Superfamily APOIDEA 1843 



sublayiae LaBerge and Bouseman. Cent. Calif. Pollen: Unknown, but visits flowers of 

 Hemizonia, Layia. 



Andrena (Tylandrena) sublayiae LaBerge and Bouseman, 1970. Amer. Ent. Soc, Trans. 

 96:597, figs. 1,3,71-75. 9,6. 

 subtilis Smith. B. C. to Calif., east to Mont., Wyo. and Colo. Pollen: Polylectic, visits flowers of 

 Acer macrophylla, Baccharis viminea, Brassica campestris, Calandrinia caulescens, 

 Caragana, Conium maculatum, Crepis, Gilia, Grossularia, Hackelia floribunda, 

 Lasthenia, Limnanthes douglasii var. douglasii, Lomatium dissectum, Primus deynissa, 

 P. subcordata, Purshia tridentaia, Pyracantha, Pyrus, Rayiu7icnlus califomicus, Rosa, 

 Salix lasiolepis, Senecio, Spiraea, Tamarix gallica, Taraxacum. 



Andrena subtilis Smith, 1879. Descr. New Species Hym. Brit. Mus., p. 55. 9. 



Andrena seminigra Viereck, 1904. Canad. Ent. 36: 190. 9. 



Andrena semicyanea Cockerell, 1924. Pan-Pacific Ent. 1: 58. 9. 



Taxonomy: Morice and Cockerell, 1901. Canad. Ent. 33: 155 (type). —Cockerell, 1906. Psyche 

 13: 6 (type). —LaBerge and Bouseman, 1970. Amer. Ent. Soc, Trans. 96: 574-580, figs. 1, 5, 

 36-40 (redescription, synonymy). 

 Biology: Linsley and MacSwain, 1959. Calif. Univ. Pubs. Ent. 16: 19 (floral relationships). 

 waldraerei LaBerge and Bouseman. South. Calif. Pollen: Unknown, but visits flowers of 



Allium haematochiton, Encelia califomica, Lomatium dasycarpum, Rhus trilobata. 

 Possibly a subspecies or synonym of ^4. hurdi Lanham. 

 Andrena (Tylandrena) waldmerei LaBerge and Bouseman, 1970. Amer. Ent. Soc, Trans. 

 96:580, figs. 1,41-45. 9, d. 

 wilmattae Cockerell. Pa. to N. C, west to Wyo. and Colo. Pollen: Unknown, but visits flowers 

 of Amorpha canescens, Crataegus, Crepis runcinata, Erigeron, Melilotus alba, M. 

 officinale, Primus angustifolia. Spiraea vanhouteii, Pastinaca sativa. Viburnum 

 lentago. 

 Andrena Wilmattae Cockerell, 1906. Ann. and Mag. Nat. Hist. (7) 17: 224. 9. 

 A7idre7ia subaustralifonnis Viereck and Cockerell, 1914. U. S. Natl. Mus., Proc 48: 28. S. 

 Andrena beutenmuelleri Viereck, 1916. Amer. Mus. Nat. Hist., Bui. 35: 729. 9. 

 Andrena (B ythandrena) acra Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bui. 141: 111, figs. 

 18, 19,21. S. 

 Taxonomy: LaBerge and Bouseman, 1970. Amer. Ent. Soc, Trans. 96: 567-571, figs. 1, 4, 

 26-30 (redescription, synonymy). 



Genus ANDRENA Subgenus XIPHANDRENA LaBerge 



Andrena subg. Xiphandrena LaBerge, 1971. Amer. Ent. Soc, Trans. 97: 504. 



Type-species: Andrena (Trachandrena) mendica Mitchell. Monotypic and orig. 

 desig. 

 Revision: LaBerge, 1971. Amer. Ent. Soc, Trans. 97: 504-507, figs. 1, 4, 54-58. 

 mendica Mitchell. 111., Ohio, Tenn., Va., N. C, Ga. Pollen: Unknown, but visits flowers of 

 Arimcus arimcus, Ceanothus including C. americanus. 

 Andrena (Trachandrena) mendica Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bui. 141: 

 189, figs. 35-37, 40. 9, d. 



Genus ANDRENA Subgenus UNASSIGNED 



Although some of these species have been assigned and even reassigned to some of the sub- 

 genera in Andrena, their correct assignments must await further studies of the genus. 



agricolarum Viereck and Cockerell. Colo. 



Andrena agricolarum Viereck and Cockerell, 1914. U. S. Natl. Mus., Proc. 48: 29. S. 



albuginosa (Viereck). Oreg. 



Pterandrena albuginosa Viereck, 1904. Canad. Ent. 36: 227, 228. 9. 



angustella angustella Cockerell. Calif. 



Andrena angustella Cockerell, 1936. Pan-Pacific Ent. 12: 136. 6. 



