Some Insects Injurious to Vegetables 



L343 



and came into New York State about L868 or L870. The parent. 

 butterfly has two pairs of large, strong, white wings. Each of the 

 front wings has a black patch in the 

 outer corner and one or two black 

 dots near the outer edge (Fig. 397). 

 The butterflies appear early in the 

 spring, and the mother insect soon lie- 

 gins to deposit her whitish or pale 

 yellow eggs on the leaves of the cab- 

 bage, one in a place. These hatch in 

 about rive days, and the tiny green 

 worms appear. The velvety green 

 caterpillars become full grown in 

 about two weeks and each one trans- 

 forms to a pupa which, owing to its 

 peculiar appearance and silvery 



markings is called a chrysalis. 



T,, . ,, , ' n . Fig. 397. — The Imported 



Hie insect remains m the chrysalis cabbage Butterfly; Male 



stage from one to two weeks when the Above, Female Below 

 butterfly appears, thus completing the life cycle ( Fig. 398 ). There 

 are at least three broods in New York. It hibernates as a chrysalis. 

 Control. The caterpillars riddle the outer leaves of the plant 

 and crawl down into the head, where they injure and soil the 

 tender white leaves. 





Fig. 398. — Parts of 'Cabbage Leaf, With Egos at 

 A. Caterpillars at B, and Chrysalis at C 



This cabbage pest is best controlled by spraying the cabbages 

 with arsenate of lead, 3 pounds to 50 gallons of water, or with 



