ATTACKING THE LEAVES. 275 



lustre, becoming brown on the outer angle of the front edge 



of the wing, and paler towards the hinder and inner angle. 



The under surface of the 



wings is much paler than 



the upper. The body is dark 



brown, its hinder portion 



banded with lines of a paler 



hue. 



While partial to the grape, 

 the larva feeds also on thorn, 

 plum, raspberry, red-bud, 

 Cercis Canadensis, poplar, and probably other trees, shrubs, 

 etc. The insect is distributed over a wide area. Where they 

 are numerous enough to prove troublesome, they may be col- 

 lected and destroyed by jarring the trees or vines on which 

 they are feeding, when they will drop to the ground. 



Ho. 148. The Silky Pyrophila, 

 PyropJiila tragopoginis (Linn.). 



The caterpillar of this moth is of a yellowish-green color, 

 with a few very fine brownish hairs scattered over the upper 

 surface of its body. It is found feeding on the grape-vine, 

 and sometimes in sufficient numbers to become a source of 

 annoyance ; it attains full growth about the middle of June, 

 when it measures an inch and a quarter or more in length. 

 The head is small, green, the jaws tipped with brown ; the 

 upper surface of the body is yellowish green, a little paler be- 

 tween the joints ; there is a white stripe down the back, and 

 two of the same color along each side, the lowest one being 

 most distinct. On each segment there are several small 

 whitish dots, from each of which arises a single fine hair. 

 The under side is deeper in color than the upper. When 

 mature, it changes to a brown chrysalis, a little under the 

 surface of the ground, from which the perfect insect escapes 

 in July. 



The moth measures, when its wings are spread, about ail 



