MONTANA INSECT PESTS, 1951-1952 33 



Potatoes 13 



Colorado potato beetle 13 



Potato psyllid 13 



Sugar Beets 14 



Sugar beet root maggot 14 



Sugar beet root aphid 14 



Beet webworm 14 



Spinach carrion beetle 14 



Spinach leaf miner 14 



Peas and Beans 14 



Pea aphid 14 



Pea weevil 14 



INSECTS DESTRUCTIVE OF GARDEN AND TRUCK CROPS 14 



Cruciferae 14 



Cabbage maggot 14 



Imported cabbageworm 15 



Root Crops 15 



Onion maggot 15 



Onion thrip 15 



Asparagus 15 



Asparagus beetle 15 



INSECTS DESTRUCTIVE OF FRUIT CROPS 15 



Orchards 15 



Black cherry fruit fly 15 



1951 15 



1952 15 



Rust mite 16 



Pear slug 16 



Black cherry aphid 16 



Codling moth 16 



Apple aphid 16 



Wooly elm aphid 16 



Pear leaf blister mite 17 



Small Fruits 17 



Millipedes 17 



Currant fruit fly 17 



Western raspberry fruitworm 17 



Raspberry cane borer 17 



Strawberry leaf roller 17 



INSECTS DESTRUCTIVE OF ORNAMENTALS 17 



Deciduous 17 



Boxelder bug 1J 



Ash borer 17 



Green ash aphid 18 



Ash flower gall 18 



Willow leaf gall 18 



Poplar borer 18 



Cottonwood leaf-stem gall 18 



Vagabond gall 18 



