WEBWORMS EATING THE LEAVES 183 
Fig. 220.— Adult of the Hedgehog Caterpillar. Originai. 
The Saddle-back Caterpillar (Sibine stimulea Clem.) 
This is a short, broad caterpillar, distinctly spiny. There are two 
especially long spines at each end. The body is dark at either end, 
light green in the middle, and in the center of the green area is a dark, 
oval spot. The spines cause irritation if they come in contact with the 
Fic. 221.— The Saddle-back 
Caterpillar. Original. Caterpillar. Original. 
skin. Care should be taken not to handle the caterpillar or to touch it 
inadvertently. 
The Garden Webworm (Lovostege similalis Gn.) 
Corn and cotton, and sometimes beets or garden crops, are invaded by 
hordes of yellowish worms, one half to three fourths of an inch long, 
marked with many small, dark dots. They spin webs over the plant and 
skeletonize the leaves. The pest appears early in the season, having 
migrated from pigweed, which is the normal food plant, or from alfalfa, 
