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MAINE 



AGRICULTURAL EXPERIMENT STATION 



ORONO, MAINE. 



CHAS. D. WOODS, Director. 



APPLE TREE INSECTS OF MAINE.* 

 Edith M. Patch, 



O. A. JOHANNSEN. 



Before it is possible to combat an insect pest intelligently we 

 must learn something of its habits and of its vulnerable points. 

 When these are known proper remedial measures may then be 

 taken for its extermination or repression. To meet the needs 

 of those who wish to learn something of the commoner injuri- 

 ous insects which affect the apple tree and its fruit this circular 

 has been prepared. It is a compilation largely from the Ento- 

 mological bulletins and circulars of the Maine Agricultural 

 Experiment Station. We desire to acknowledge the use also of 

 publications of the United States Department of Agriculture 

 and of other sources. 



There are very many different species of insects ranging in 

 size from less than 1-50 of an inch to about 8 inches in length. 

 From the United States alone over 30,000 species have been 

 recorded of which over 400 are known to affect in greater or 

 less degree the apple tree or its fruit. Though there are many 

 that are, it must not be supposed that all insects are injurious 

 for by far the larger number are either harmless or actually 

 beneficial. Ruthless destruction of insects by means of trap 

 lanterns and the like is to be deprecated since these methods 



*Revised 1916. 



