1604 Hymenoptera in America North of Mexico 



Pemphredon bipartitor (!) Dalla Torre, 1897. Cat. Hym., v. 8, p. 356. 

 Pemphredon biparitor (!) Rau, 1928. Acad. Sci. St. Louis, Trans. 25: 369. 

 Pemphredon (Cereonus (.')) Iiarbecki Rohwer, 1910. Ent. News 21: 170. 9. 



Biology: Rau, 1928. Acad. Sci. St. Louis, Trans. 25: 369-373, figs. 46, 47 (nest, prey, life cycle). 

 —Rau, 1934. Canad. Ent. 66: 259 (nest, prey, life history). — Krombein, 1960. Ent. News 

 71: 34 (nest, prey). 

 grinnelli (Rohwer). B. C, Calif., Ariz., Utah, Colo. Ecology: Nests in borings in Sambucus 



stems. Parasite: Anthrax ii-roratus Say; Omalus trilobatns Boh. and Camp., 0. cressoni 



(Aar.); Eurytoma stig7na Ashm.; Habrocytus analis (Ashm.). 

 Ceratophortts gennelli (!) Rohwer, 1910. Ent. Soc. Wash., Proc. 12: 104. 9. This name was 



intended as a patronymic for F. Grinnelli, Jr., who collected the holotype. 

 Ceratophonis grinyielli utahensis Rohwer, 1911. U. S. Natl. Mus., Proc. 40: 562. 9. 

 Cemonus gijfardi Rohwer, 1917. U. S. Natl. Mus., Proc. 53: 246. 9. 



Taxonomy: Evans, 1958. Amer. Ent. Soc, Trans. 84: 129, fig. 57 (larva). 



Biology: Parker and Bohart, 1966. Pan-Pacific Ent. 42: 94 (nest, parasites). 

 inornatus Say. Transcont. in Transit, and U. Austr. Zones; Europe. Ecology: Nests in cavities 

 in twigs, in rotten wood, and in exposed tree roots. Parasite: Perithons mediator 

 pleuralis Cr. Prey: Macrosiphum sp. 

 Pemphredon inornatus Say, 1824. In Keating, Narr. Long's 2nd Exped., v. 2, p. 339. 

 Cemonus Shuckardi Morawitz, 1864. Acad. Imp. des Sci. St. Petersburg, Bui. 7: 460. 9,6. 

 Cemonus dentatus Puton, 1871. Soc. Ent. de France, Ann. (5) 1: 94. 9. 

 Pemphredon tenax Fox, 1892. Amer. Ent. Soc, Trans. 19: 313. 9, d. 



Taxonomy: Evans, 1958. Amer. Ent. Soc, Trans. 84: 128-129, figs. 49-55 (larva). 



Biology: Rau and Rau, 1918. Wasp Studies Afield, p. 108 (nest, prey, life cycle). —Rau, 1928. 



Acad. Sci. St. Louis, Trans. 25: 373-375 (nest, prey). —Rau, 1946. Brooklyn Ent. Soc, Bui. 



41: 10. —Evans, 1958. Amer. Ent. Soc, Trans. 84: 129 (nest). 

 lethifer (Shuckard). Ont. south to Fla., Pa. west to 111., Colo., Utah, Wash., Calif.; Europe. 



Ecology: Nests in North America in soft pith of roses, berries, sumac, hibiscus. Possibly 

 adventive in North America. Parasite: Perithous divinator (Rossi); Omalus auratus (L.), 

 0. purpiuratus (Prov.). Prey: Aphis gossypii Glov., A. sp. nymphs, Chaitophorus 

 populicola patchae H. R. L. nymphs and adults. 



Cemonus lethifer Shuckard, 1837. Essay on Indig. Fossor. Hym., p. 201. 9,6. 



Ceynonus strigatus Chevrier, 1870. Schweiz. Ent. Gesell., Mitt. 3: 269. 9,6. 



Cemonus Fabricii Mueller, 1911. Ent. Rundschau 28: 107. N. name for unicolor Auctt. 



Pemphredon (Diphlebiis) littoralis Wagner, 1918. Deut. Ent. Ztschr., p. 143. 9,6. 



Pemphredon (Diphlebus) fuscatns Wagner, 1918. Deut. Ent. Ztschr., p. 143. 6. 



Pemphredon {Diphlebus) neglectus Wagner, 1918. Deut. Ent. Ztschr., p. 143. 6. 



Pemphredon {Diphlebus) minutus Wagner, 1918. Deut. Ent. Ztschr., p. 143. 6. 



Pemphredon (Dineurus) lethifer form confusa Wagner, 1932 (1931). Deut. Ent. Ztschr., p. 

 231. 9. 



Pemphredon (Dineurus) brevipetiolatus Wagner, 1932 (1931). Deut. Ent. Ztschr., p. 232, 

 fig. 14. 6. 



Taxonomy: Krombein. 1959. Brooklyn Ent. Soc, Bui. 54: 95-96 (occurrence of lethifer in N. 

 Amer. and differentiation from N. Amer. spp.). —Evans, 1964. Amer. Ent. Soc, Trans. 90: 

 246-248, figs. 23-25 (larva). 



Biology: Rau, 1948. Ent. Soc. Amer., Ann. 41: 326 (nest, prey; misdet. as inortiatus). 

 —Krombein, 1959. Brooklyn Ent. Soc, Bui. 54: 96 (parasite). —Krombein, 1960. Ent. News 

 71: 34-35 (nest, prey, cocoon, life cycle, parasite). —Krombein, 1964. Biol. Soc. Wash., Proc. 

 77: 99-100, fig. 17 (nest, prey, life cycle). -Thomas, 1964. Mich. Acad. Sci., Arts and 

 Letters, Papers 49: 199-201 (nest, parasite, life history). —Parker and Bohart, 1966. 

 Pan-Pacific Ent. 42: 94 (nest). 



Genus PASSALOECUS Shuckard 



Xyloeciis Shuckard, 1837. Essay Indig. Fossor. Hym., Conspect. Gen., No. 25. Preocc. 



