WEBWORMS 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 Webworm (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 :+ 
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, either 
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. 226.— The Cabbage Fig. 227.— Adult of the Cabbage 
Webworm. Original. 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 poison the caterpillars, since they are not 
hidden in their webs when feeding. Either Paris green or arsenate of 
lead is effective. 
