INSECTS INJURIOUS TO THE STRAWBERRY 



453 



first a light-green color with a large head and long hair, which 

 becomes less noticeable as it grows. 



It soon commences to draw the edges of the leaf together, 

 folding the upper surface on the midrib, holding it together by 

 numerous strands of fine silk. The insect then spins a partia 

 tube or lining inside, in which it remains until the moth develops. 

 Unless disturbed the larva does not leave this folded leaf, and all 



FIG. 324. Strawberry leaf folded by the leaf-roller. (After J. B. Smith.) 



the feeding is done out of the reach of sprays. The larva becomes 

 full grown in about four weeks, when it is about half -an inch long 

 and of a dark-green color, until just before pupation, when it 

 becomes more yellowish. The head and thoracic shield are 

 shining brown, and the small body tubercles are slightly lighter. 

 The larvse are slender and very active, wriggling violently when 

 disturbed or taken from their webs. 



