NOCTUIDyE 



227 



worm. The larva; burrow into corn or tomatoes and do a 

 great deal of damage. 



Another important species is the cotton worm {Alabama 

 argillacea) wliich causes losses of millions of dollars in the 

 cotton crop of the Southern States. Occasionally extensive 

 flights of the moth bring swarms into the Northern States, 

 and sometimes these adults attack fruits such as peaches, 

 but it is not believed that the larvse grow on any Northern 

 plant. 



y Ohio 



Exp. Sta.) 



Army Worm (Leucania unipimcta) . — The army worm is a 

 widely distributed species in this country, only once in 

 twenty or thirty years multiplying in such enormous num- 

 bers as to attract general attention. When it does become 

 abundant grass land is stripped entirely of the green leaves 

 and the insects travel into adjacent fields to complete their 

 growth. They travel in immense hordes and devour all 

 vegetation as they go. Normally they are grass feeders and 

 are found in pastures and meadows and only when they are 

 unusually abundant do they migrate into other crops — wheat, 



