2068 Hymenoptera in America North of Mexico 



Astragalus parishii, Bidens laevis, Castilleia mmiata, Calendula, Centaurea 

 solsiitialis, Chrysopsis villosa, Chrysothamnus 7iauseosus, C. n. speciosus, C. 

 viscidiflorus typicus, Cirsium anderso7iii, C. califoniicum, C. lanceolatum, C. 

 tioganum, Clarkia viviinea, Cleome serrulata, Coreopsis lanceolata, Cosmos 

 bipinyiatus, Dicentra chrysantha, Encelia farinosa, Epilobium angustifolium, Erigeron 

 glaucus, Eriogonum fasciculatum, E.f. var. polifolium, E. latifolium var. nudum, 

 Eschscholzia califomica, E upatorium occidentale, Gormania obtusata, Grindelia 

 platyphylla, G. stricta var. procumbens, Gutierrezia sarothrae, Haplopappus 

 apargioides, H. venionioides, Helenium bigelovii, Helianthus an7iuus, H. petiolaris, 

 Horkelia bemardina, Lathyrus odoratus, Lotus argophyllus, L. glaber, L. oblongifolius, 

 Lotus scoparius, Lupiiius paynei, Medicago sativa, Melilotus officinalis, Microseris 

 nutans, Mimulus tillingii, Phacelia frigida, P. ramosissi7na, Pluchea caynpliorata, 

 Pote7itilla, Robinia, Rosa californica, Se^iecio douglasii, S. ijitegerriynus, Solidago 

 califomica, S. confinis, S. tnultiradiata, S. occidentalis, Spiraea deiisiflora, 

 Stephaiiomeria virgata, Syynphoricarpos, Taraxacum officinale, Trichostema 

 lanceolatum, T. i7ivolucratu7n, Ve7-be7ia, Vicia, Wyethia. 



Megachile perihirta Cockerell, 1898. Ann. and Mag. Nat. Hist. (7) 1: 126. S. 



Megachile latima7ius gri7ideliaru7n Cockerell, 1904. Ent. News 15: 33. 9. 



Biology: Hicks, 1926. Colo. Univ. Studies 15: 233 (nest, parasite). —Hicks, 1936. Canad. Ent. 

 68: 49 (nest, parasite). — Hobbs, 1957 (1956). Canad. Ent. 88: 625-631 (life history, 

 parasites). 



Genus MEGACHILE Subgenus LEPTORACHIS Mitchell 



Megachile subg. Leptorachis Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 301, 308. 

 Type-species: Megachile petu!a7is Cresson. Orig. desig. 

 petulans Cresson. N. J. to Fla., west to N. Dak., Nebr., and Ariz., Mexico. Pollen: Polylectic, 

 visits many flowers, especially Compositae, Labiatae, Leguminosae; visitation records 

 include flowers of Achillea, Apocy7iuyn, Asclepias, Aster, Baptisia, Bideiis, Blephilia, 

 Buddleia, Brau7ieria, Ca7Hpa7iula rotu7idifolia. Cassia, Cephalanthus, Cha7naecrista, 

 Chrysa7ithe7>ium Ieuca7ithe7num, Cicuta, Cirsium, Coreopsis sfellata, Crotalaria, 

 Desmodium, Eryngium, Flaveria, Galactia, Gerardia, Gri7idelia, Hele7iiu7n, Helia7ithus 

 atrorube7is, Houstonia purpurea, Hydrolea, Hypericu7n, Hyptis, Ilex, Koellia, Lespedeza 

 repe7is, Liatris, Lobelia, Ludwigia, Lycopus, LythTiim, Melilotus alba, Nepeta, 

 Pasti7iaca, Phaseolus, Polygonum, Psoralea, Pyc7ia7ithe7nu7n, Rhodode7idro7i, Rhus, 

 Rubus, Rudbeckia, Se7iecio, Silphiu7n, Solidago, Strophostyles, Tephrosia, Trifolitim, 

 Verbe7ia, Verbesiyia, Veni07iia glauca, Vicia. 



Megachile petula7is Cresson, 1878. Amer. Ent. Soc, Trans. 7: 127. <?. 



Megachile ynexicana Cresson, 1878. Amer. Ent. Soc, Trans. 7: 127. 9, d. 



Genus MEGACHILE Subgenus PSEUDOCENTRON Mitchell 



Megachile subg. Pseudocentron Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 303, 307. 

 Type-species: Megachile pruina Smith. Orig. desig. 

 bidentata (Fabricius). Supposedly North American, but probably Neotropical. 

 Andre7ia bide7itata Fabricius, 1775. Syst. Ent., p. 377. 6. 



morio Smith. "North America." 



Megachile 7iiorio Smith, 1853. Cat. Hym. Brit. Mus., v. 1, p. 189. 9. Probably a form of 

 prui7ia. 

 pruina nigropinguis Mitchell. Tex. 



Megachile (Pseudoce7itro7i) prui7ia var. 7iigropinguis Mitchell, 1937. Amer. Ent. Soc, 

 Trans. 63: 68. 9 . 

 pruina pruina Smith. N. C, Ga., Fla., Bermuda. Pollen: Unknown, but visits flowers of 



Asclepias tuberosa, Crotalaria, Croto7i li7iearis, Cuscuta, Dalbergia ecastophylluyn, 

 Gaillardia, Galactia floridana, Helia7ithus, Melaiithera parviflora, Ocitnum, Rhus, 

 Strophostyles, Vento7iia blodgettii. 

 Megachile pnii7ia Smith, 1853. Cat. Hym. Brit. Mus., v. 1, p. 190. 9. 

 Megachile piuguis Cresson, 1878. Amer. Ent. Soc, Trans. 7: 125. 6. 



