THE ALFALFA LOOPER IN PACIFIC NORTHWEST. EUG 
Two specimens of a dipterous fly, Phorocera saundersii Will. (fig. 
51), were reared from a larva of the alfalfa looper on May 18, 1910. 

Fic. 50.—Plagia americana, a dipterous parasite of the alfalfa looper. Greatly enlarged. 
(Original. ) 
Mr. Koebele* 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 

Fic. 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 obscuripes 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. 

