2034 Hymenoptera in America North of Mexico 



confertiflonim, E. lanatum, Eucnide, Gilia multicaiilis, Grindelia camporum, 

 Gutierrezia, Helenium bigelovii, Helianthella californica, Heliantfms gracilentus, 

 Hyptis emoryi. Iris, Lasthenia chrysostoma, Layia platyglossa var. breviseta, 

 Malacothrix, Mimulus guttatus, Penstemon, Phacelia minor, Plialacoseris bola7ideri, 

 Ranunculus califomicus, Rhus trilobata, Senecio integerrimus, S. lugens, Siiybuni 

 marianum. Sisymbrium irio, Sonchus oleraceus, Sphaeralcea ambigua, Stenotopsis 

 linearifolius. Taraxacum officinale. Verbena, Viguiera laciniata, Wyethia. 



Osmia coloradensis Cresson, 1878. Amer. Ent. Soc, Trans. 7: 105. 9. 



Osmia hypochrysea Cockerell, 1906. Amer. Mus. Nat. Hist., Bui. 22: 449. 9. 



Osmia hypochry sea Rohweri Cockerell, 1907. Ann. and Mag. Nat. Higt. (7) 19: 366. 9. 



Osmia pasadenae Cockerell, 1910. Ent. News 21: 122. S. 



Biology: Ruckes, 1956. Pan-Pacific Ent. 32: 122, 1 fig. —Rust, 1974. Wasmann Jour. Biol. 32: 



47-48 (nest architecture, cocoon, parasite). 

 georgica Cresson. Mass. to Mich., south to Fla. and Tex. Ecology: Nests in borings and glass 

 tubes. Parasite: Chrysura pacifica (Say). Pollen: Unknown, but visits flowers o{ Aronia, 

 Brassica, Cardamine, Chrysantheynnm leucanthemum, Claytonia, Coreopsis, Erigeron, 

 Erythronium, Fragaria, Geranium, Hydrangea, Krigia Linaria, Lupiiius, Mains, 

 Pynis, Ranunculus, Rubus, Salix, Senecio, Taraxacum, Verbena, Vicia. Predator: 

 Camponotus sp., C rematogaster sp. 



Osmia georgica Cresson, 1878. Amer. Ent. Soc, Trans. 7: 105. 9. 



Osmia (Gnathosmia) louisianae Cockerell, 1901. Canad. Ent. 42: 171. 9. 



Biology: Hartman, 1944. Psyche, 51: 162-165 (nest architecture, life history). — Krombein, 



1967. Trap-nesting wasps and bees. p. 311 (nest architecture, life history). —Hawkins, 



1975. Kans. Ent. Soc, Jour. 48: 493-499, 3 figs, (nest architecture, life history, parasite, 



predator). 

 texana Cresson. N. Y., Mich., Ohio, Nebr., Tex., and B. C, Alta. and N. Dak., south to N. Mex., 

 Ariz, and Cahf.; Mexico (Baja California and Tamaulipas). Ecology: Nests in abandoned 

 cells oi Antkophora occidentalis Cr. in clay bank and in elderberry trap-nests; uses 

 masticated leaf material from Malva neglecta and Sphaeralcea coccinea for cell 

 partitions and cell plug. Parasite: Anthrax irroratus Say, Chrysis deyisa Cress., Homia 

 minutipennis Riley, Monodontomerus montivagus Ashm., Nemognatha sp., Stelis 

 montana Cress. Pollen: Apparently prefers pollen from Compositae, visits a wide 

 variety of flowers including Asclepias, Campanula, Carduus tenuiflorus, Calochortus 

 splendens, Centaurea, Chaenactis glabriuscula, Cirsium califomicurn, C. vulgare, 

 Coreopsis lanceolata, Cryptantha intermedia, Diplacus aurantiacus, Erigeron, 

 Eriodictyon califomicum, Eriophyllum lanatiim, Grindelia camporum, Frasera parryi, 

 Helianthus, Lotus, Marrubium vulgare, Monarda, Monardella villosa, Parkinsonia 

 aculeata, Penstemon, Phalacoseris bolanderi, Rubus leucodermis, Senecio, Stenotopsis 

 linearifolius, Sidalcea malvaeflora, Viguiera laciniata, V. multiflora, Wyethia 

 helenioides. Predator: Trichodes simulator (Horn). 



Osmia texana Cresson, 1872. Amer. Ent. Soc, Trans. 4: 261. 6. 



Osmia mandibularis Cresson, 1878. Amer. Ent. Soc, Trans. 7: 102. 9. 



Osmia faceta Cresson, 1878. Amer. Ent. Soc, Trans. 7: 103. i. 



Osmia davidsoniella Cockerell, 1905. Canad. Ent. 37: 370. 6. 



Biology: Hicks, 1926. Colo. Univ., Studies 15: 217 (nest). -Mickel, 1928. Ent. News 39: 69 

 (nest). — Hobbs, Nummi and Virostek, 1961. Canad. Ent. 93: 143 (nest, parasite). —Rust, 

 1974. Wasmann Jour. Biol. 32: 54-56 (nest architecture, life history, parasites). 



Genus OSMIA Subgenus CEPHALOSMIA Sladen 



Cephalosmia Sladen, 1916. Canad. Ent. 48: 270. 



Type-species: Osmia ynontana Cresson. Monotypic (,=Osmia armaticeps Cresson). 



Revision: Rust, 1974. Wasmann Jour. Biol. 32: 56-85, figs. 5-6, 27-45, tables 7-9. 



Biology: Rust, 1974. Wasmann Jour. Biol. 32: 58 (summary of information on life histories). 



