INSECTS IXJURIOrS TO COTTOX. 



197 



by applying Paris green in a spiay or dust, as for tiie 

 cotton-worms. 



Ftg. 111. — Garden. "Web- worm {Loxostege similalls). a, larva, en 

 larged; b, side view of abdominal segment of same; c, dorsal 

 view of anal segment; d, pupa; /, moth, enlarged. (xlfter 

 Riley, U. S. Dept. Agr.) 



Plant-lice (Aphidce). 

 The plant-louse Avhich is most frequently found injuring 

 the leaves of the cotton-plant is the same as the melon- 

 louse {Aphis gossypii). As upon melons, its worst injury 

 is done while the plants are yet young, and in such cases 

 the best practice is to destroy the infested plants and 

 replant in their place. A spray of kerosene emulsion and 

 water or similar irritant will kill them, and sometimes may 

 be used to advantage; but owing to the rapid and hardy 

 growth of the plant, and the fact that large numbers of 

 them are consumed by their insect enemies, plant-lice are 

 seldom of any great importance. 



IXJURIXG THE STALK. 



If it escapes the cutworms, the stalk of the plant will 

 not be troubled further with insects, as long as it is in a 

 healthy condition. Occasionally plant-bugs puncture the 

 new growth, but such damage is rarely of importance. 

 One of the boring-beetles, known as Ataxia crypta (Fig. 

 112), has been supposed to injure the stalk b}^ boring in 



