360 GEOLOGICAL SURVEY OF NEW JERSEY. 



ORDER DIPTERA. 



Family CECIDOMYID^E. 



OBCIDOMYIA, Meigen. 

 C. anthophila, O. S. 

 C. cornuta, Walsh. 

 C. culmicola, Morris. 

 C. destructor, Say. 



The Hessian fly. Not destructive in New Jersey. 

 C. grossulariae, Fitch. 

 C. ornata, Say. 

 C. salicis-brassicoides, Walsh. 



I have seen the galls of this species not rarely. 



C. vaccinii, J. B. Smith. 



Common on Cranberry ( Vaccinium ) and Loose Strife (Lysi- 

 machia). 



DIPLOSIS, Lw. 



D. caliptera, Fitch. 



D. caryse, 0. S. 

 D. graminis, Fitch. 

 D. inimica, Fitch. 

 D. robiniae, Hald. 

 D. tritici, Kirby. 



Was reported as doing some damage in New Jersey during 

 the season of 1889. 



ASPHONDYLIA, Lw. 

 A. monacha, O. S. 

 A. recondita, 0. S. 

 A. rudebeckiae-conspicua, 0. S. 



