266 MAINE AGRICULTURAL EXPERIMENT STATION. I915. 



remain in the trays after the berries have been poured out* 

 The writer has never seen any attempt to kill the maggots at 

 the time of winnowing but if this were done it should help 

 not a little in reducing the numbers of this pest. The older 

 larvae doubtless pupate in situ and because of the many berries 

 necessarily scattered about in the process of winnowing proba- 

 bly many of the smaller larvae are able to work their way to 

 a new berry and complete their growth. 



As the maggots usually are not troublesome until the end of 

 the season when the berries are scarce, and as the parasite 

 Biosteres seems to be doing excellent work fortunately none of 

 the more elaborate control measures are necessary for it would 

 be impracticable to apply them on such a large scale on wild land 

 so far from any centre of supply; and the common practice of 

 burning together with the destruction of such maggots aS 

 can be caught and killed "conveniently after winnowing will 

 doubtless serve to hold Rhagoletis poinondla in check so far as 

 Maine blueberries are concerned. 



Bibliography. 



1Q12. lUingworth, James Franklin. A study of the biolog>' of the apple 

 maggot {Rhagoletis pomonella) together with an investigation 

 of methods of control. Cornell Univ. Agr. Exp. Sta. Bui. 324, 

 pp. 126-188, figs. 16-44. 



1914. O'Kane, W. C. The apple-maggot. N. H. Agr. Exp. Sta. Bui. 

 171, pp. 1-120, pi. 1-8. 



1914. Woods, William C. A note on Rhagoletis pomonella in blue- 

 berries. Journal of economic entomology, v. 7 ■■398-399- 



These are the most recent publications dealing with the apple 

 maggot and both contain a full bibliography of earlier articles. 



A Blueberry Cecid Lasioptera frnctiiaria, Felt n. sp. 



DISTRIBUTION AND HOST-PLANTS. 



Rhugoletis is not the only dipterous insect which has adopted 

 the blueberry as its habitation. A tiny Cecidomyid, Lasioptera 

 fructuaria Felt was found in the fruit in considerable numbers. 

 It is not of economic importance, however, because it infests 

 only decayed or decaying berries. It seems to be generally dis- 



