MONTANA EXPERIMENT STATION BULLETIN 504 25 



CONTENTS Page 

 INTRODUCTION 3 



GENERAL FEEDERS 5 



Grasshoppers 5 



1 953 Season 5 



1 954 Season 5 



Outlook for 1955 6 



Other Important Pests 6 



Mormon crickets 6 



Army cutworms 7 



Wireworms and false wireworms 7 



Army worms 7 



Pale western cutworms 7 



Red-backed cutworms 8 



Blister beetles 8 



Crested wheat plant bugs 8 



Flea beetles 8 



Western chinch bugs 8 



White grubs 8 



INSECTS DESTRUCTIVE TO FIELD CROPS 8 



Small Grains 8 



Wheat streak mosaic 8 



English grain aphid 9 



Say's plant bug 9 



Wheat jointworm 9 



Winter wheat mite .- 1 



Wheat stem sawfly - 10 



Western wheat aphid 1 



Corn - 10 



Corn earworm 10 



European corn borer 10 



European earwig 1 



Alfalfa and Clover 1 



Alfalfa weevil 1 



Lesser clover leaf weevil 1 



Lygus bug - 1 



Sweet clover weevil 1 



Variegated cutworm - 1 



Alfalfa seed chalcid 1 



Pea aphid - 1 2 



Potatoes - 12 



Colorado potato beetle 1 2 



Potato psyllid 12 



Flea beetle 1 2 



