Superfamily APOIDEA 1777 



pyrrhacita pyrrhacita Cockerell. B. C. to Colo., Utah, Calif. Pollen: Oligolege of Salix. 

 Aiidrena pyrrhacita Cockerell, 1917. Ann. and Mag. Nat. Hist. (7) 19: 536. 9. 

 Andrena pyrrhacita var. coloradensia Viereck and Cockerell, 1914. U. S. Natl. Mus., Proc. 

 48:39. 9. 



Ta.xonomy: Lanham, 1965. Kans. Ent. Soc, Jour. 38: 200-201 (tax. status). 

 revelstokensis Viereck. B. C. 



Andrena (Andrena) revelstokensis Viereck, 1924. Canad. Ent. 56: 239. 9. 

 rhodotricha Linsley. Calif. 



Andre7ia rhodotricha Linsley, 1939. Pan-Pacific Ent. 15: 157. 9,6. 



Taxonomy: MacSwain, 1945. Pan-Pacific Ent. 21: 134 (nesting habits). 

 ribesina Cockerell. Colo. Pollen: Unknown, but visits flowers of Ribes. 



Andrena ribesina Cockerell, 1906 Amer. Mus. Nat. Hist., Bui. 22: 433. 9. 

 Andrena jacobaea Cockerell, 1915. Ann. and Mag. Nat. Hist. (8) 15: 267. 9. 



Taxonomy: Linsley, 1951. In Muesebeck, Krombein and Townes, U. S. Dept. Agr., Agr. 

 Monog. 2: 1079 (synonymy). 

 ribifloris Viereck and Cockerell. Colo. Pollen: Unknown, but visits flowers of Ribes. 

 Andrena ribifloris Viereck and Cockerell, 1914. U. S. Natl. Mus., Proc. 48: 32. c? ( 9 

 misdet.). 



saccata Viereck. Wash, to Calif. Pollen: Unknown, but visits flowers of Eriogonum. 

 Atidrena saccata Viereck, 1904. Canad. Ent. 36: 192, 195. 9, s'. 



Taxonomy: Cockerell, 1937. Amer. Mus. Novitates 899: 3 (tax. characters). 

 salicicola Viereck and Cockerell. Colo. Pollen: Unknown, but visits flowers of Salix. 

 Andrena salicicola Viereck and Cockerell, 1914. U. S. Natl. Mus., Proc. 48: 52. 9. 

 semifulva Viereck. Calif. 



Andrena (Andreiia) semifulva Viereck, 1916. Acad. Nat. Sci. Phila., Proc. 68: 575. 9. 

 singularis Viereck. B. C. 



Ajtdrena {Andrena) singularis Viereck, 1924. Canad. Ent. 56: 80. 9. 

 thaspii Graenicher. N. S. to N. J. west to Ind., Wis. and Minn. Pollen: Unknown, but visits 



flowers oi Angelica atropurpurea, Brassica, Chrysanthemum, Diervilla, Ledum, Pyrus 

 mains, Raphanus, Rosa, Rubus, Solidago, Stellaria, Taraxacum, Thaspium, trifoliatum 

 aureum, Trifolium, Vaccinium. 

 Andrena thaspii Graenicher, 1903. Canad. Ent. 35: 162. 9,6. 



Taxonomy: Cockerell, 1912. Ann. and Mag. Nat. Hist. (8) 9: 382. 9 (var.). — Atwood, 1934. 

 Canad. Jour. Res. 10: 208, 209. 9, 6 (key). —Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. 

 Bui. 141: 108-109, table 3 (redescription). 

 thaspiiformis Viereck. Calif. Pollen: Oligolege of Salix including S. gooddingii, S. hindsiana, S. 

 laevigata, S. lasiolepis, S. nigra, but visits other flowers presumably for nectar 

 including Sainbuciis caenilea. Spiraea prunifolia. 

 Andrena {Andrena) perezana thaspiiformis Viereck, 1917. Amer. Ent. Soc, Trans. 43: 386. 

 9. 

 tincta Viereck. Colo. 



Andrena (Andrena) tincta Viereck, 1917. Amer. Ent. Soc, Trans. 43: 387. 9. 



topazana Cockerell. Colo., Idaho, Wyo. 



A7idre7ia topazana Cockerell, 1906. Amer. Mus. Nat. Hist., Bui. 22: 434. 9. 



Taxonomy: Viereck and Cockerell, 1914. U. S. Natl. Mus., Proc 48: 44, 45. 9. —Cockerell, 

 1927. Ent. Soc. Amer., Ann. 20: 397. 9. 

 tridens Robertson. New England States, south to Tenn. and Ga., west to Mich, and 111. Pollen: 

 Unknown, but visits flowers of Azalea, Dentaria, Hepatica, Hydrangea, Rhododendron, 

 Rhus. 

 Andrena tridens Robertson, 1902. Amer. Ent. Soc, Trans. 28: 192. 6. 

 Andrena comelli Viereck, 1907. Ent. News 18: 282. 9. 



