2180 Hymenoptera in America North of Mexico 



Sphaeralcea ambigua, Stephanomeria cichoriacea, S. virgata, Thelypodium 

 linearifolium, Trichostema, Trifolium microcephaluni, Verbena lasiostachys, V. 

 prostrata, Viola nuttallii, Wedelia incamata, Wyethia. 



Ceratina nanula Cockerell, 1897. Acad. Nat. Sci. Phila., Proc. 49: 352. 6. 



Ceratina nanula rigdenae Michener, 1936. Amer. Mus. Novitates 844: 3. 9, S. 



Biology: Hicks, 1926. Colo. Univ., Studies 15: 251 (nest). 

 shinnersi Daly. Tex. Pollen: Apparently polylectic, visits flowers of Amblyolepis setigera, 



Amphiachyris, Argemone intermedia, A. mexicana, Aster exilis, Astragalus, Caliirhoe 

 involucrata, Cercis canadensis, Chamaesaracha conioides, C hrysanthenuim maximum, 

 Chrysopsis pilosa, Citrullis vulgaris. Coreopsis, Croptilon divaricatum var. 

 divaricatum, Cucumis melo, Erigeron strigosus, Eupatorium serotinum, Helianthus 

 annuus, Heterotheca subaxillaris, Leucophyllum frutescens, Marilaunidium 

 organifolium, Mairnibium vulgare, Melilotus alba, Mentha spicata, Monarda, 

 Neomphila phacelioides, Opuntia Macrorhiza, Phacelia, Phyla incisa, Prosopis 

 glandulosa, Pyrrhopappus geiseri, Rubus trivialis, Salix, Scutellaria, Sophora affinis, 

 Sphaeralcea angustifolia, Tamarix gallica, Tetragonotheca ludoviciana, Tetrayieurus 

 linearifolia, T. scaposa, Verbesiiia encelioides, Vicia ludoviciana, Vitex agnus-castus. 

 Ceratina shinnersi Daly, 1973. Calif. Univ. Pubs. Ent. 74: 90, figs. 13f, 21, 22m-N, 28b. $, 

 6. 



Species Group Pacifica 



pacifica Smith. B. C. to Calif., Idaho and Wyo., south to Ariz. Parasite: Aprostocetus 



americanus Ashm.?, Rhydinofoemis kaweahensis Bradley. Pollen: Apparently polylectic, 

 visits flowers oi Agave nevadensis, Arctostaphylos, Asclepias, Aster andersonii, 

 Balsamorhiza sagittaria, Calochortus luteus, C. macrocarpus, C. nuttallii, Ceanothus 

 fendleri, Centaurea melitensis, Chaenactis, Chrysothamnus, Cirsium arvense, C. 

 vulgare. Convolvulus occidentalis. Clematis linguisticifolia, Cleome lutea, 

 Corethrogyne, Cryptantha intermedia, C. lepida, C. racemosa, Encelia farinosa, 

 Erigeron Eriodictyon trichocalyx var. Ia7iatum, Eriogonum heemiannii, Grindelia 

 camporum, G. squarrosa, Haplopappus linearifolius, Helianthus annuus, H. petiolaris, 

 Lomatium dissectum, Malacothrix tenuifolia, Navarretia heterodoxa, Medicago sativa, 

 Mentzelia, Opuntia basilaris, Penstemon leonardi, Phacelia linearis, P. tanacetifolia, 

 Rubus leucodermis, Senecio, Sisymbrium altissimum, Solidago petradoria, Sphaeralcea 

 ambiguua, S. angustifolia, Stanleya pinnata, Stephanomeria virgata, Trifolium, 

 Verbena lasiostachys, Viguiera nevadensis, Wyethia glabra. 



Ceratina pacifica Smith, 1907. Amer. Ent. Soc, Trans. 33: 123. 9. 



Ceratina subpimctigena Michener, 1936. Amer. Mus. Novitates 844: 6. 9, 6. 



Ceratina utahensis Michener, 1936. Amer. Mus. Novitates 844: 7. 9. 

 punctigena Cockerell. Calif. Parasite: Aprostocetus americanus Ashm.?, C oelopencyrtus 

 hyleoleter Burks, Eurytoma apiculae Bugbee, Grotea califomica Cress. Pollen: 

 Apparently polylectic, visits flowers of Agoseris glauca, Aplopappus parishii, 

 Arctostaphylos patula, Asclepias erosa, Calendula, Calochortus, Ceanothus, Chaenactis, 

 Cirsium calif omicum, Clarkia dudleyana. Convolvulus occidentalis. Coreopsis 

 lanceolata, Corethrogyne virgata, Croton califomicus, Cryptantha intermedia, 

 Cucurbita, Encelia farinosa, Eriodictyon trichocalyx var. Ia7iatum, Eriophyllum 

 tridactylum, Gilia, Hazardia squarrosa, Helianthus gracilentus, H. occidentalis, Hulsea 

 callicarpha, Malacothrix saxatilis, M. s. teyiuifolia, Penstemon incertus, P. spectabilis, 

 Phacelia, Rhus trilobata, Salvia mellifera, Scrophularia califomica, Senecio douglasii, 

 Sphaeralcea, Stenotopsis linearifolius, Stephanomeria virgata. Predator: Oxyopes 

 scalaris Hentz. 



Ceratina neomexicana punctigena Cockerell, 1916. Pomona Jour. Ent. Zool. 8: 62. 9 . 



Taxonomy: Michener, 1936. Amer. Mus. Novitates 844: 5. 9, S. 



Biology: Linsley, MacSwain and Raven, 1963. Calif. Univ. Pubs. Ent. 33: 47 (floral 

 relationships). —Bugbee, 1966. Pan-Pacific Ent. 42: 211 (natural enemies). 



