1834 Hymenoptera in America North of Mexico 



Taxonomy: Lanham, 1941. Ent. Soc. Amer., Ann. 34: 706, 707. 9, 6 (key). — Timberlake, 

 1951. In Linsley, In Muesebeck, Krombein and Townes, U. S. Dept. Agr., Agr. Monog. 2: 

 1085 (synonymy). 



Biology: MacSwain and Bohart, 1947. Pan-Pacific Ent. 23: 30 (parasite). 

 w-scripta Viereck. B. C. to Calif. Pollen: Unknown, but visits flowers of Acacia greggii, 

 Adenostoma fascicidatum, Arctostaphylos glandulosa, A. mariposa, A. patula, A. 

 pungens, Ceanothus cordulatus, C. cmieatus, C. greggii, C. soredatus, Chamaebatia 

 foliolosa, Claytonia spathulata, Cryptantha intermedia, C. lepida, Daucus carota, 

 Eriogonum fascicidatum, Eriophyllum confertiflorum, Fritallaria, Heteromeles 

 arbutifolia, Holodiscus discolor, Horkelia, Lasthenia chrysostoma, Lomatiiim, Lotus 

 scoparius, Pliacelia dista^is, Prunus ilicifolia, Ranunculus califomicus, Rhamnus 

 califomicus, Salix laevigata. 

 Andrena w-scripta Viereck, 1904. Canad. Ent. 36: 193, 194. 9,6. 



Genus ANDRENA Subgenus TRACHANDRENA Robertson 



Trachandrena Robertson, 1902. Amer. Ent. Soc, Trans. 28: 189. 

 Type-species: Andrena rugosa Robertson. Orig. desig. 



All the species of this subgenus, except the Eurasian Andrena lagopus Latreille, are centered 

 in America north of Mexico and are not known to occur south of the United States. 



Revision: LaBerge, 1973. Amer. Ent. Soc, Trans. 99: 235-371, 69 figs., 2 tables, 15 maps (N. 

 Amer. spp.). 



Taxonomy: Lanham, 1949. Calif. Univ. Pubs. Ent. 8: 216 (tax. characters). —LaBerge, 1964. 



Nebr. Univ. State Mus., Bui. 4: 282, 292, 308 (tax. characters). — Warncke, 1968. Coimbra 



Univ. Est. Mus. Zool., Mem. 307: 68-69 (tax. status). 

 amphibola (Viereck). B. C. south to Calif., east to Alta., Mont. Wyo., Nebr. and Colo. Pollen: 

 Apparently polylectic, visits flowers of Astragalus, Daucus pusilla, Drymocallis, 

 Eriogonum flavum, Geum triflorum, Holodiscus discolor. Iris, Lappula floribunda, 

 Lonicera, Lupinus, Medicago sativa, Penstemon, Phacelia, Potentilla, Salix, Senecio, 

 Symphoricarpos, Taraxacum officinale, Thermopsis divaricata. 



Trachandrena amphibola Viereck, 1904. Canad. Ent. 35: 158, 159. 9, tJ. 



Trachandrena crassihirta Viereck, 1904. Canad. Ent. 35: 158. 9. 



Trachandrena perdensa Viereck, 1904. Canad. Ent. 35: 158. 9. 



Trachandrena hadra Viereck, 1904. Canad. Ent. 35: 158. 9. 



Trachandrena limarea Viereck, 1904. Canad. Ent. 36: 158, 159. 9,6. 



Andrena {Trachandrena) eriogoni Cockerell, 1927. Ent. Soc Amer., Ann. 20: 397. 9. 



Andrena {Trachandrena) seneciophila Cockerell, 1928. Psyche 35: 62. 9. 



Taxonomy: Viereck and Cockerell, 1914. U. S. Natl. Mus., Proc. 48: 10. 9 (as perdensa). 

 —Lanham, 1914. Ent. Soc. Amer. Ann. 34: 704. 9 (key, as seneciophila). —LaBerge, 1973. 

 Amer. Ent. Soc, Trans. 99: 284-292, figs. 1, 7, 34-35 (redescription, synonymy, variation in 

 color of vestiture). 



ceanothi Viereck. N. S. and Que., south to Ga., west to Minn, and Colo. Pollen: Polylectic, visits 

 flowers of Anielanchier, Amorpha fndicosa, Barbarea vulgaris, Ceanothus americamis, 

 Cerasus serotina, Chamaedaphne, C hrysanthemum leucanthemum, Comus 

 candidissimus, Crataegus, Fragaria, Ledum-, Prunus, Ptelea, Rhus, Rubus argidus, R. 

 villosus, Salix, Taraxacum officinale, Vaccinium angustifolium. Viburnum, 

 Waldsteinia. 



Andrena {Trachandrena) ceanothi Viereck, 1917. Amer. Ent. Soc, Trans. 43: 404. 9 {6 

 misdet.). 



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

 181. 6. 



Taxonomy: Cockerell, 1931. Amer. Mus. Novitates 458: 17. 9 (key). — Atwood, 1934. Canad. 

 Jour. Res. 10: 212. 9,6. —Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bui. 141: 179-180, 

 figs. 35-36, table 5 (redescription, synonymy). —LaBerge, 1973. Amer. Ent. Soc, Trans. 99: 

 346-349, figs. 1, 12, 58, 59 (redescription, synonymy). 



