1838 Hymenoptera in America North of Mexico 



Taxonomy: Morice and Cockerell, 1901. Canad. Ent. 33: 153. 9, 6 (types). — Cockerell, 1906. 

 Psyche 13: 34 (type). -Atwood, 1934. Canad. Jour. Res. 10: 208, 210. 9, 6 (key). 

 — Atwood, 1934. Canad. Jour. Res. 10 (2): 208, 210 (as grandior). — Timberlake, 1951. hi 

 Linsley, hi Muesebeck, Krombein and Townes, U. S. Dept. Agr., Agr. Monog. 2: 1072 

 (synonymy). —Mitchell, 1958. In Krombein, U. S. Dept. Agr., Agr. Monog. 2, First Suppl. 

 p. 215 (synonymy). -Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bui. 141: 190-191, figs. 35, 

 38, table 5 (redescription, synonymy). — LaBerge, 1973. Amer. Ent. Sec, Trans. 99: 

 267-273, figs. 1, 5, 26-27 (redescription). 



Biology: LaBerge, 1973. Amer. Ent. Soc, Trans. 99: 272-273 (floral relationships, 



stylopization). 

 nuda Robertson. Maine to Ga., west to Tex., N. Mex., Utah and Wyo. Pollen: Polylectic, 

 although with a preference for flowers of the Rosaceae: visitation records include 

 Aruncus, Benzoin aestivale, Cercocarpus, Claytonia, Conium, Crataegus mollis, 

 Erigenia, Euphorbia, Heracleum, Ilex, Lomatium dissectum, Melilotus officinalis, 

 Myosotis, Pastinaca saliva, Peiisiemon, Prunus americana, P. serotina, P. virginica, 

 Ptelea, Pyracantha, Pynis leonis, P. malus, P. pyrus, Rhamnus lanceolata, Rhus, 

 Rubus argutus, Salix, Sanicula, Sassafras, Staphylea, Symplocus, Taenidia, Viburnum 

 prunifoiium, Zizia. 



Andrena nuda Robertson, 1891. Amer. Ent. Soc, Trans. 18: 57. 9. 



Andrena (Trachandrena) davisiana Viereck and Cockerell, 1914. U. S. Natl. Mus., Proc. 

 48:6. S. 



Andrena {Trachandrena) pseudobscura Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bui. 

 141: 193, fig. 36. 6. 



Taxonomy: Robertson, 1902. Amer. Ent. Soc, Trans. 28: 189. 9 (key). — Lanham, 1941. Ent. 

 Soc. Amer., Ann. 34: 704. 9 (key). —Lanham, 1941. Ent. Soc. Amer., Ann. 34: 707. S (key, 

 as davisiana). -Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bui. 141: 192-193, fig. 35 

 (redescription). -LaBerge, 1973. Amer. Ent. Soc, Trans. 99: 333-338, figs. 1, 14, 52-53 

 (redescription, synonymy). 



Biology: LaBerge, 1973. Amer. Ent. Soc, Trans. 99: 337-338 (floral relationships). 

 quintiliformis Viereck. B. C. to Calif., east to Idaho, Nev. and Utah. Pollen: Apparently 

 polylectic, visits flowers of Achillea millefolia. Allium, Arctostaphylos, Ceanothus 

 cuneatus, C. laevigatus, Chamaebatia foliolosa, Cirsium, Eriogonum, Lappula, 

 Lomatium tritematum, Phacelia humilis. Ranunculus, Salix, Solidago califomica. 

 Andrena (Trachandrena) quintiliformis Viereck, 1916. Acad. Nat. Sci. Phila., Proc. 68: 606. 



9. 

 Andrena (Trachandrena) coactifera Viereck, 1926. Calif. Acad. Sci., Proc. (4) 15: 399. 9. 



Taxonomy: LaBerge, 1973. Amer. Ent. Soc, Trans. 99: 278-281, figs. 1, 6, 30-31 (redescription, 



synonymy). 



Biology: LaBerge, 1973. Amer. Ent. Soc, Trans. 99: 281 (floral relationships). 

 quintilis Robertson. Wis. and 111., west to N. Dak., S. Dak., Nebr., Colo, and Kans. Pollen: 



Polylectic, although exhibits a decided preference for the pollen and nectar of Amorpha 

 including A. canescens, A. fruticosa, but visits other flowers including Apocynum 

 cannabinum. Chrysanthemum leucanthemum, Crataegus, Drymocallis arguta. 

 Echinacea angustifolia, Erigeron ramosus, Pastinaca sativa, Ptelea, Pycnanthemum 

 flexuosum, P. linifolium, Salix, Symphoricarpos, Zizia aurea. 

 Andrena quintilis Robertson, 1898. Acad. Sci. St. Louis, Trans. 8: 46. 9. 



Taxonomy: Robertson, 1902. Amer. Ent. Soc, Trans. 28: 189. 9 (key). —Mitchell, 1960. N. C. 

 Agr. Expt. Sta. Tech. Bui. 14: 195-196, fig. 35, table 5 (redescription). —LaBerge, 1973. 

 Amer. Ent. Soc, Trans. 99: 281-284, figs. 1, 6, 32-33 (redescription). 



Biology: LaBerge, 1973. Amer. Ent. Soc, Trans. 99: 284 (floral relationships). 

 rehni Viereck. Que. and Ont., south to G., west to Wis. Pollen: Apparently polylectic, visits 

 flowers of Aruncus dioecium, Castanea pumila, Ceanothus, Chrysanthemum 

 leucanthemum, Cicuta maniculata, Hydrangea, Ilex opaca, Quercus prinoides, Salix. 

 Andrena rehni Viereck, 1907. Ent. News 18: 284. 9. 



