556 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



of the larvae. A large proportion of the hibernating larvae are de- 

 stroyed by woodpeckers and nut-hatches during the winter and 



they should be attracted to the orchards 

 by hanging up bones and suet. Pick- 

 ing up the fallen apples and destroying 

 them before the larvae have left them to 

 form their cocoons will do much to 

 lessen the numbers and will aid in 

 the control of other insects. Cellars and 

 storage houses where apples are kept 

 over winter should be screened to pre- 

 vent the exit of the moths in the spring. 

 The principal method of control, how- 

 ever, is in spraying with arsenicals, 

 which, when properly done, will destroy 

 practically all of the larvae. Although 

 Paris green and arsenite of lime have long 

 been used for this purpose, arsenate of 

 lead is now preferred on account of its 

 superior adhesive qualities and because 

 there is less danger of burning the foliage 



FiG.492.-Larvaofthecod- with it. Where Bordeaux mixture is 

 ling moth only a few 

 days old, showing tuber- 

 cles much enlarged. 

 (After Slingerland.) 



sprayed for fungous dis- 

 eases at the same time 

 Paris green may be ap- 

 plied with it and the 

 Bordeaux will cause it to 

 adhere as well as arsen- 

 ate of lead and there will 

 be little danger of burn- 

 ing with a good quality 

 of Paris green . One-third 

 pound per barrel of Paris 

 green, 2 or 3 pounds of 

 arsenate of lead, or 1 



FIG. 493.-Full grown larva of the codling moth 

 enlarged about three times. (After Sling- 

 land.) 



quart of stock solution of arsenite of lime are the proper strengths 

 for general use. The first spraying for the codling moth should 



