WEB WORMS EATING THE LEAVES 



185 



Late fall plowing will break up the winter cells in the soil. Paris 

 green or arsenate of lead may be used as a direct means of control. 

 The poisons should be applied promptly, at the first sign of the presence 

 of the pest. 



The Southern Beet Webwornl {Pachyzancla bipunctalis Fab.) 



In the South a webworm, similar in habits to the 'common garden 

 webworm, has been found feeding on beets. The full grown worm I? 

 three fourths of an inch long, slender, dark green in color. The adult is a 

 yellowish moth, expanding one inch. There are at least four generations 

 annually. To control, apply arsenate of lead or Paris green, cither 

 dry or as a spray, as soon as the worms are first observed. The 

 poisons should be applied promptly to be effective. 



The Cabbage Webworm (Hellula undalis Fab.) 



In the Southern states cabbages, turnips, and related crops are dam- 

 aged by a small, striped caterpillar, which spins webs in the leaves for 



Fig. 22G. — The Cabbage 

 Webworm. Original. 



Fig. 227. — Adult of the Cabbage 

 Webworm. Original. 



shelter, feeding exposed, but retiring to the webs when resting. When 

 full grown, the worm is half an inch long, yellowish in ground color, and 

 ornamented with five narrow stripes down its body. Injury is most 

 apt to occur in late summer, on young plants set out for fall crops. 

 Arsenicals may be used to i)oison the caterj)illars, since they are not 

 hidden in their webs when feeding. Either Paris green or arsenate of 

 lead is effective. 



