182 
HALF HOURS WITH INSECTS. [Packard. 
Massachusetts, many persons noticing their attacks ; and it 
seems to be a common insect all over New England. When 
fully grown it crumples the leaves, disfiguring the whole 
tree, and doing great damage to the fruit-buds and flowers, 
thus directly lessening the apple and pear crop. About the 
first of June they cease eating, and make a loose, delicate 
silken cocoon in the folded leaf. They remain several days 
— sometimes nearly two weeks — in this condition before 
assuming the chrysalis state, about the 16th of June, and the 
moths are seen flying about and entering houses, attracted 
by the light within, during the last week of June and the 
first of July. The chrysalis is brown and of the usual 
shape, and, as Harris states, has but a single row of teeth 
along the dorsal side of each abdominal segment. After the 
moth has slipped out of the pupa case, the empty shell re¬ 
mains attached by the tip of the abdomen to the surface of 
the leaf. 
The moth is of a dark ash color, the fore wings being usu¬ 
ally paler in the middle. The basal third of the wing is 
dark ash mottled with paler scales, the outer edge of the 
dark area being angulated just behind the middle of the 
wing. The costa is marked with light and dark bands. On 
the outer third the wing is nearly as dark as on the base; 
near the outer edge, and half-way between the costa and 
hind edge, are four well-marked longitudinal black spots, or 
short lines running parallel with the costa, or front edge, of 
the wing; the one nearest the costa is simply an elongated 
dot, the second and largest is an oblong spot and twice as 
wide as the third spot, while the fourth again is much 
smaller. There are three similar black marks situated on 
the inner edge at the outer third of the wing. When the 
wings are folded over the back, these black marks, collec¬ 
tively, make a rudely triangular figure. The outer third of 
the wing is also variously banded and mottled with leaden 
blue and tawny brown scales. The fringe is brown and 
22 
