68 



INJURIOUS INSECTS 



Army Worm is abundant, or in those that are in the range 

 of the destructive Western Grass-hopper, corn, of course, 

 suffers in common with other plants. It also is attacked 

 by the White Grub, and by several of the Cut Worms. 



THE CORN-WORM, alias BOLL-WORM. 

 (Heliotliis armigera, Hubner.) 



The " Boll-worm " has become a by- word in all the 

 Southern cotton-growing States, and the "Corn-worm" 

 is a like familiar term in those States, as well as in many 



Fig. 41. CORN OK BOLL, WORM. 

 a, Larva; b. Moth, Wings open ; c, Moth, Wings closed. 



other parts of the Union; but few persons suspect that 

 these two worms the one feeding on the corn, the other 

 on the cotton-boll are identically the same insect, pro- 

 ducing exactly the same species of moth. But such is 

 the fact, as I myself experimentally proved in 1864. It 

 attacks corn in the ear, at first feeding on the "silk," 

 but afterwards devouring the kernels at the terminal end; 

 being securely sheltered the while within the husk. I 

 have seen whole fields of corn nearly ruined in this way, 

 in the State of Kentucky, but nowhere have I known it 



