22 N. H. AGR. EXPERIMENT STATION. [Bulletin 171 



is found in the apple orchards of the piedmont section of the state. 

 The annual damage is estimated at not to exceed 2 per cent. 

 The maggot is considered a species of little consequence. 



There are no authentic observations of the presence of the 

 maggot in Georgia or in Florida. 



In Michigan Professor Pettit writes that they are troubled 

 somewhat by the apple maggot, but not excessively. What 

 appears to be the same species occurs commonly in crabs and 

 haws. 



Professor Sanders states that in Wisconsin the species has 

 never been of any considerable importance. Its work has not 

 been generally noted, though more infestation was found in 1913 

 than in the previous three years. 



In Minnesota the maggot is not a pest, according to notes 

 furnished by Professor Ruggles. No damage has been recorded 

 from apples, although the species has been bred from Cratcegtis 

 in the state. 



A letter from Professor Waldron states that in North Dakota 

 they have not found the maggot. Apple growing is so new an 

 industry in the state that very few of the pests have as yet put in 

 an appearance. 



For South Dakota Professor Severin states that the insect has 

 not been recorded in the state. 



For Iowa Professor Webster reports no recent damage, al- 

 though a number of years ago it was found in injurious numbers 

 in the state by Professor Osborn. It is not now common. 



Professor Swenk writes that there is no authentic instance of 

 the presence of the species in Nebraska, nor has attack on Ne- 

 braska grown apples been observed. 



In Kansas the species has been observed occasionally in 

 orchards in the eastern part of the state, according to notes by 

 Professor Dean, but it has not proved a serious pest. It does not 

 seem to be any more abundant than it was several years ago. 



Professor Gillette writes that he has never seen the work of 

 the insect in Colorado. About twenty years ago a fly was taken 

 by him in general collecting at Colorado Springs that was deter- 

 mined as this species. It was probable that the maggot or pupa 

 had been shipped to that locality in a barrel of apples from the 

 East. 



