26 Hymenoptera in America North of Mexico 



Genus SPHACOPHILUS Subgenus CEOCOLUS Smith 



Sphacophilus subg. Ceocoius Smith, 1971. Amer. Ent. See, Trans. 97: 562. 

 Type-species: Schizocenis abdoniinalis Cresson. Orig. desig. 



Known hosts for species of this subgenus are members of the plant family Leguminosae. 

 These sawflies appear to be most common in the prairie regions of central North America. 



abdominalis (Cresson). N. C; S. Dak., 111. w. to Colo., N. Mex. Host: P.wralea. 



Schizocenis abdoininalis Cresson, 1865. Ent. Soc. Phila., Proc. 4: 243. <J. 

 albicosta Smith. Idaho, Wash., Oreg. Host: Psoralea. 



Sphacophilus (Ceocoius) albicosta Smith, 1971. Amer. Ent. Soc, Trans. 97: 563. 9, 3. 

 apios (Ross). N. C, 111., Kans. Host: Desniodiurn, Psoralea. 



Sterictiphora apios Ross, 1933. Ent. Soc. Wash., Proc. 35: 13. 9, d, larva. 



Sterictiphora apios form atresce^is Ross, 1933. Ent. Soc. Wash., Proc. 35: 14. 9, S. 



Biology: Ross, 1933. Ent. Soc. Wash., Proc. 35: 13-19. 

 argutus Smith. Ariz. (Tucson Mts.). 



Sphacophilus {Ceocoius) argidus Smith, 1971. Amer. Ent. Soc, Trans. 97: 566. 9. 

 crenus Smith. W. Tex. 



Sphacophilus (Ceocoius) crenus Smith, 1971. Amer. Ent. Soc, Trans. 97: 567. 9, 6. 

 dissensus Smith. Ariz. (Indian Pine). 



Sphacophilus (Ceocoius) dissensus Smith, 1971. Amer. Ent. Soc, Trans. 97: 568. 9. 

 hamus Smith. S. Ariz. 



Sphacophilus (Ceocoius) hannis Smith, 1971. Amer. Ent. Soc, Trans. 97: 568. 9, 6. 

 memmonius Smith. S. Calif. (Algadones Sand Dune, Imperial Co.). 



Sphacophilus (Ceocoius) n)enimonius Smith, 1971. Amer. Ent. Soc, Trans. 97: 570. 9. 

 nigriceps (Konow). Man., Minn., 111. w. to Alta., Wyo., Colo., N. Mex., Tex. Host: Petalostemum. 



Brachyphafnus nigriceps Konow, 1906. Ztschr. System. Hym. Dipt. 6: 251. 9. 



Schizocenis nortoni Rohwer, 1909. Canad. Ent. 41: 11. S. 



Taxonomy: Smith, 1972. Amer. Ent. Soc, Trans. 98: 175 (larva). 

 oblatus Smith. N. Mex., Ariz. 



Sphacophilus (Ceocoius) oblatus Smith, 1971. Amer. Ent. Soc, Trans. 97: 576. 9. 

 plumiger (Klug). N. C, Ga., Fla. Host: Petalostemum. 



Hylotoma plumiger Klug, 1814. Mag. Gesell. Naturf. Freunde Berlin 6: 306. 9. "New 



York" (!). 

 Cry plus Klugii Leach, 1817. Zool. Misc., v. 3, p. 125. 9,6. 



Taxonomy: Smith, 1973. Ent. Soc. Wash., Proc. 75: 28-29. 

 precarius Smith. Ga., Fla. 



Sphacophilus (Ceocoius) precarius Smith, 1971. Amer. Ent. Soc, Trans. 97: 578. 9. 

 rallus Smith. Ariz. (Santa Catalina Mts.). 



Sphacophilus (Ceocoius) rallus Smith, 1971. Amer. Ent. Soc, Trans. 97: 578. 9. 

 triangularis Smith. Ariz. (Douglas). 



Sphacophilus (Ceocoius) triangularis Smith, 1971. Amer. Ent. Soc, Trans. 97: 580. 9. 



Family CIMBICIDAE 



These are large, robust sawflies, and the larvae are all external leaf feeders. The family is 

 found in most of the world except for the Ethiopian and Australian regions and contains about 

 130 species. 



Taxonomy: Benson, 1938. Roy. Ent. Soc London, Trans. 87: 369-372 (key to world 

 subfamilies). — Townes, 1962. U. S. Natl. Mus., Bui. 216, p. 67 (Clavellariidae). 



