Ichneumon- Flies 

 of America North of Mexico 



Henry and Marjorie Townes 



Introduction 



This is part 2 of a series of monographs on the ichneumon 

 flies of America north of Mexico, prepared under a project supported 

 by the Dow Chemical Company, the University of Michigan, and 

 the National Science Foundation. The first paper, on the subfamily 

 Metopiinae, was issued March 6, 1959, as U. S. National Museum 

 Bulletin 216, part 1. 



The statements in part 1 about bibliography, material studied, 

 and terminology apply also to this paper. References to original 

 descriptions concerning Nearctic material are all given, and references 

 to original descriptions based on exotic material are given where they 

 seem necessary to explain the nomenclature. Papers on biology and 

 morphology are cited, but those which record only hosts or localities, 

 or which are secondary taxonomic references, are omitted. These 

 can be located in a recent catalog, if they are of interest (Townes, 

 1944, Mem. Amer. Ent. Soc, No. 11, pp. 23-120). Most of the 

 material in the larger North American collections, plus a few smaller 

 lots of specimens, has been studied. The list of collections is the same 

 as for part 1, except that very little of the material in the Corvallis 

 and Edmonton collections was used for this paper. 



As in part 1, the locality and host records we cite are only from 

 specimens seen by ourselves. Unconfirmed records in literature are 

 omitted. Some of these published records are valuable, but a large 

 percentage are based on incorrect or questionable determinations. 

 In most cases, the specimens on which the determinations were based 

 have been studied again, and we hope they are now being recorded 

 correctly. If a locality or host record in literature is not repeated, 

 it is unconfirmed by our work. For names of the hosts, we have had 

 to accept the statements on the pin labels, which in some cases are 



