104 



INSECTS INJURIOUS TO THE APPLE 



Control. Spray thoroughly with arsenical insecticides before 

 leaves expand. Spray ing for codling moth, after the petals fall, 

 will aid in controlling the curculio. All fallen fruit should be de- 

 stroyed. As an additional measure, the trees might be jarred every 

 few days in the early morning, catching the beetles on a sheet 



FIG. 127. Plum curculio, larva, pupa, adult. Hair lines show natural size. 



below and destroying them. The jarring is done before the adults 

 lay their eggs on the young fruit. 



The Apple Curculio (Anthonomus quadrigibbus Say.). This 

 is a small, brown weevil or curculio which comes out from hiberna- 

 tion quarters early in the spring, punctures the young fruit with 



6 a 



FIG. 128. The apple curculio, larva, pupa and two views of adult. (After Riley.) 



its beak, and deposits an egg in the puncture. The eggs are yel- 

 lowish, oval in shape, and hatch in from four to five days. The 

 period of greatest egg-laying is late spring and early summer. 

 The native food is hawthorn and wild crab, but the insect is also 

 fond of cultivated fruit, and from sixty to one hundred eggs are 

 laid by a single female. 



