230 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



a dark green color with white stripes on the side of the body, those 

 of the northern species having a V-shape, while those of the south- 

 ern species being simple oblique hands. At the tip of the abdomen 

 is a stout horn, from which is derived the name of homworm, 

 which in the northern species is black and in the southern is red. 

 The pupse are formed in the soil, are dark brown, about two inches 



FIG. 163. Southern tobacco-worm (Phlegelhontius sexto) : a, adult moth; 

 b, full-grown larva; c, pupa natural size. (After Howard, U. S. Dept. 

 Agr.) 



long, and have a peculiar handle-like process, the sheath of the 

 proboscis, which somewhat resembles a horn and which may 

 account for the name of " hornblowers," commonly given them in 

 Maryland and Virginia. The pupal stage lasts about three weeks, 

 when the adults emerge, the whole life cycle requiring from six to 

 eight weeks. Usually two generations occur in a season through- 

 out most of the tobacco belt, but in the North there seems to be 



