of Ranunculus. {Diandrena) 



Biology: Linsley and MacSwain, 1959. Calif. Univ. Pubs. Ent. 16: 17-18, 

 pi. 4. 



cyanosoma (Cockerell). Visits flowers of Ocnof/i era. {Diandrena) 



Andrena (Diandrena) austrocalifornica Viereck (syn. by Linsley and 

 MacSwain, 1961. Pan-Pacific Ent. 37: 36). 



davisi Viereck. Syn. of violae Robertson. 



*dimorpha Mitchell. N. J., N. C, Fla. {Pterandrena) 



Andrena (Pterandrena) dimorpha Mitchell, 1960. N. C. Agr. Expt. Sta. 

 Tech. Bull. 141: 143, figs. 24-26, 28. 9, $. 



distans Provancher. Minn, to New England, south to N. C. On flowers of 

 Geranium, Heracleum and Polymonium. {Ptilandrena) 

 Andrena (Ptilandrena) geraniimaculati Viereck (syn. by Mitchell, 1960, 

 loc. cit. supra, p. 154). 



*dreisbachi Mitchell. Mich. {Gonandrena) 



Andrena (Gonandrena) dreishachi Mitchell, 1960. N. C. Agr. Expt. Sta. 

 Tech. Bull. 141: 230. 9. 



