Superfamily CEPHOIDEA 135 



Jayius flaviventris Fitch, 1862. N. Y. State Agr. Soc, Trans. 21: 852. 



Biology: Slingerland, 1897. Cornell Univ., Agr. Expt. Sta., Bui. 126: 41-53. — Middleton, 1917. 

 Ent. Soc. Wash., Proc. 19: 176. -Britton, 1921. Conn. (State) Agr. Expt. Sta., Bui. 226: 

 201-204. 

 rufiventris (Cresson). Oreg., Calif. 



Cephus rufiventris Cresson, 1880. Amer. Ent. Soc, Trans. 8: 33. 9. 



Tribe CEPHINI 



Genus CEPHUS Latreille 



Astatus Jurine, 1801. Intell. Blatt. Litt.-Ztg. Erlangen, v. 1, p. 163. Suppressed by 

 Internatl. Comm. Zool. Nomencl., Opinion 135, 1936. 



Type-species: Sirex pygmaeus Linnaeus. Monotypic. 

 Cephus Latreille, 1802. Hist. Nat. Crust. Ins., v. 3, p. 303. 



Type-species: Sirex pygmaeus Linnaeus. Desig. by Latreille, 1810. 

 Perinistiius Ghigi, 1904. Ann. Mus. Napoli 1: 26. 



Type-species: Cephus politissimus Costa. Monotypic. 

 Peronistilomorphus Pic, 1916. Echange 33: 381. 



Type-species: Pero7iistilo7norphus berytensis Pic. Monotypic. 

 Cephus subg. Fossulocephus Pic, 1917. Echange 34: 2. 



Type-species: Cephus {Fossulocephus) cintriniventris Pic. Monotypic. 

 Pseudocephus Dovnar-Zapolskii, 1931. Mus. Zool. Acad. Sci. Leningrad, Ann. 32: 47. 



Type-species: Cephus pulcher Tischbein. Orig. desig. 



Of the 25 to 30 world species only 2 are found in North America and one of these is an in- 

 troduction. Larvae bore in the stems of grasses and may be serious pests in cultivated grain 

 crops. 



cinctus Norton. Man., Mich., Ohio, Mo., Ark. w. to Alta., Wash., Oreg., Calif. Ecology: Most 



serious crop damage is in the wheat growing areas of the north central states and south 

 central provinces. The preferred host is wheat, but to a lesser extent spring rye, barley, 

 and timothy; also native grasses. Host: Triticum aestiviim, Secale cereale, Hordeum 

 vulgare, Phleum pratense, Agropyron, Beckmannia, Bromus, Calarnagrostis, 

 Calamovilfa, Deschampsia, Elymus, Festuca, Stipa. One or more species in the 

 preceding genera may be suitable hosts. Wheat stem sawfly. 



Cephus cinctus Norton, 1872. Amer. Ent. Soc, Trans. 4: 86. 6. 



Cephus occidentalis Riley and Marlatt, 1891. U. S. Dept. Agr., Insect Life 4: 177. 9, S. 



Cephus graenicheri Ashmead, 1898. Canad. Ent. 30: 182. 9, cJ. 



Biology: Ainslie, 1920. U. S. Dept. Agr., Bui. 841, 27 pp. — Ainslie, 1929. U. S. Dept. Agr., 

 Tech. Bui. 157, 23 pp. -Wallace and McNeal, 1966. U. S. Dept. Agr., Tech. Bui. 1350, 50 pp. 

 (history; damage; distribution; hosts; biology; control; breeding for sawfly resistance; 

 extensive bibliography to work prior to 1966, much to large to repeat here). — McWilliams, 

 Pesho, and Hodgin, 1970. Jour. Econ. Ent. 63: 993-994 (plastic light-filters for field studies 

 of behavior). -Villacorta, Bell, and Callenbach, 1971. Jour. Econ. Ent. 64: 749-751 

 (influence of high temperature and light on post-diapause development). 



Morphology: Holmes, 1970. Canad. Ent. 102: 713-715 (sexing larvae). 

 pygmaeus (Linnaeus). Ont., Mass., Conn., N. Y., N. J., Pa., Del, Md., N. C; Europe. Ecology: 



Found mostly on cultivated grasses, primarily wheat, but to a lesser extent barley, rye, 



and the uncultivated cheat grass. Introduced, first found in Ont. and N. Y. in the 1880's. 



Host: Triticum aestivum, Secale cereale, Hordeum vulgare, Bromus secalinus. 



European wheat stem sawfly. 

 Sirex pygmaeus Linnaeus, 1766. Syst. Nat., Ed. 12, p. 929. 

 Tenthredo longicomis Geoffroy, 1785. nt Fourcroy, Ent. Paris, p. 378. 

 Tenthredo polygona Gmelin, 1790. Syst. Nat., v. 5, p. 2670. 

 Banchus spinipes Panzer, 1801. Faunae Ins. German., heft 73, pi. 17. 

 Astatus floralis Klug, 1803. Monog. Siricum German., p. 53. 

 Banchus viridator Fabricius, 1804. Systema Piezatorum, p. 127. 

 Cephus subcylindricus Gravenhorst, 1807. Vergl. Uebers. Zool. Syst., p. 274. 



