1913 



ENTOMOLOGICAL SOCIETY, 



101 



a row along the east of an old cherry orchard I was surprised to see many flies 

 that even to the naked eye appeared different from cingulata and resembled much 

 more closely E. pomonella, the Apple Maggot. I felt sure, however, that the 

 latter would not yet have emerged. On closer examination I saw that these flies 

 had no whitish crossbands on their abdomens, and that the dark crossbands on 

 the wings were not arranged in the same manner as those of either cingulata or 

 pomonella. Accordingly I had several sent to Prof. Aldrich who stated that they 



Fig. 35. — Black-bodied Cherry Fruit 

 Fly (Rhagoletis fausta), much 

 enlarged. This fly is a little 

 larger than the following species. 



were Ehagoletis fausta — the species which he had described on Page 70, Vol. XLI 

 of the Canadian EntomologiM as intrudens but later discovered to be identical 

 with fausta, the name that Osten Sacken had given it in 1877. Before I had 

 any reply from Prof. Aldrich I received a letter from Mr. Illingworth of Cornell 

 University who said that one of our students who happened to be with me the 

 day I found this species had called on him and shown him specimens of the' 

 insects which he had taken with him to Cornell. In liis letter Mr. Illingworth 

 kindly gave me the name of the insect and some information on the degree of 

 prevalence in his state. 



Fig. 36.— Cherry Fruit Fly (Ehag- 

 oletis cingulata), much enlarged. 

 This fly is a little smaller than 

 the House Fly. 



Fig. 37.— Adult of the Apple Mag- 

 got or Railroad Worm (Rhago- 

 letis pomonella), much enlarged. 

 This species is about the same 

 size as the one pictured in 

 Fig. 35. 



During the weeks that followed I examined as many cherry orchards as I 

 could to see how widespread the species was and how it compared in numbers 

 and destructiveness with cingulata. At St. Catharines cherry orchards infested 

 with this species were practically free from cingulata and vice versa. It seemed 

 to be nearly as widespread in that district as cingulata and was probably just 

 about as destructive. At Grimsby both species were found in the same orchard 

 and apparently in about the same proportions. In many other orchards there 

 were cherries containing maggots of fruit flies, but as I did not see the adults 

 I could not tell which species they belonged to. Mr. Illingworth states that 



