

i 



UNITED STATES DEPARTMENT OF AGRICULTURE 



MISCELLANEOUS PUBLICATION No. 174 



Washington, D.C. V December 1933 



THE SERPHOID 



AND CHALCIDOID PARASITES 



OF THE HESSIAN FLY 



By 



A. B. GAHAN 



Senior Entomologist 



Division of Identification and Classification of Insects 



Bureau of Entomology 



S. f. S. rlf 



UQRA. 



FEB - 1934 



IJ 



For sale by the Superintendent of Documents, Washington ,D. C. Price 10 cents 



