2174 Hymenoptera in America North of Mexico 



Type-species: Centris rhodoleuca Cockerell. Orig. desig. 



Taxonomy: Snelling, 1974. Los Angeles Co. Mus., Contrib. Sci. 259: 5-20, figs, (key to N. 

 Amer. spp.). 

 angustifrons Snelling. Ariz. (Huachuca Mts.). 



Centris (Paracentris) angustifrons Snelling, 1966. Los Angeles Co. Mus., Contrib. Sci. 112: 

 13. 9. 

 aterrima Smith. South. Ariz.; Mexico. 



Centris aterrima Smith, 1854. Cat. Hym. Brit. Mus., v. 2, p. 378. S. 

 atripes Mocsary. Tex., N. Mex., Ariz., Calif. (Brawley); Mexico to Costa Rica. Pollen: Polylectic, 

 visits flowers of Dalea, Hyptis, Kallstroemia grandiflora, Koeberlinia spinosa, Larrea 

 tridentata, Solanum elaeagnifolium. 

 Centris atripes Mocsary, 1899. Termes. Fuzetek 22: 254. S . 

 Centris atriventris Fox, 1899. Acad. Nat. Sci. Phila., Proc. 51: 68. 9, d. Preocc. 

 Centris foxi Friese, 1900. K. K. Naturhist. Hofmus., Ann. 15: 350. N. name. 

 caesalpiniae Cockerell. Tex., N. Mex., Ariz.; Mexico (Chihuahua). Pollen: Polylectic, visits 



flowers of Acacia, Asclepias brachystephana, Baccharis, Cevallia sinuata, Eriogonum, 

 Hoffmanseggia densiflora, H.falcaria, Robinia, Solanum elaeagnifolium, S. rostratzim,, 

 Verbesina encelioides. 

 Centris caesalpiniae Cockerell, 1897. Ann. and Mag. Nat. Hist. (6) 19: 394. 9, cJ. 

 Centris morsei Cockerell, 1897. Acad. Nat. Sci. Phila., Proc. 49: 355. 6 . 

 Centris marginata Fox, 1899. Acad. Nat. Sci. Phila., Proc. 51: 67. <J. 

 cockerelli cockerelli Fox. Tex., N. Mex.; Mexico (Chihuahua, Nuevo Leon, Tamaulipas); 



intergrades with following subspecies in western N. Mex., Chihuahua, eastern Ariz, and 

 Sonora. Pollen: Presumably polylectic, visits flowers of Dalea formosa, Hoffmanseggia, 

 Prosopis glandulosa var. torreyanum. 

 Centris Cockerelli Fox, 1899. Acad. Nat. Sci. Phila., Proc. 51: 68. 9. 

 cockerelli resoluta Cockerell. Ariz., Nev., south. Calif.; Mexico (Baja California and Sonora). 

 Pollen: Polylectic, chiefly Cercidium torreyanum, Dalea, Krameria, Larrea tridentata, 

 Prosopis, but visits other flowers for nectar and possibly pollen. 

 Centris cockerelli resoluta Cockerell, 1923. Calif. Acad. Sci., Proc. (4) 12: 76. 9, cJ. 



Biology: Alcock, Jones and Buchmann, 1976. Kans. Ent. Soc, Jour. 49: 471-472, fig. 3, table 1 



(nest architecture, nesting behavior). 

 lanosa Cresson. Kans., Tex., and western Fla. 



Centris lanosa Cresson, 1872. Amer. Ent. Soc, Trans. 4: 284. 6. 



Centris subhyalina Fox, 1899. Acad. Nat. Sci. Phila., Proc. 51: 69. 9. 



Centris birkmannii Friese, 1900. Termes. Fuzetek 23: 44. <J, 9. 

 mexicana Smith. Ariz., N. Mex., Tex.; Mexico (Chihuahua, D. F., Durango, Michoacan, Nuevo 

 Leon, and Sonora). Pollen: Unknown, but visits flowers of Cevallia sinuata, 

 Hoffmanseggia densiflora, Melilotus alba, Menodora scabra. 



Centris mexicana Smith, 1854. Cat. Hym. Brit. Mus., v. 2, p. 378. "9" = 6. 

 rhodopus Cockerell. Tex., N. Mex., Ariz., south. Calif.; Mexico (Baja California, Chihuahua, and 

 Sonora). Pollen: Polylectic, visits flowers of a wide variety of plants including Acacia 

 greggii, Asclepias, Bebbia juncea, Centaurea, Cercidium torreyanum, Cevallia sinuata, 

 Chilopsis linearis, Croton califomicus, Dalea schottii, D. spinosa, Eriogonum inflatum, 

 Eriodictyon, Eriophyllum, Hoffmanseggia densiflora, H.falcaria, Larrea tridentata, 

 Lupinus, Palafoxia linearis, Prosopis glandulosa, Solanum elaeagnifolium, S. 

 rostratum, Solidago confinis, Tamarix, Wislizenia refracta. 



Centris caesalpiniae var. rhodopus Cockerell, 1897. Ann. and Mag. Nat. Hist. (6) 19: 394. 

 9,6. 



Centris rhodopus var. pulchrior Cockerell, 1900. Canad. Ent. 32: 363. 6. 



Centris rhodoleuca Cockerell, 1923. Calif. Acad. Sci., Proc. (4) 12: 75. 6 . 



Biology: Alcock, Jones and Buchmann, 1976. Kans. Ent. Soc, Jour. 49: 469-471, figs. 1, 2, 

 table 1 (nest architecture, nesting behavior). 



