A llEVISION OF THE PARASITIC WASPS OF THE SUB- 

 FAMILY BRACONINAE OCCURRING IN AMERICA NORTH 

 OF MEXICO 



By C. F. W. MuEsEBECK 



Of the Bureau of Entomology, United States Department of Agriculture 



INTRODUCTION 



It was shown ])y Viereck^ that Cremnops Foerster (1862), a genus 

 of Agathidinae, is isogenotypic with Bracon Fabricius (1804), and 

 must therefore be suppressed as a synonym. Since, under the rules 

 of nomenclature, one of the subfamily names must be based on the 

 same generic name as that on which the name of the family is founded, 

 it became necessary to replace Agathidinae of Authors with the sub- 

 family name Braconinae, This change has been published by Gahan.^ 



The following pages present the results of a detailed study of the 

 Braconinae of America north of Mexico, with the purpose of f acihtat- 

 ing the identification of the species occurring in this region. The 

 Nearctic species of the genus Bracon Fabricius (Cremnops Foerster) 

 have been comparatively recently studied and classified by Morrison,^ 

 and a treatment of Bracon therefore will be omitted from this paper, 

 except for the description of a single new species. There are many 

 world genera that have been assigned to this subfamily which are 

 not known to occur in our fauna. These have been omitted from 

 even the generic key, because it is impossible to determine what most 

 of them are without access to the genotypes, and their inclusion would 

 almost certainly increase the difhculty of recognizing our known gen- 

 era in the key. 



The collection of Braconinae in the United States National Mu- 

 seum has served as a basis for this revision. In addition, I have had 

 the opportunity of studying the types in the Philadelphia Academy 

 of Science, those in the University of Kansas, and those at the State 

 agricultural experiment station in New Haven, Connecticut. I have 

 also seen certain material from the collections of the University of 

 Illinois and the Boston Society of Natural History. 



J Bull. 83, U. S. Nat. Mus., 1914, pp. 23 and 37. 

 'Proc. U. S. Nat. Mus., vol. 53, 1917, p. 197. 

 s Idem, vol. 52, 1917, pp. 305-313. 



No. 2642.-PROCEEDINGS U. S. NATIONAL MUSEUM, VOL. 69. ART. 16. 



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