April, "10] OKANE : THE APPLE MAGGOT 16» 



Mr. Felt: I do not know what the conditions are in New Hamp- 

 shire. Some injurj^ has resulted in New York State, but upon sub- 

 mitting specimens to Mr. Van Duzee they were determined as 

 Typhlocyba rosce Linn. 



President Brittok: The next paper on the programme will be 

 read by Mr. A. G. Hammar. Washington, D. C, entitled "Methods 

 Used in Rearing the Grape Root-Worm {Fidia viticida Walsh) and 

 the Codling Moth." 



METHODS IN REARING THE GRAPE ROOT-WORM, 

 FIDIA VITICIDA WALSH, AND THE CODLING MOTH, 

 CARPOCAPSA POMONELLA L. 



By A. G. Hammar, Bureau of Entomology, North East, Pa., Field Station 



This paper was accompanied by lantern slides showing breeding 

 cages and other devices used in the rearing of the insects, with a sum- 

 mary account of the results obtained with the Grape Root-worm. 

 [Withdrawn for publication elsewhere.] 



President Britton : The next paper on the programme will be 

 presented by Mr. W. C. O'Kane, Durham, N. H., entitled "Work on 

 the Apple Maggot." 



WORK ON THE APPLE MAGGOT 



By W. C. O'Kane. Durham, X. H. 



In New Hampshire today the most serious orchard pest is the 

 Apple Maggot, Rhagoletis pomonella, Walsh. 

 Four factors contribute to this: 



1. The apple is a principal crop in New Hampshire. 



2. The infestation is now general throughout the lower two thirds 

 of the state, including the entire apple growing section. 



3. While formerly found in early or sweet varieties, usually grown 

 for home use, the insect is now spreading rapidly to the winter fruit, 

 which is the commercial mainstay of the orchardist. 



4. No positive, effective and practical remedy is known; at least, 

 none that we may recommend with certainty to the grower who 

 happens to have a careless neighbor, that does not keep his fallen 

 fruit picked up, or to the man whose trees may lie partly along a 



