302 



PESTS OF ORCHARD AND SMALL FRUITS 



The Oblique Banded Leaf-roller {Archips rosaceana Harr.) 



Active, light green or rosy caterpillars, three quarters of an inch 

 long, with a darker stripe down the back, roll up the leaves, fasten 

 them with silk, and feed within. They infest apple and other fruit 



trees, raspberries, roses, and straw- 

 berries, and often are destructive to 

 flowering plants in greenhouses. Pu- 

 ^^^^ pation takes place within the folded 



1^^^ mBB^L leaves. The adult is a smooth, 



I^H^^ H^I^Im brownish moth. See page 188. 



<^^^K ^^tBSm Control is often difficult, but a 



^l^^lk ^^KBF prompt, thorough use of Paris green 



^^^^^ ^ BB or arsenate of lead will check the pest. 



The Fruit-tree Leaf-roller 



{Archips (Cacoecia) argyrospila Walk.) 



Fig. 455. — Work of the Fruit 

 tree Leaf-roller. Original. 



The young leaves and fruit of or- 

 chard trees and bush fruits are at- 

 tacked by yellowish larvae, which spin 

 threads wherever they go, drawing leaves somewhat together. The 

 full-grown worm is about an inch long, has 

 a black head, and has a few short hairs 

 scattered over its body. It is active when 

 disturbed. 



The pest appears very early in spring, 

 when the buds are first unfolding. It hatches 

 from eggs laid in flat masses on the bark. 

 There is one generation annually. 



Early spraying with arsenate of lead or 

 Paris green at the time that the buds are 

 opening, and again when the blossoms have ^'^.Jttr^^^taf-^illt! 

 fallen, is the means of control. Original. 



