MONTANA KXPERIMENT STATION. 1T7 



and of a greenish color lives within the rolled or crumpled leaves 

 feeding from the inside. When abundant, the larvae not only eat 

 parts of the foliage but cause the remainder to turn brown. The 

 larvae are very active and when taken into one's hand quickly wrig- 

 gle out and drop to the ground. 



There are two broods, one appearing in June and the other m 



August. 



The larvae feed on the foliage of strawberry, raspberry, blackber- 

 ry and various other plants. 



Fiff 24. The Strawberry Leaf-roller: a, larva, natural size; 1^' anterior ^end 

 of larva, seen Irom abov' enlarged: c. moth, enlarged, ^'^X^:';'\l^^\''^ 

 larva, seen from above, enlarged. (First Kept. Insects of Mo., Riley, 1869.) 



THE CHERRY FRUIT-FLY. i. 



The plum curculio is responsible for most "wormy" cherries but 

 ^'cherry fruit-fly" may appear in the market fruits and if m the 

 market is liable to escape to growing cherries. The cherry fruit 

 fly as its name indicates is a fly and it is the larva or maggot that 

 causes the damage. The work of the grub of the plum curculio is 

 usually apparent from the exterior of the cherry, but in the case 

 of this maggot the cherries may from the outside appear to be per- 

 fectly sound. 1 r 4.U 



The cherry maggots are verv light yellow in color and of the 

 shape and size shown in the small black circle, above, in the accom- 

 panying figure. 



The body of the fly is -black and the head and legs are of a light 

 yellow color. The wings are crossed by four blackish bands and 

 liave a blackish spot at the tip. 



This insect is not very well known as a pest of cherries. It has 

 been reported only from the eastern states. It is, however, one of 



I. RJias[oletis cingulata Loew. 



