INSECTS INJURIOUS TO THE STRAWBERRY 399 



reddish-brown, the fore-wings streaked and spotted with black 

 and white as shown in the illustration. When the wings are 

 folded, the dark area at the base forms a somewhat conspicuous 

 deeper brown patch in the middle of the back. The hind-wings 

 are of a soft, dark smoky gray, and both wings have long fringes. 

 The insects fly readily during the middle of the day, and run 

 rapidly on the leaves, diving to the under side or into a fold so 

 quickly that it requires close watching to follow their move- 

 ments. From the fact that newly set fields are often infested, it 

 is probable that they fly for some distance to seek their food 

 plant." Smith. 



" A badly infested strawberry-patch begins to look scorched 

 early in June, and before the middle of that month appears as if 

 a fire had been over it. The fruit, deprived of the food prepared 

 by the foliage, stops growth, ripens undersized or prematurely, or 

 shrivels up altogether, even before it colors." " Of ten every 

 lobe on a leaf will be folded, and occasionally, when infested 

 leaves cover or touch, an irregular mass of foliage is bundled 

 up in which as many as six or eight larvae may be found. 



"On blackberry not so large a part of the leaf is involved, 

 and frequently only the tip of one of the leaflets is webbed up. 

 Furthermore, the injury is more local, and only that part that 

 is actually eaten is harmed. The total amount of food really 

 devoured is very small, and were it not for the manner of feeding, 

 which interferes with the nutrition of the leaf, the strawberry 

 could easily spare tissue for all these caterpillars that ever infest 

 it. On the raspberry the habit is yet different. Here the larva 

 gets into a partly opened tip and webs it together so securely 

 as to check growth. The actual eating shows a rusty space on 

 the upper side of the leaf, and not much more harm is done." 



Control. As stated above, the young caterpillar, just after 

 it is hatched, goes to the upper surface of the leaf and feeds there 

 exposed for a day or two before folding the leaf. "It must be 

 the object of the grower to poison the foliage so early in the season 

 that when the young caterpillar starts feeding, it can find no 

 foliage it can safely eat. Therefore, as soon as moths are found 

 flying in fair numbers, spray with arsenate of lead. Experiments 

 in New Jersey have shown that complete control may be secured 

 with one application if this is thorough and applied at the right time. 



