No. 22.] HYMENOPTERA OF CONNECTICUT. 261 



*A. (Trioxys) exareolatus Viereck (new species). 



Type locality: New Haven, 17 June, 1905. Reared from the 

 rose aphis (B. H. W.). 

 °A. (T.) rhagii Ashmead. 



Said to be parasitic on the beetle Rhagium lineatum. 



A. (T.) aceris Haliday. 



Host : Chaitophorus aceris. 



A. (Lysiphlebus) testaceipes (Cresson). 



Parasitic on Aphis maidis, A. gossypii, A. setarioc, A. brassicoey 

 A. maidiradicis, A. medicaginis, A. heraclii, Toxoptera 

 graminum, Siphonophora cucurbitce, Mysus rihis, M. cerasi, 

 Siphocoryne avence, Macrosiphum rosce, M. granaria, and 

 Rhopalosiphum dianthi 



New Haven, 4 July, 1905 (H. L. V.). 



A. (Diaeretus) rapae Curtis. 



Parasitic on Aphis brassicce. New Haven, 26 June, 1905 

 (H.L.V.). 



°A. (D.) salicaphis (Fitch). 



Parasitic on Chaitophorus populicola. 



A. (Aphidius) nigripes Ashmead. 



Parasitic on Macrosiphum granaria. 



West Haven, 27 June, 1905 (H. L. V.). 

 °A. (A.) polygonaphis (Fitch). Knotweed Aphidius. 



Parasitic on an aphid on Polygonum, Macrosiphum rudbeckice 

 and Siphonophora liriodendri. 



A. (A.) rosae Haliday. 



Parasitic on the rose aphis {Macrosiphum roses). 



West Haven, 27 June, 1905 ; Putnam, 12 July, 1905 ; Cheshire, 

 8 July, 1904 (H. L. V.) ; New Haven, 17 June, 1905 (B. H. W.). 



°A. (A.) phorodontis Ashmead. 



Parasitic on Phorodon mahaleb and Rhopalosiphum dianthi. 



A. (A.) avenaphis (Fitch). Aphidius granariaphis Cook. 



Parasitic on Macrosiphum cerealis and Siphocoryne avence. 

 West Haven, 27 June, 1905 (H. L. V.). 



°A. (A.) ribis Haliday. 



Parasitic on Myzus ribis. 



