172 



PESTS OF GARDEN AND FIELD CROPS 



The Army Worm {Leucania unipunda Haw.) 

 In occasional seasons naked, dull-striped worms, related to the 

 common cutworms, become abnormally abundant, march from field 



to field, and de- 

 vour corn, wheat, 

 oats, and other 

 related plants. 

 Individuals of 

 this species are in 

 our fields every 

 year, but we do 

 not particularly 

 note their pres- 

 ence until they 

 reach their times 

 of unusual abun- 

 dance, abandon 

 their normal 

 habits of remain- 

 ing concealed 

 during daylight 

 and feeding only 

 at night, and in 

 their search for 

 food form the 

 devastating 

 "armies." The 

 full-grown worm 

 is about 1 J inches 



Fig. 195. — Larva and work of long, dark in gen- 

 the Army Worm. Slightly en- gj-al color, with 

 larged. Original. ., n • i 



three yellowish 



stripes down its back and a stripe down each side, 

 stage of a dull, brownish moth. 



Fig. 196. — Work of 

 Army Worms on tim- 

 othy heads. Original. 



It is the younger 



