856 Hymenoptera in America North of Mexico 



obtusiventris Gahan. Mass., Ont, N. Y., Va., Ohio, Ind., Mich., Miss., La., Kans., Okla., Colo., N. 

 Mex.; Mexico. Ecology: This species seems ordinarily to be parthenogenetic. Host: 

 Eitrosta soli(lagi)ii.s (Fitch), Neotephritis finalis (Loew). 

 Eurytoma obtitsivetitris Gahan, 1934. Ent. News 45: 117. 9. 



Biology: Hughes, 1934. Ent. News 45: 119-122. — Uhler, 1951. Cornell Univ. Agr. Expt. Sta., 

 Mem. 300: 40. -Miller, 1959. Tenn. Acad. Sci., Jour. 34: 249. 



orchidearum (Westwood). Que., Ont., Mass., N. Y., N. J., D. C, Fla., 111., La., Tex., Calif.; 



Cosmopolitan in Tropical and Subtropical regions. Ecology: North American records 

 from area north of Southern Florida and Southern California are from greenhouses and 

 conservatories. Host: Cattleya spp. Also other orchids having pseudobulbs. 



hoaoma Orchidearum Westwood, 1869. Card. Chron. p. 1230. 9, S. 



Eurytoma phoenix Girault, 1917. Descr. Hym. Chalcidoid. Variorum cum Observ. V, p. 11. 

 9. 



Taxonomy: Gahan, 1922. Ent. Soc. Wash., Proc. 24: 41 (generic placement). — Bugbee, 1956. 

 Ent. Soc. Amer., Ann. 49: 504 (syn.). 



Biology: Felt, 1916. N. Y. State Mus., Bui. 180: 336. -Moore, 1916. N. J. Agr. Expt. Sta., Bui. 

 308: 3-12. -Timberlake, 1924. Hawaii. Ent. Soc, Proc. 5: 420. — Aczel, 1936. Roy. 

 Hungarian Hort. Col., Bui. 2: 41-43. — Brandao, 1942. Sitios e Fazendas 7: 73. — Figueiredo, 

 1942. Biologico 8: 136-138. —Gomes, 1942. Rev. Agron., Porte Alegre 6: 568-569. — Swezey, 

 1945. Hawaii. Ent. Soc, Proc. 12: 359-360. -Brandao, 1945. Brasil Min. da Agr., Bol. 34: 

 67-68. —Lepage and Figueiredo, 1947. Circolo Paulista de Orquidofilos, Bol., p. 12. —Bess, 

 1953. Hawaii. Farm Sci. 1: 3-6 (immature stages). —Look, 1954. Hawaii. Ent. Soc, Proc 15: 

 264, 271. 



pachyneuron Girault. P. E. I., Que., s. to N. C, w. to B. C, Wash., Oreg., Calif. Ecology: This 

 species begins its development as a parasite and completes its larval growth by feeding 

 on plant tissues in grass stems. Host: Harmolita spp., Mayetiola destructor (Say); 

 Elymus spp., Triticum spp. 



Euryto))ia pacliyneuroii Girault, 1916. Canad. Ent. 48: 337. 9. 



Euryto))ia phoe'bns Girault, 1920. U. S. Natl. Mus., Proc. 58: 204. 9. 



Eurytoma pater Girault, 1920. U. S. Natl. Mus., Proc. 58: 207. 9. 



Taxonomy: Bugbee, 1956. Ent. Soc. Amer., Ann. 49: 503 (syn.). 



Biology: Phillips, 1917. Jour. Econ. Ent. 10: 145 (pater). —Gahan, 1922. Ent. Soc. Wash., 

 Proc. 24; 37 (pater). -Gahan, 1934 (1933). U. S. Dept. Agr., Misc Pub. 174: 33-36 

 (phoebus). —Jones, 1932. Jour. Econ. Ent. 25: 412 (pachyueuron). —Hill and Pinckney, 

 1940. U. S. Dept. Agr., Tech. Bui. 715: 8 (phoebu.^, immature stages). — Chamberlin, 1941. 

 U. S. Dept. Agr., Tech. Bui. 784: 40 (phoebus, larva). — Brandhorst, 1943. Kans. Acad. Sci., 

 Trans. 46: 174 (pater). -Cannon, 1963. Canad. Ent. 95: 34 (phoebus). 

 parva Phillips. N. Y., D. C, Va., Pa., Ohio, Ind., Kans., Sask., Alta. Host: Cephus ductus Nort., 

 Harmolita tritici (Fitch). 

 Eurytoma bolteri var. parra Philhps, 1918. U. S. Dept. Agr., Farmers' Bui. 1006: 11, 14. 9. 



Taxonomy: Phillips, 1927. Jour. Agr. Res. 34: 743 (change from var. to sp.). 



Biology: Phillips, 1918. U. S. Dept. Agr., Farmers' Bui. 1006: 11 (life hist.). —Phillips, 1927. 

 Jour. Agr. Res. 34: 743-758 (host relationships). —Phillips and Poos, 1940. U. S. Dept. Agr., 

 Farmers' Bui. 1006 (rev.): 10-11 (life hist.). —Chamberlin, 1941. U. S. Dept. Agr., Tech. Bui. 

 784: 32-35 (parasites). 

 phloeotribi Ashmead. Que., N. Y., N. J., D. C, Va., W. Va., N. C, Idaho, Oreg., Calif. Host: 



PhlocosiuHs sequoiae Hopk., Phloeotribus dentifrous (Blackm.), P. frontalis (Oliv.), 



Pityophthorus liquida))ibarus Blackm., Pseudopityophthorus mi)iutissimus (Zimm.), P. 



pruiiiosus (Eich.), Scolytus abietis Blackm., S. luuticus Say, Stephauoderes dissiuiilis 



(Zimm.). 

 Eurytoma phloeotribi Ashmead, 1894. Amer. Ent. Soc, Trans. 21: 326. 9. 



Taxonomy: Bugbee, 1970. Ent. Soc Amer., Ann. 63: 437. 



Biology: Beal and Massey, 1945. Duke Univ. School Forestry, Bui. 10: 71, 111, 122. 



