Superfamily APOIDEA 1765 



nevadensis (Cockerell). B. C, Wash., Idaho, Oreg., Calif., Nev. Pollen: Unknown, but visits 

 flowers of Achillea lanulosa, Adenostojria fasciculatum, Angelica tomentosa, 

 Apocynum androsaemifolium, Baccharis douglasii, Ceanothus cuneatus, C. 

 integerrimus, C. soredatus, Centaurea melitensis, Cicuta, Collinsia, Cordylanthus 

 rigidus, Corethrogyne filaginifolia, Eriodictyon califomicum, E. crassifolium, E. 

 trichocalyx, Erigeron heterophyllus, Eriogonum latifolium nudtim, E. saxatile, E. 

 wrightii, Eriophyllum confertiflorum, Geranium richardsonii, Gnaphalium 

 califomic7im , Haplopappus arborescens, H. parishii, Holodiscus discolor, Horkelia 

 bemardina, Monardella linoides, M. odoratissima, Penstemon labrosus, Perideridia 

 gairdneri, Phacelia humilis, Potentilla glandulosa, Prunus ilicifolia, Rhamnus 

 califomica, R. crocea, Solidago califomica, S. occidentalis, Tetradymia canescens. 



Prosapis nevadensis Cockerell, 1896. Psyche 7 (sup.): 32. 6. 



Prosopis hesperipkila Cockerell, 1910. Ann. and Mag. Nat. Hist. (8) 5: 29. 6. 



Hylaeus oregonensis Bridwell, 1919. Hawaii. Ent. Soc, Proc. 4: 160. 9,6. 

 personatellus (Cockerell). Colo. (Corona and Ouray), Calif. (Sierra Nevada Mts.). Pollen: 



Unknown, but visits flowers of Aster, Brodiaea gracilis, Chrysothamnus nauseosus, 

 Erigeron pygmaeus, Eriogonum elatum, E. lobbii, E. mariifolium, E. nudum, E. 

 ovalifolium, Ivesia muiri, Monardella odoratissima, Penstemon davidsonii, P. 

 newberryi, Perideridia gairdneri, Potentilla glandulosa, Solidago multivadiata. 



Prosopis personatellus Cockerell, 1915. Ann. and Mag. Nat. Hist. (8) 16: 485. 9. 

 polifolii (Cockerell). Calif. Parasite: Eurytoma stigmi Ashm. Pollen: Unknown, but visits 

 flowers of Achillea millaefolium, Adenostoma fasciculatum, Alyssum maritimum, 

 Anaphalis margaritacea, Baccharis douglasii, B. emoryi, B. glutinosa, B. pilularis, B. 

 viminea, Ceanothus crassifolius, C. greggii, C. integerrimus, C. leucodermis, C. 

 soredatus, Chrysothanmus nauseosus. Coreopsis lanceolata, Cryptantha intermedia, 

 Dendromecon rigida, Erigeron canadensis, E. stenophyllus, Eriodictyon trichocalyx 

 lanatum, Eriogonum elongatum, E . fasciculatum, E. gracile, E. latifolium, E. 

 latifolium nudum, E. vimineum, Eriophyllum confertiflorum, Eryngium aristatulum. 

 Erysimum perenne. Euphorbia albomarginata, Gnaphalium beneolens, G. califomicum, 

 Gutierrezia califomica, G. sarothrae, Haplopappus arborescens, H. linearifolius, H. 

 parishii, Helenium puberulum, Heteromeles arbutifolia, Heterotheca grandiflora, 

 Lasthenia, Malacothrix tenuifolia, Melilotus alba, Mentha, Opuntia, Penstemon 

 Tr^ antirrhinoides, Perideridia, Phacelia distans, Prunus demissa, P. ilicifolia, 



Pyracantha, Rhamnus califomica, R. crocea, Rhtis diversiloba, R. laurina, R. trilobata, 

 Salix lasiolepis, Salvia, Sambucus caerulea, Scrophularia califomica, Sedum, Senecio 

 califomica, Solidago califomica, S. occidentalis, Sphenosciadium capitellatum, Swertia 

 parryi, Tetradymia cayiescens, Trichostema parishii. 



Prosopis polifolii Cockerell, 1901. Canad. Ent. 33: 281. 3. 



Hylaeus polifolii catalinensis Cockerell, 1938. Ann. and Mag. Nat. Hist. (11) 2: 150. S, 9. 

 wootoni (Cockerell). B. C. to Calif., Ariz., N. Mex.; Mexico (Chihuahua). Pollen: Unknown, but 

 visits flowers of Achillea lanulosa, Apocynum androsaemifolium, Aster canescens, 

 Calochortus paludicola, C. splendens, Ceanothus cordulatus, C. palmeri, 

 Chrysothamnus nauseosus, C. pumilius, C. viridulus, C. viscidiflorus puberulus, 

 Eriodictyon trichocalyx, Eriogonum davidsoni, E. fasciculatum, E. nudum, E. 

 subscaposum, E. umbellatum, E. wrightii, E. wrightii membranaceum, Eriophyllum, 

 Erysimum asperum, Haplopappus arborescens, H. uniflorus gossypinus, H. parishii, 

 Horkelia fusca, Lepidium virginicum, Mentzelia albicaulis, Phacelia imbricata, 

 Potentilla glandulosa. Ranunculus californicus, Rhamnus califomicus, Solidago 

 califomica, S. confinis, Tetradymia canescens. 



Prosapis wootoni Cockerell, 1896. Psyche 7 (sup.): 26. S. 



Prosapis divergens Cockerell, 1896. Psyche 7 (sup.): 29. 6. 



Prosopis clandestinus Viereck, 1903. Amer. Ent. Soc, Trans. 17: 65. 6. 



Prosopis excavata Swenk and Cockerell, 1910. Ent. News 21: 70. 9. 



Hylaeus perparvus Cockerell and Sumner, 1931. Amer. Mus. Novitates 490: 10. 6. 



Species Group Unassigned 



seclusus Cockerell and Sumner. Colo. 



Hylaeus seclusus Cockerell and Sumner, 1931. Amer. Mus. Novitates 490: 12. 6. 



