178 FESTS OF GARDEN AND FIELD CROPS 



The normal range of this species is through the Gulf states and neigh- 

 boring territory. Remedies are the same as for the imported cabbage 

 worm. 



The Diamond-back Moth {Plutella 77iaculipemiis Curt.) 



Tiny active green worms, scarcely more than a quarter of an inch long 

 when full grown, eat small holes in the leaves of cabbage, and occasion- 

 ally become so numerous that notable damage is done. The adult is a 

 delicate moth. There are two or three generations in the North, and 

 half a dozen or more in the South. 



The remedies given for the imported cabbage worm will readily hold 

 this species in check. 



The Cabbage Looper (Autographa brassicoB Riley) 



At the same time that the imported cabbage worm is found feeding 

 on cabbage heads this species is likely to be observed at similar mis- 



FiG. 207. — The Cabbage Fig. 208. —Adult of the Cabbage 



Looper. Original. Looper. Original. 



chief. It is a light green worm, with a faint whitish stripe down each 

 side, and moVes with a looping movement, often resting with the middle 

 of its body elevated. 



Remedies are the same as for the imported cabbage worm. 



The Celery Looper {Plusia simplex Guen.) 



Occasionally this species becomes abundant enough to be a pest, 

 destroying the leaves of celery. It is a smooth-bodied caterpillar, and 



