2056 Hymenoptera in America North of Mexico 



polylectic, especially Compositae and Leguminosae; visitation records include Baptisia 

 tinctoria, Carduus undulatus, Inula helenium, Lathynis i/enosHS, Medicago satiim, 

 Nepeta cararia, Penstemon, Polyvinia uvedalia, Rhododendron, Rubus strigosus, R. 

 villosiis, Sanicula marylandica, Taraxacinii officinale, Tephrosia virginiana, Vemonia. 



Megachile simplex Provancher, 1882. Nat. Canad. 13: 229. 6. Preocc. 



Megachile inermis Provancher, 1888. Addit. Corr. Faune Ent. Canada, Hym., p. 323. 6. 



Megachile simplicissima Dalla Torre, 1896. Cat. Hym., v. 10, p. 449. N. name. 



Megachile sapellonis Cockerell, 1900. Ann. and Mag. Nat. Hist. (7) 6: 7. 9. 



Megachile temporalis Friese, 1903. Ztschr. System. Hym. Dipt. 3: 247. 6 (9 misdet.). 



Megachile decipiens Lovell and Cockerell, 1907. Psyche 14: 19. 6. 



Taxonomy: Titus, 1906. Ent. Soc. Wash., Proc. 7: 150 (synonymy). 



Biology: Stephen, 1955. Econ. Ent., Jour. 48: 543 (effectiveness as polHnator of alfalfa). 

 — Stephen, 1956. Pan-Pacific Ent. 32: 98-101 (nest). — Koerber and Medler, 1958. Wis. 

 Acad. Sci., Arts and Letters 47: 56 (life history). -Medler, 1958. Canad. Ent. 90: 325-327, 1 

 fig. (life history). —Medler, 1958. Ent. News 66: 21 (parasite). — Fye, 1965. Canad. Ent. 97: 

 874-875, tables 2-4 (life history, nest architecture, sex ratio, parasite). —Medler and 

 Lussenhop, 1968. Wis. Univ. Res. Bui. 274: 22-23 (life history, parasite). 

 montivaga Cresson. N. S. to N. C, west to B. C. and Calif.; Mexico. Ecology: Uses petals of 

 Clarkia for nest construction. Parasite: Coelioxys insita Cress., C. rufitarsis Sm., 

 Leucospis affinis Say, Nemognatba dubia LeC, Phaenaera sp. Pollen: Polylectic, 

 especially Compositae, visits flowers of Argemone intermedia, A. platyceros, Asclepias, 

 Aster parishii, Blephilia, Brauneria, Campanula, Carduus undulatus, Centaurea jacea, 

 C. solstitialis, Chaenactis artemisiaefolia, Chilopsis linearis, Chrysopsis villosa, 

 Chrysothamnus, Cirsium californicuyn, C. lanceolatum, Clarkia amoena huntiana, C. 

 biloba, C. cylindrica, C. dudleyana, C. elegans, C. rubicunda, C. unguiculata, C. 

 viminea, C. williamsoni, Cleome, Convolvulus occidentalis. Coreopsis stellata, 

 Cryptantha intermedia, Dianthera, Echinacea, Epilobium, Euphorbia albomarginata. 

 Geranium maculatum, Gilia, Grindelia camporum, G. hallii, Gutierrezia, Haplopappus 

 bloomeri var. angustatus, Hedonia, Helenium bigelovii, Helianthus annuus, H. 

 gracilentus. Iris hartwegii, Lactuca, Lotus scoparius, Marrubium vulgare, Medicago 

 sativa, Melilotus, Monarda, Monardella, Oenothera, Opuntia, Palafoxia linearis, 

 Parthenium, Penstemon, Phacelia, Polymnia uvedalia, Rosa, Rudbeckia, Salix, Salvia 

 carduacea, S. mellifera, Scrophularia, Senecio douglasii, Sidalcea, Silphimn, Solidago, 

 Trifolium, Verbena lasiostachys, Verbesina encelioides, Vemonia, Viguiera laciniata, V. 

 multiflora. 

 Megachile montivaga Cresson, 1878. Amer. Ent. Soc, Trans. 7: 124. 9, cJ. 



Biology: Hicks, 1926. Colo. Univ. Studies 15: 232 (nest). 

 nivalis Friese. Alaska, south to Oreg., east to Que. and Maine. Parasite: Anthrax irroratus 

 Say. Pollen: Unknown, but visits flowers oi Elaeagnus, Taraxacum. 

 Megachile nivalis Friese, 1903. Ztschr. System. Hym. Dipt. 3: 246. 9 {i misdet.). 

 Megachile (Anthemois) santiamensis Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 311. 9. 



Taxonomy: Mitchell, 1942. Pan-Pacific Ent. 18: 115. cJ, 9. 

 relativa Cresson. Mackenzie to Newfoundland, south to Calif., Ariz., Ill, Tenn., and Ga. 



Ecology: Nests in borings in wood. Parasite: Coelioxys banksi Cwfd., C.funeraria Say, 

 C. modesta Sm., C. moesta Cress., C. porterae Ckll., Dibrachys macnlipennis Szelenyi, 

 Leucospis affinis Say, Melittobia chalybii Ashm., Pteromalus venustus Walker. Pollen: 

 Apparently polylectic, visits flowers of Amorpha, Apocynum, Aster punicus, A. 

 untbellatus, Baptisia, Besseya plantagineae, Brassica, Chamaenerion angustifolium, 

 Chrysanthemum leucanthemum, Epilobium, Erigeron coulteri, Frasera, Geranium, 

 Gilia, Houstonia, Iris, Melilotus, Mertensia, Phacelia, Physalis, Prenanthes, 

 Ranu7iculus, Rhodora, Rosa, Rubus, Rudbeckia hirta, Senecio subyiudus, Solidago, 

 Trifolium, Valeriana. 



Megachile relativa Cresson, 1878. Amer. Ent. Soc, Trans. 7: 126. 9. 



Megachile (Xanthosarus) exclamans Viereck, 1916. Conn. State Geol. and Nat. Hist. 

 Survey, Bui. 22: 743. 9. 



Megachile aspera Mitchell, 1924. Elisha Mitchell Sci. Soc, Jour. 40: 158. 9. 



