AGRICULTURAL EXPERIMENT STATION. 235 



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records the same facts reported by Cordley, Init adds nothing new 

 and leaves all the errors of previous writers unchallenged. He 

 however, makes the novel and reasonable suggestion, that Trypeta 

 may have acquired the habit of feeding on cultivated apples, 

 "because cultivated apples became more plentiful or thorn apples 

 less numerous." 



The fact that Trypeta will feed upon plums and cherries is quite 

 important as showing the adaptability of this insect to new food. 

 Great care should be exercised before drawing conclusions 

 and it is usually best to not decide a species without obtaining the 

 perfect insect by transforming the larva. We have no reason 

 to doubt the insect was Trypeta pomonella, thougli the species was 

 decided from the larva and pupa. There is a European species 

 T. signata, Meigen, that infests the cherry, barberry and several 

 other fruits, and T. Ludens, Loew (the Morelos Orange Fruit 

 Worm) infests oranges in Mexico. Thelarvfe and puppe of flies, 

 especially of the same genus, are so nearly alike, and it being 

 known that other species of the genus infest fruits, we hope Cook, 

 Cordley and Davis will confirm their observations by rearing the 

 flies from infested plums and cherries. 



In Maine Agricultural Experiment Station Bulletin, No. 2, 

 (Second Series), Prof. Harvey records the following new facts 

 regarding the life history of Trypeta : 



(a) The discovei-y of the eggs ; the number of eggs the female 

 deposits: that the eggs are insericd from time to ti7ne, one in a 

 place, by means of a sharp ovipositor, through the skin of the apple ; 

 that the eggs are deposited in the fruit before it is ripe and in early 

 fruit in early July ; the time required for the eggs to hatch. 



(&) That the larva becomes full grown in from four to six 

 weeks ; that they leave the apple through characteristic openings 

 in tlie skin, and on grassy ground probably hybernate about the 

 grass roots ; that the larvae stored in fruit leave it and go 

 in the pupa state in the bins or barrels ; that the}^ occur in the 

 fruit earlier and during a longer time than before recorded. 



(c) That the flies are on the wing longer than before recorded ; 

 that the later races of flies affect the later fruit. 



Additional new facts will be found recorded in this Report and 

 some of those recorded in the above Bulletin modified or extended. 



The Abstract of Maine Agricultural Experiment Station Bulletin 

 No. 2 (Second Series), which occurs in Station Record, Vol. 1, 

 No. 2, page 73, is incorrect in the following particulars : 



