258 A NATURALIST IN THE GREAT LAKES REGION 



succulent for a long time. Sawfly larvae (Fig. 384) appear late 

 in the spring. Moth and butterfly larvae are common, as are 

 also the adults. The cutworm moth (Fig. 385) flies out of the 

 short grass in the early spring and remains abundant all 

 summer. Its larvae feed on the wild strawberry plant. The 

 salt-marsh caterpillar (Fig. 386) and the " ghost moth" that 



FIG. 388. The Isabella tiger moth, Isia isabella, and its larva, the "woolly 

 bear" caterpillar, from Cornell Nature Leaflet. 



comes from it, the "yellow bear" (Fig. 387), and the hedge- 

 hog caterpillars and their moths, including the Isabella moth, 

 the caterpillar of which is known as the "woolly bear" 

 (Fig. 388), are common in all seasons, the caterpillars espe- 

 cially so in the fall. 



Then every plant of the prairie has its associated animals, 

 so a succession of animal forms appears as the spring plants 

 give place to the summer ones and these in turn to the autumn 

 types. 



