Superfamily APOIDEA 2053 



gentilis Cresson. Tex. to Calif., Nev., Oreg. and Idaho, adventive and established in Hawaii. 



Ecology: Nests in twigs o{ Sanibucus and also in trap-nests. Parasite: Anthrax atriplex 

 Marston, A. daphne (0. S.), A. irroratus Say, A. melanopogon (Bigot), Aiitranis notata 

 sierrae Townes, Coelioxys novomexicana Ckll., Lencospis a(finis Say, Tetrastichus 

 megachilidis Burks. Pollen: Apparently polylectic, visits flowers of Acacia, Amorpha 

 fruticosa, Asclepias erosa, A. speciosa, Aster canescens, A. sphiosiis, Bigelovia, 

 Baccharis, Brassica geniculata, B. incana, Cercidium, Cereus engeima7inii, 

 Chamaebatia foliolosa, Chrysopsis fastigiata, Chrysothamnus, Clarkia amoena, C. 

 dudleyana, C. ungiiicnlata, Clematis, Cleomella obtitsifolia, Colliyisia tinctoria, 

 Condalia, Cordylanthus filifolius, C. nevinii, C. pilosus, C. rigidus, Croton califomicus, 

 Cryptantha intermedia, Dalea, Echi^iocactus, Erigeron stenophyllus, Eriogonum 

 fasciculatum, E. gracile, E. latifolium var. nuduyn, Eriophyllum confertiflorum, 

 Grindelia camporum, Gutierrezia sarothrae, Haplopappus acradenius, H. arborescens, 

 H. bloomeri var. aiigustatus, H. vemonioides, Helenium bigelovii, Helianthus aintuus, 

 Hemizoiiia pungens, Heteromeles arbutifolia, Heterotheca grandiflora, Hyptis emoryi, 

 Larrea tridentata, Lathyrus splendens, Lepidiurn, Lessingia glandulifera, Lippia, Lotus 

 argophyllus, L. glaber, L. heermannii, L. nevadensis, L. purshianus, Lupinus longipes, 

 Marrubium vulgare, Medicago sativa, Melilotus alba, M. indica, Monarda citriodora, 

 Nolina parryi, Opuyitia, Phacelia distans, P. heterophylla, P. ramosissima. Phyla 

 nodiflora var. rosea, Plitchea camphorata. Polygonum, Prosopis, Ratibida columnaris, 

 Rhamnus californica, Sapindus, Senecio donglasii. Sisymbrium altissimum, Solidago 

 confiiiis, S. occide^italis, Spraguea umbellatum, Swertia neglecta, Trifolium repens, T. 

 variegatum, Vauquelinia, Verbena lasiostachys, Verbesina, Viguiera multiflora, 

 Wislizenia refracta. Predator: Trichodes homi Wolcott and Chapin. 



Megachile gentilis Cresson, 1872. Amer. Ent. Soc, Trans. 4: 267. i. 



Megachile palmaruni Perkins, 1899. Fauna Hawaii., v. 1, p. 114. 6, 9. 



Megachile murinella Cockerell, 1908. Ann. and Mag. Nat. Hist. (8) 1: 263. 9. 



Biology: Bechtel, 1958. Pan-Pacific Ent. 34: 12 (nest, parasite). — Krombein, 1967. 



Trap-nesting wasps and bees, pp. 320-321, pi. 20, figs. 99-100 (nest architecture, life 



history, supersedure, parasites, predator). 

 lippiae Cockerell. Mont., Nebr., Tex., west to Utah and Calif. Ecology: Uses cuttings from rose 

 leaves for nest material. Pollen: Apparently polylectic, visits a wide variety of flowers 

 including Acacia, Agave, Althaea rosea, Amorpha, Asclepias, Aster, Baccharis, 

 Cercidium, Cirsiuni, Cucurbita, Erigeron, Eriogonum fasciculatum var. polifolium, 

 Haplopappus, Helenium, Helianthus, Hoffmanseggia, Hyptis emoryi, Larrea tridentata, 

 Lippia, Lotus, Marrubium vulgare, Medicago, Melilotus, Mortonia, Na7na, Nolina, 

 Opuntia, Petalostemon, Prosopis, Sapindus, Sphaeralcea, Symphoricarpos, Trifolium, 

 Verbesina. 



Megachile cleomis var. lippiae Cockerell, 1900. Ann. and Mag. Nat. Hist. (7) 6: 15. 9, cJ. 



Biology: Hurd and Linsley, 1975. Smithsn. Contrib. Zool. 193: 37 (floral relationship with 

 Larrea). 

 mendica mendica Cresson. Ont. and Maine to Fla., west to S. Dak., Colo., Ariz, and Calif. 

 Ecology: Nests in rose canes and trap nests. Parasite: Coelioxys octodentata Say, C. 

 sayi Robt, Melittobia chalybii Ashm., Physocephala marginata (Say). Pollen: Polylectic, 

 visits a wide variety of flowers, especially Compositae, Leguminosae, and Labiatae; 

 visitation records include Acerates, Agastache, Amorpha, Apios, Aralia, Asclepias 

 tuberosa. Aster, Baptisia, Bidens, Blephilia, Boltonia, Borrichia, Brassica nigra, 

 Brauneria, Buddleia campanula, Camassia, Cassia, Ceanothus, Cephalanthus, 

 Chaemaecrista, Chrysanthemum, Chrysopsis, Cicuta, Cirsium, Clematis, Cleomella 

 obtusifolia, Clethra, Conoclinum caelestinum. Coreopsis stellata, Cosinos, Crataegus, 

 Crotalaria, Cyrilla, Daucus, Desmodium, Diospyros, Elephantopus carolinianus, 

 Erigeron, Eriogonum, Eryngium, Eupatorium, Flaveria, Galactia, Gaura, Gaylussacia, 

 Geranium, Haplopappus, Helenium, Helianthus, Heliopsis helianthoides, Hypericum, 

 Hex, Impatiens, Ilea, Koellia mutica, Lepachys, Lespedeza, Linaria, Lupinus, Lycopus, 

 Lythrum, Marrubium vulgare, Medicago, Melilotus alba, Monarda, Nepeta, Nyssa, 

 Ocimum, Oenothera, Opuntia, Phacelia, Phaseolus, Polygala incamata. Polygonum, 



