INTRODUCTION. 



The fifth annual report of the Entomologist of the State 

 Experiment Station of the University of Minnesota, respect- 

 fully submitted to His Excellency, Governor John Lind, con- 

 tains an account of all beetles found in Minnesota which in 

 their larval and adult stages are destructive to our fruit- 

 bearing trees, shrubs and canes, and which frequently' cause 

 considerable losses to our fruit-growers. 



As orchards are now established in many parts of the 

 state, and as the insects destructive to the plants are not as 

 well known to our horticulturists as they are to those in the 

 older settled regions of the United States, where horticul- 

 ture as a business has been carried on for many years, a re- 

 port describing and illustrating these insects, and giving the 

 best remedies to prevent their injurious influence, is much 

 needed. It was, however, impossible to describe all the 

 numerous and destructive insects found in our orchards in 

 one single report, and for this reason only the very import- 

 ant order of beetles is described in the following pages. Since 

 the equally important order of butterflies and moths has 

 been treated in a similar manner in the fourth annual re- 

 port, the present one may be called a continuation of the 

 same, and it is the intention to describe the rest of the in- 

 sects injurious to the same plants in the next report. 



It would, perhaps, have been best to have the insects de- 

 scribed in this report arranged according to their food- 

 habits, but to make it also useful to students of our public 

 schools, etc., the insects are arranged according to the class- 

 ification of Coleoptera usually adopted, and the different 

 families have been described in a few words. 



There remains for the Entomologist the pleasant duty of 



