CATERPILLAR BORING IN MAIN STEM 



133 



1 



to a ncighl)oring stalk. The entrance and 

 often the exit holes of the worms are evi- 

 dent, together ^^^th castings thrown out 



Fig. 115. — Stem cut open, showing larva of 

 Stalk Borer at work. Original. 



of the burrow, and the plant often wilts 

 bej'ond the point of attack. 

 The full-grown larva measures about an 



Fig. 114.— Work of the 

 Stalk Borer. Original. 



Fig. 1 1G. — Adult of the Stalk Borer. Original. 



inch in length. It is marked with five longitudinal stripes, but those 

 on its sides are broken and wanting from the third to the seventh 

 segments. The adult is a gray moth. Eggs are laid in the fall on 

 the ground near suitable food plants, and hatch the next spring. 



