104 INJURIOUS INSECTS. 



Conclusions. — It seems firmly established (l) 

 that resin-lime mixture and Paris green, thoroughly 

 and carefully applied when plants are one-third 

 grown and again just before the heads are formed, 

 will almost wholly prevent damage to late cabbage 

 and cauliflower; (2) that the expense need not 

 exceed $2.00 per acre, and (3) that there need 

 be no danger to the consumer from such treat- 

 ment. 



THE CABBAGE PLUTELLA. 



This moth has been described under the follow- 

 ing names : "The Web Moth," "the Cabbage Leaf- 

 miner," "the Diamond-back Turnip Moth," "the 

 Diamond-back Cabbage Moth," "the Diamond- 

 back Moth," and "the European Cabbage Web 

 Moth." The caterpillar is a pale green worm about 

 one-fourth inch long, with stiff dark hairs scattered 

 over the body. It is usually found hidden under a 

 web. If touched it will fall a short distance and 

 hang by a delicate silken thread. When feeding it 

 usually leaves its web, especially when nearly full 

 grown. When full grown, the larva spins a thin 

 cocoon in a fold on either side of the leaf. The moth 

 is rarely seen except when frightened from its hid- 

 ing place." Thorough treatment with arsenites for 

 the cabbage butterfly will prevent any unusual out- 

 break of the plutella. 



THE ZEBRA CATERPILLAR. 



Though rarely occurring in injurious numbers, 

 this pest sometimes attacks late cabbages and other 

 Brassicas. It is easily distinguished by its velvety 



