THE BUTTERFLIES AND MOTHS 



207 



FlG. 326. The salt-marsh caterpillar (Estigmene acraea}, one of the 



" woolly bears " 



The tiger-moths (Arctiidae) are well named, for many of them 

 are conspicuously striped or spotted with orange, red, or black. 

 Among the larvae are the well- 

 known hairy ' woolly bears," 

 which crawl across the walks 

 in late fall and early spring, 

 faithful harbingers of winter 

 and summer. The moths are 

 frequently attracted to lights, 

 when their brilliant colors al- 

 ways command attention. On 

 some of the larvae the hairs 

 are massed into brushes much 

 like those of the tussock-moths, 

 as is the case with the com- 

 mon harlequin milkweed cater- 

 pillar (Cycnia cgle), which is 



FIG. 327. The hickory tiger-moth (Hale- 

 sidota caryae] and its larva 



clothed with tufts of orange, black, 

 and white hairs, and is the most 



FIG. 328. The common red-and-black .,, .,, 



caterpillar of the Isabella tiger-moth common caterpillar on the milk- 



(Pyrrharctia isabella} Weed. Our mOSt Common Species 



(After comstock) is possibly the Isabella tiger-moth 



