432 HYMENOPTERA OF AMERICA NORTH OF MEXICO 



*nida Mitchell. Md. to N. C, Mich., Miss. Taken on flowers of Amelanchier, 

 Prunus and Salix. (Parandrena) 

 Andrena (Parandrena) nida Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. 

 Bull. 141: 240, fig. 49, 50, 52, 55. ?, $. 



nigrae Robertson. 111., Minn, On flowers of Salix and Antennaria. (Micron- 

 drena) 



nivalis Smith. Que. to Ga., west to B. C, Oreg. and N. Mex. On flowers of 

 Hydrangea, Rhododendron, Rubus and Vagnera. (Gymnandrena) 

 Andrena (Gymnandrena) seniirufa Cockerell (syn. by Mitchell, 1960, loc. 

 cit. supra, p. 128, figs. 22, 23). 



nivaloides Graenicher. Syn. of novaeangliae Viereck. 



nothocalaidis (Cockerell). Remove perchalybea Viereck from syn., and 

 transfer to syn. of chalybioides. (Diandrena) 

 Taxonomy: Linsley and MacSwain, 1961. Pan-Pacific Ent. 37: 33. 



novaeangliae Viereck. Alta., Minn, and 111. east to N. S. and N. Y. Visiting 

 flowers of Angelica. (Thysandrena) 

 Andrena nivaloides Graenicher (syn. by Mitchell, 1960, loc. cit. supra, p. 

 224). 



nubecula Smith. B. C. to eastern Canada, south to Ga. On flowers of Aster, 

 Euthamia and Solidago. (Cnemidandrena) 



nuda Robertson. Colo, to N. Y., south to Ga. Visiting a number of flowers. 

 (Trachandrena) 



obscura (Robertson). 111. and Mich, to N. B., south to N. C. Visting flowers 

 of Ceanothus and Pycnanthemum. (Trachandrena) 



obscuripennis Smith, N. J. (?), N. C, Ga., La. (?). On flowers of Batoden- 

 dron, Crataegus, Ilex and Padus. (Gymnandrena) 



oenotherae Timberlake. Calif. (Coastal Santa Barbara Co. east to Colorado 

 Desert); Mexico (Baja California). Collects pollen of Oenothera 

 cheiranthi folia suffruticosa. (Onagrandrena) 

 Taxonomy: Linsley and MacSwain, 1963. Pan-Pacific Ent. 39: 189-190. 



olivacea Viereck. Visiting flowers of Oenothera, Malacothrix and Coreopsis. 

 (Diandrena) 



Taxonomy: Linsley and MacSwain, 1961. Pan-Pacific Ent. 37: 35. 



*omninigra clarkiae Linsley and MacSwain. Calif. (Monterey Co.). On 

 flowers of Clarkia. (Onagrandrena) 

 Andrena (Onagrandrena) omninigra clarkiae Linsley and MacSwain, 

 1961. Pan-Pacific Ent. 37: 127. ?, $. 



omninigra omninigra Viereck, changed status. (Onagrandrena) 



Andrena omninigra Viereck. Reduced to subsp. rank (teste Linsley and 



MacSwain, 1961. Pan-Pacific Ent. 37: 127). 

 Andrena grundeli grundeli Linsley. Syn. by Linsley and MacSwain, 



1961, loc. cit. s^ipra, p. 127. 



*oraria actitis Linsley and MacSwain. Calif. (San Francisco). Collects pol- 

 len of Oenothera c. cheiranthi folia. (Onagrandrena) 

 Andrena (Onagrandrena) oraria actitis Linsley and MacSwain, 1963. 

 Pan-Pacific Ent. 39: 196. 9, $. 



*oraria oraria Linsley and MacSwain. Calif. (Marin Co.). Collects pollen of 

 Oenothera c. cheiranthi folia and Oe. ovata. (Onagrandrena) 

 Andrena (Onagrandrena) oraria oraria Linsley and MacSwain, 1963. 

 Pan-Pacific Ent. 39: 196. 9, $. 



*osmioides benitonis Lanham. Northern Calif. On flowers of Cryptantha. 

 (Scoliandrena) 

 Andrena osmioides benitonis Lanham, 1949. Pan-Pacific Ent. 25: 148. 9, 

 5. 

 osmioides osmioides Cockerell, changed status. (Scoliandrena) 



