THE ALFALFA LOOPER IN PACIFIC NORTHWEST, 



117 



Two specimens of a dipterous fly, Phovocera saundersii Will. (fig. 

 51), were reared from a larva of the alfalfa looper on May 18, 1910. 



Fig. 50. — Plagia americana. a dipterous parasite of the alfalfa looper. Greatly enlarged. 



(Original.) 



Mr. Koebele x records having reared 14 parasitic flies from a single 

 larva of this moth at Los Angeles; but as the material is not now 

 available, determination is impossible. These were probably not 

 flies but"Hymenoptera and very likely Apanteles hyslopi Vier. On 



Fig. 51. 



-Phorocera saundersii, a dipterous parasite of the alfalfa looper. Greatly 

 enlarged. (Original.) 



the same note he also records rearing two flies from a larva of this 

 moth at Alameda, Cal. 



On July 8, 1909, two ants (Formica rufa ooscuripes Forel) were 

 found at Pullman, Wash., dragging a young larva of this insect that 

 was alive and struggling. 



1 Bureau of Entomology Notes, No. 95 K. 



