1176 Hymenoptera in America North of Mexico 



Taxonomy: Jackson, 1966. Ent. Soc. Amer., Ann. 59: 734-736. —Jackson and Masner, 1966. 

 Canad. Ent. 98: 1214-1219. 

 brunneipes (Ashmead). Throughout the U. S. and southeastern Canada; Mexico, Costa Rica, 

 and the Caribbean. Host: Apparently various cecidomyiid gall-makers. 

 Trichacis brunneipes Ashmead, 1887. Canad. Ent. 19: 131. 9 . 

 Trichasis (!) rubicola Ashmead, 1893. U. S. Natl. Mus., Bui. 45: 295, 296. 9,6. 

 Tricltattiii (!) arizoneuHis Ashmead, 1893. U. S. Natl. Mus., Bui. 45: 295, 296. 9,6. Preocc. 



by Iso)lio)iibHs arizoneuHis Ashmead, 1893, when the latter was placed in Trichacis. 

 Metanopedian .'iicariun Brues, 1910. Amer. Mus. Nat. Hist., Bui. 28: 79. 9. 



Genus TRICHACIS Foerster 



Trichacis Foerster, 1856. Hym. Stud., v. 2, pp. 108, 115. 



Type-species: Plafyga.^ter pinia Walker. Desig. by Ashmead, 1893. 

 Trichasis Thomson, 1859. Ofvers. Kongl. Vetensk.-Akad.. Forh. 16: 70, 78. Emend. 



Taxonomy: Fouts, 1924. U. S. Natl. Mus., Proc. 63 (15): 13-18. 



Biology: Marchal, 1906. Arch, de Zool. Expt. et Gen. 34: 548-557 (Development of the 



European T. ronulits (Walker) as a parasite of the Hessian fly, Maijetiola destructor 



(Say)). 

 arizonensis (Ashmead). Ariz. (Ft. Huachuca). 



Isorhonibu.^ arizouen.'iis Ashmead, 1893. U. S. Natl. Mus., Bui. 45: 277. 9. 

 cornicola (Ashmead). Mo. (Kirkwood). Host: Cecidomyiid gall-maker on Conius paniculata. 



Siptopeas cornicola Ashmead, 1893. U. S. Natl. Mus., Bui. 45: 286, 288. 9,6. 

 cornuta Fouts. Tex. (Brownwood). 



Trichacis cornuta Fouts, 1925. Ent. Soc. Wash., Proc. 27: 93. 9. 

 rufipes Ashmead. D. C, Va., Fla., Mo. 



Trichasis (!) rufipes Ashmead, 1893. U. S. Natl. Mus., Bui. 45: 295. 9,6. 

 texana Fouts. Tex. (Brownwood). 



Trichacis texana Fouts, 1925. Ent. Soc. Wash., Proc. 27: 94. 9. 

 virginiensis Ashmead. Va. (Arlington). 



Trichasis (!) rirginiensis Ashmead, 1893. U. S. Natl. Mus., Bui. 45: 295, 297. 9. 



Genus ISOCYBUS Foerster 



hocijbus Foerster, 1856. Hym. Stud., v. 2, pp. 108, 1 14. 



Type-species: Platygaster grandis Nees. Desig. by Ashmead, 1898. 



Revision: Kieffer, 1926. Das Tierreich, Lief. 48, pp. 718-732. 



Taxonomy: Ashmead, 1893. U. S. Natl. Mus., Bui. 45: 327-330. -Fouts, 1924. U. S. Natl. Mus., 

 Proc. 63 (15): 10-12. 

 auripes (Provancher). Que. (Cap Rouge). 



Trichacis auripes Provancher, 1888. Addit. Corr. Faune Ent. Canada Hym., p. 403. "9" = 



6. 



Taxonomy: Masner, 1969. Nat. Canad. 96: 783 (Lectotype selected). 

 canadensis (Provancher). Que., Ont., Mich., Iowa, Tex., Colo. The distribution and synonymy 

 shown here are from the literature and seem open to some doubt. 

 Platygaster Canadoisi.'i Provancher, 1887. Addit. Corr. Faune Ent. Canada Hym., p. 181. 



6. 

 Monocrita Canadensis Ashmead, 1887. Canad. Ent. 19: 126. "9" = 6. 

 Isocgbus nigriclai'us Ashmead, 1893. U. S. Natl. Mus., Bui. 45: 328. 9. 



Ta.xonomy: Ashmead, 1893. U. S. Natl. Mus., Bui. 45: 329. -Fouts, 1924. U. S. Natl. Mus., 

 Proc. 63 (15): 11-12. —Masner, 1969. Nat. Canad. 96: 780. 



Genus PLATYGASTER Latreille 



Platygaster Latreille, 1809. Gen. Crust. Ins., v. 4, p. 31. 



Type-species: Scelio ruficornis Latreille. Monotypic. 



