1810 Hymenoptera in America North of Mexico 



Pastinaca sativa, Perideridea americana, Phacelia diibia, P. ranunculacea, P. purshii, 

 Potentilla canadeiisis, Prunus, Ranunculus abortivus, R. septentrionalis, Rubus 

 flagellaris, Salix nigra, Sanicula marilandica, Sisymbrium, Spiraea, Taenidia 

 integerri^na, Thaspium barbinode, T. trifoUatum, Viburnum molle. 

 Andrena personata Robertson, 1897. Acad. Sci. St. Louis, Trans. 7: 336. 9,6. 



Taxonomy: Robertson, 1902. Amer. Ent. Soc, Trans. 28: 193. 9, 3 (key). — Cockerell, 1932. 

 Canad. Ent. 64: 157, 158. 9, 6 (key). -Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bui. 141: 

 165-167, figs. 28, 31-33, table 4 (redescription). — Ribble, 1968. Nebr. Univ. State Mus., Bui. 

 8: 254-259, figs. 6-10, map 2 (redescription). 



Biology: Ribble, 1968. Nebr. Univ. State Mus., Bui. 8: 257-258, table 2 (floral relationships, 

 stylopization). 

 piperi Viereck. B. C. to Calif., east to Idaho, Colo, and Ariz. (Tucson); Mexico (Baja California). 

 Pollen: Polylectic, visits a wide variety of flowers, especially those of the Cruciferae; 

 visitation records include Agoseris auriantiaca, Alyssum, Amsinckia, Barbarea 

 orthoceras, Brassica alba, B. campestris, B. 7iigra, Capsella bursa-pastoris, Cardaria 

 draba, C. pubescens, Ceanothus, Cirsium, Cryptantha intermedia, C. muricata, 

 Desconrainia pinnata, D. sophia, Erysimum repandiim, Lasthenia chrysostoma, 

 Lepidijim, Lobularia maritima, Lomatium dissectum, Lupinus, Medicago sativa, 

 Penstemon, Phacelia f rem ontii, Platystemon califomicus. Polygonum, Prunus 

 subcordata, Ranxinculus califomicus, Raphanus sativus, Ribes, Rubus, Salix lasiolepis, 

 Salsola kali. Sisymbrium altissimuyn, S. irio, S. pinnatum, Stellaria media, Tamarix, 

 Taraxacum officinale, Thlaspi arvense, Tropidocarpum gracile. 

 Andrena piperi Viereck, 1904. Canad. Ent. 35: 189. 9. 



Taxonomy: Timberlake, 1951. U. S. Natl. Mus., Proc. 101: 392. S. —Ribble, 1968. Nebr. Univ. 

 State Mus., Bui. 8: 248-254, figs. 1-5, map 1 (redescription). 



Biology: Ribble, 1968. Nebr. Univ. State Mus., Bui. 8: 252-254, table 1 (floral relationships, 

 stylopization), 

 salictaria Robertson. Transcont. south. Canada (N. S. to B. C.) and Maine to N. C. west to 

 Wash., Utah, Colo, and N. Mex. Parasite: Stylops bruneri Pierce. Pollen: Apparently 

 narrowly polylectic, chiefly Salix including S. bebbiana, S. cordata, S. humilis, but visits 

 other flowers including Amelanchier, Antennaria, Barbarea, Chamaedaphne, Claytonia, 

 Cotoneaster, Crataegus, Lomatium, Prunus americana, Rhus, Sassafras, Viburnum 

 opulus. 

 Andrena salictaria Robertson, 1905. Canad. Ent. 37: 236. 9, S. 



Taxonomy: Atwood, 1934. Canad. Jour. Res. 10: 207, 210. 9, 6 (key). — Lanham, 1941. Ent. 

 Soc. Amer., Ann. 34: 705, 706, 708. 9, 6 (key). —Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. 

 Bui. 141: 167-168, figs. 30-32, table 4 (redescription). -Ribble, 1968. Nebr. Univ. State 

 Mus., Bui. 8: 309-313, figs. 64-68, map 7 (redescription). 



Biology: Salt, 1927. Jour. Expt. Zool. 48: 252 (stylopization). 



Taxonomy: Ribble, 1968. Nebr. Univ. State Mus., Bui. 8: 311-312, table 9 (stylopization, floral 



relationships). 

 ziziae Robertson. New England to Ga., west to Man., N. Dak., S. Dak., Nebr., Kans. and N. 

 Mex. Parasite: Imparipes sp. Pollen: Polylectic although nearly all floral records are 

 from Zizia including Z. aptera, Z. aurea, but visits other flowers including Amorpha 

 fruticosa, Aruncus dioicus, Barbarea vtilgaris, Ceanothus ovatus. Echinacea 

 angustifolia, Hieracium, Pastinaca sativa, Polytaenia nuttallii, Rudbeckia 

 amplexicaulis, Sanicula marilandica, Taenidia integerrima, Thaspium barbinode, T. 

 trifoUatum. 



Andrena ziziae Robertson, 1891. Amer. Ent. Soc, Trans. 18: 55. 9, S. 



Andrena (Micrandrena) vemalis Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bui. 141: 168, 

 fig. 29. 9. 



Taxonomy: Robertson, 1902. Amer. Ent. Soc, Trans. 28: 193. 9, 6 (key). —Cockerell, 1932. 

 Canad. Ent. 64: 157, 158. 9, 6 (key). -Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bui. 141: 



