Superfamily APOIDEA 2071 



inimica sayi Cresson. Pa. to Fla., west to Idaho and Calif.; Mexico. Ecology: Nests in borings, 

 and closing plug is 5mm. thick consisting of leaf cuttings, pebbles, and leaf pulp. Pollen: 

 Polylectic, especially on flowers of the family Compositae (Heliantheae, Cynarieae, 

 Eupatorieae), visits a wide variety of these and other flowers including Arctiinn, Anter, 

 Bidens, Blephilia, Braimeria, Cephalanthus, Chrysopsis mariana, Ckrysothamnus 

 nauseosus co7isimilis, Cleome, Coreopsis stellata, Gilia, Gutierrezia califoniica, 

 Haplopappiis, Heleniuvi, Helianthus petiolaris, Heliopsis helianthoides, Heterotkeca, 

 Kallstroemia grandiflora, Lepachys, Liatris, Lythrum, Marrubium vulgare, Melilotus 

 alba, Penstemon, Petalostemon, Pycnanthemum, Rudbeckia, Senecio, Silphium, 

 Solidago, Strophostyles, Teucrium, Verbena, Verbesina encelioides, Vemoyiia 

 fasciculata, V. glauca, Vicia, Viguiera, Zexmenia. 



Megachile sayi Cresson, 1878. Amer. Ent. Soc, Trans. 7: 119. 6, 9. 



Megachile heterodonta Cockerell, 1900. Ann. and Mag. Hist. (7) 6: 18. 9. 



Megachile sayi paludicola Cockerell, 1911. U. S. Natl. Mus., Proc. 40: 254. 9. 



Megachile sayi var. sancta Cockerell, 1912. Ann. and Mag. Nat. Hist. (8) 10: 487. cJ. 



Biology: Krombein, 1967. Trap-nesting wasps and bees, pp. 332-334 (life history, nest 



architecture, supersedure). — Medler and Lussenhop, 1968. Wis. Univ. Res. Bui. 274: 23-24 



(life history, nest). 

 mellitarsis Cresson. B. C, Wash., Oreg., Calif., Nev., Colo., N. Mex., Ariz. Pollen: Apparently 

 polylectic, visits flowers of Aster, Ckrysothamnus, Encelia, Eriogonum, Phacelia, 

 Solidago multiradiata. 



Megachile mellitarsis Cresson, 1878. Amer. Ent. Soc, Trans. 7: 121. 6. 



Megachile terrestris Cockerell, 1908. Ann. and Mag. Nat. Hist. (8) 1: 260. 9. Preocc. 



Megachile geophila Cockerell, 1908. Canad. Ent. 40: 460. N. name. 

 newberryac Cockerell. N. Mex., Ariz., Calif., Mexico, deserts. Ecology: Nests in holes in 

 Prosopis and uses pieces of leaves cut from Celtis for cell construction. Pollen: 

 Apparently polylectic, visits flowers of Acacia greggii, Asclepias, Aster, Cercidium 

 torreyanuyyi, Encelia, Funastrum, Helenium, Larrea tridentata, Melilotus alba, Olneya 

 tesota, Opuntia, Pittosporum, Prosopis glayidulosa var. torreyanum, P.juliflora, P. 

 pubescens, Senecio douglasii, Verbesiyia encelioides. 



Megachile newberryac Cockerell, 1900. Entomologist 33: 244. 6. 



Megachile howardi Cockerell, 1919. U. S. Natl. Mus., Proc. 55: 216. i (9 misdet.). 



Biology: Butler, 1965. Ariz. Agr. Exp. Sta. Tech. Bui. 187: 14 (nest). 

 policaris Say. Fla., La., Nebr., Kans., Okla., Tex., Colo., N. Mex., Ariz., Calif.; Mexico. Ecology: 

 Uses leaflets from Eysenhardtia polystachya. Mimosa biuncifera, and Prosopis for plug 

 construction; nests in trap nests, the larvae develop amicably in a single large brood cell 

 with no apparent cannibalism. Parasite: Coelioxys texana Cress., Leucospis affinis Say, 

 Melittobia chalybii Ashm. Pollen: Polylectic, especially flowers of the Compositae 

 (Heliantheae), but in some localities uses pollen solely from Prosopis for nest provision; 

 visitation records include Acacia, Amorpha fruticosa, Asclepias, Bacchaiis, Bidens, 

 Brauneria pallida, Chrysothamnus, Condalia, Coreopsis lanceolata, Croton 

 califomicus, Encelia califomica, Erigeroyi, Eriogonum inflatum, Gutierrezia sarothrae, 

 Haplopappus acradenius, Helianthus, Larrea tridentata, Melilotus, Oenothera, Opuntia, 

 Palafoxia linearis, Petalostemon, Salsola, Salvia ballotaeflora, Senecio douglasii, 

 Silphium, Solidago, Tamarix, Verbeyia, Verbesina encelioides, Viguiera multiflora. 

 Predator: Pyemotes ventricosus (Newport). 



Megatchile policaris Say, 1831. Descr. New Spp. No. Amer. Ins. Found in La. by J. 

 Barabino, p. 17. 9. 



Megachile pollicaris Say, 1837. Boston Jour. Nat. Hist. 1: 406. S. Emend. 



Megachile grandis Cresson, 1872. Amer. Ent. Soc, Trans. 4: 268. 9. Preocc. 



Megachile pollicaris var. perexima Cockerell, 1900. Ann. and Mag. Nat. Hist. (7) 6: 12. S. 



Megachile vallorum Cockerell, 1900. Ann. and Mag. Nat. Hist. (7) 6: 18. 9. 



Biology: Krombein, 1967. Trap-nesting wasps and bees, pp. 334-337, pi. 19, figs. 92-97 (life 

 history, nest architecture, larval food, supersedure, parasite). — Hurd and Linsley, 1975. 

 Smithsn. Contrib. Zool. 193: 38 (floral relationships). 



