1740 Hymenoptera in America North of Mexico 



pimarum Cockerell and Rohwer. S. Dak. through Colo., Utah, Nev. to Calif, south to west. 

 Te.x. and Ariz.; Mexico (Chihuahua, Coahuila, Durango). 

 Eucerceris pimarum Cockerell and Rohwer, 1908. In Rohwer, Canad. Ent. 40: 326. 9. 

 Eiicerceris apicata Banks, 1915. Canad. Ent. 47: 404. 6. 

 rubripes Cresson. Rocky Mts. to east. Nebr. and Kans., north to Canada and south to Tex. 

 Prey: Peritaxia sp. 

 Eucerceris i-^ubripes Cresson, 1879. Amer. Ent. Soc, Trans. 7: Proc, p. xxiii. 6. 

 Eucerceris unicornis Patton, 1879. U. S. Geol. and Geog. Survey, Bui. 5: 359. 9. 

 Apliilanthops marginipennis Cameron, 1890. Biol. Cent.-Amer., Hym., v. 2, p. 105. 6. 



Biology: Scullen, 1968. U. S. Natl. Mus., Bui. 268: 56 (prey). — Alcock, 1975. Kans. Ent. Soc, 

 Jour. 48: 538 (male mating strategy). 

 ruficeps Scullen. Cent. Calif., Nev. Ecology: Nests in hard-packed sand in abandoned burrows 

 of the bee Spliecodogastra aberrans (Cwfd.), makes up to 5 or more cells per nest, 

 stores 6-22 prey per cell. Parasite: Miltogrammini spp. Prey: Dysticlieus rotundicollis 

 Van Dyke, Sitona califomicus Fahr. 

 Eucerceris ruficeps Scullen, 1948. Pan-Pacific Ent. 24: 175. ?. 



Biology: Linsley and MacSwain, 1954. Pan-Pacific Ent. 30: 11-14 (nest, prey, parasites). 

 similis Cresson. Oreg., Calif., Nev., south. Idaho, west. Wyo., Colo. 



Eucerceris similis Cresson, 1879. Amer. Ent. Soc, Trans. 7: Proc, p. xxiv. 9,6. 

 Eucerceris barri Scullen, 1968. U. S. Natl. Mus., Bui. 268: 19, figs. 7, 65a-g. 9,6. 

 sinuata Scullen. South centr. Tex.; Mexico (Nuevo Leon, Coahuila). 



Eucerceris sinuata Scullen, 1939. Oreg. State Monog., Studies in Ent. 1: 47. 9. 

 superba bicolor Cresson. Alta., Mont., N. Dak., S. Dak., Wyo. Prey: Ophryastes sulcirostris 

 (Say), 0. sp. in sulcirostris-porosus complex. 

 Eucerceris bicolor Cresson, 1881. Amer. Ent. Soc, Trans. 9: Proc, p. xxxviii. 9. Preocc. in 



Cerceris. 

 Cerceris dichroa Dalla Torre, 1890. Wien. Ent. Ztg. 9: 199. 9. N. name. 



Biology: Scullen, 1939. Oreg. State Monog., Studies in Ent. 1: 40 (prey). —Scullen, 1968. U. S. 

 Natl. Mus., Bui. 268: 66 (prey). 

 superba superba Cresson. Rocky Mts. east to N. Dak., S. Dak., Nebr., Kans. 

 Eucerceris superbus Cresson, 1865. Ent. Soc. Phila., Proc. 5: 108. 6. 

 Eucerceris fulviceps Cresson, 1879. Amer. Ent. Soc, Trans. 7: Proc, p. xxiii. 9. 

 Eucerceris fulviceps var. rliodops Viereck and Cockerell, 1904. N. Y. Ent. Soc, Jour. 12: 

 88. 9. 

 tricolor Cockerell. Ariz., N. Mex., west Tex.; Mexico (Chihuahua, Coahuila, Hidalgo, Zacatecas). 

 Eucerceris uitiatifrons var. tricolor Cockerell, 1897. Entomologist 30: 136. 6. 



Biology: Alcock, 1975. Kans. Ent. Soc, Jour. 48: 538 (male mating strategy). 

 vittatifrons Cresson. Wash., Calif., Nev., Utah, Colo., Ariz., N. Mex., Oreg., Idaho. 



Eucerceris vittatifrons Cresson, 1879. Amer. Ent. Soc, Trans. 7: Proc, p. xxiv. S. 

 zonata (Say). New England States, N. Y., Ont. west to N. Dak., north, centr. States west to 

 Wyo. and Colo., Ark., Tex. Ecology: Makes multicellular nest of as many as 9 cells in 

 fine-grained friable sand, stores 3-7 prey per cell. Prey: Cleonus plumbeus LeC. 

 Philanthus zonata Say, 1823. West. Quart. Rptr. 2: 80. 6. 

 Eucerceris laticeps Cresson, 1865. Ent. Soc Phila., Proc. 5: 107. 6, 9. 



Taxonomy: Evans, 1971. Kans. Ent. Soc, Jour. 44: 517-518, figs. 15-21 (larva). 



Biology: Evans, 1971. Kans. Ent. Soc, Jour. 44: 514-517, figs. 11, 13, 14 (nest, prey, egg, 

 cocoon). 



