178 



Bulletin 252. 



water. Repeat the application after the blossoms fall. Prevent the ascent of the 

 wingless females by means of sticky bands or wire-screen traps. 



This is the pinkish caterpillar which causes a large proportion 



Codling-moth, of wormy apples. The eggs are laid by a small moth on the 



(Fig. 147) leaves and skin of the fruit. 



Most of the caterpillars enter 

 the apple at the blossom end. When the petals fall 

 the calyx is open (Fig. 148), and this is the time to 

 spray. The calyx soon closes and keeps the poison 

 inside ready for the young caterpillar's first meal 

 (Fig. 149). After the calyx has closed, it is too 

 late to spray efifectively. The caterpillars become 

 full grown in July and August, leave the fruit, 

 crawl down on the trunk, and there most of them 

 spin cocoons under the loose bark. In most parts 

 of the country there are two broods annually. 



Immediately after the blossoms fall spray 

 with I lb. Paris green or 4 lbs. arsenate of lead 



in 100 gals, of water. Repeat the application 7 to 10 days later. For use with 

 Bordeaux see apple scab. Use burlap bands on trunks, killing all caterpillars 



Fi£ 



147. Codling-moth cater- 

 pillar in the apple. 



Fig. 148. Just right to spray. Tzco 

 apples from which the petals have just 

 fallen. Note that calyx lobes are zi.'idcly 

 spread. 



Fig. 149. Almost too late to spray 

 effectively. Note that the calyx lobes 

 are nearly together. 



J^Sg of codling-moth on young apple. 



under them every ten days from July 1st, to August rst, and once later before 



w'nter. Cornell Bulletin 142. 



A 1 . The small white maggots make brownish winding burrows in 



Apple-maggot ,„,..,. .... , , - ,, 



44 -n •^ J the flesh of the fruit, particularlv m summer and carlv lall var- 

 or Railroad- ■ ,• t^, ■ • ^ ' , ' , , , /, 



,, letics. i his nisect cannot be reached bv a spray as the parent 



fly inserts her eggs under the skin of the apple, \\'hen full- 



