168 NORTH AMERICAN INSECTS. 
The Arco TiceR Morn (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 
feeding upon grasses, but principally on the plantain. It 
forms a coarse, hairy cocoon, in the same manner as the 
former, in crevices. 
The Wuire Mitter, or Vireiia Ermine Motu (Arctia 
Figure 41. Virginica), Fig. 41, is 
re considered quite a 
handsome moth. It 
may be seen early in 
m7) the summer, fiying 
short distances in 
meadows and gar- 

The White Miller. 
dens during 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 hind 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. 
The Rusty Varor Motu.—This moth, also called Tts- 
sock Morn (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- 
dinary and uninteresting appearance. But its caterpillar 
