168 NORTH AIVfERICAN INSECTS. 



The Akgo Tiger Motit (Arctia Argo) is a little different 

 from the preceding : it is smaller and not so highly colored. 

 Its caterpillar is of a very dark-green color, and is seen in 

 large numbers during the autumn, running on paths and 

 feedi«g upon grasses, but principally on the plantain. It 

 forms a coarse, hairy cocoon, in the same manner as the 

 former, in crevices. 



The White Miller, or Virginia ERanNE Moth {Arctia 

 Figure 4L Virginico), Fig. 41, is 



considered quite a 

 handsome moth. It 

 may be seen early in 

 the summer, flying 

 short distances in 

 meadows and gar- 



The White Miller. ^jg^g ^^^\^„ the day 



and in the evenings. It is generally white, though some- 

 times of a yellowish color, with a black spot near the centre 

 of the fore wings and two black spots on the bind wings. 

 The wings expand about one and a half inches. The eggs, 

 which the female deposits on the leaves of different herba- 

 ceous plants, are of a golden yellow color, and from them 

 issue caterpillars, which are thickly covered with hairs more 

 or less yellow, and which on this account are called Yellow 

 Bears. They become about two inches long, and feed on 

 every herb which comes in their way. The leaves of In- 

 dian corn are their favorite food, but they eat also those of 

 clover, peas, beans, and cabbages. They are, therefore, in- 

 jurious to vegetation, and ought to be destroyed whenever 

 met. 



1 The EusTY Vapor Moth. — This moth, also called Tus- 

 sock Moth {Orgyia leucostigma), Fig. 42, is neither distin- 

 guished for its beauty nor its size. Its wings expand only 

 about an inch, and are of a light-brown color, of very or- 

 fhnary and uninteresting appearance. But its caterpillar 



