174 OWLET-MOTHS. 
caterpillar has reached its full size towards the end of June 
it descends to the ground, where under some dead leaves it 
makes a very flimsy cocoon of silk, inside of which it changes 
to a brown pupa, which is densely covered with a peculiar 
bluish flour-like substance that rubs off very readily. 
The beautiful moth, shown in Fig. 174 and in Fig. 
175, Plate XXIV, has the fore-wings of a rich amber color, 
darkest on the hind-margin, with a broad diffused ash- 
colored band along the middle, not extending to the apex, 
which is brown. Several brown and white zigzag lines cross 
the wings. The hind-wings, usually so dull colored in Owlet- 
moths, are deep red, with a wide black band along the outer 
margin and a narrower one of the same color across the 
middle. 
The moth deposits her eggs, which are well hidden in the 
cracks of bark, during July and August. 
THE APPLE-TREE CATACOLA. 
(Catacola grynea Cram.). 
This is another species found rather abundantly in Min- 
nesota. The moth is not as brightly colored as the one 
described before, but is also a very fine insect. Its fore-wings 
are uniformly grayish-brown, marked with zigzag lines of 
rich brown and gray, and with a number of very dark-brown 
short streaks on the anterior margin. The under-wings are 
reddish-yellow, margined with lighter reddish-yellow, and 
crossed by two wavy black bands. It is shown in Fig. 176, 
Plate XXIV. 
The caterpillar is ashen-brown with a reddish cast. An 
indistinct light-colored dorsal line and two or three indis- 
tinct lateral light-colored stripes distinguish it. On the 
dorsal space is a row of small prickles, of which those on the 
posterior part of each segment are the largest. There are 
three small points on the sides of each segment arranged in 
