BULLETIX 609, U. S. DEPARTMENT OF AGRICULTURE. 
THE ADULT. 
(Fig. 1, a; fig. 3.) 
The general color of the upper surface of the body and wings of the moth 
is light yellow, the wings iridescent. A dark grayish-brown band begins at 
the humeral angle of the forewing, from which it extends to the eye, and con- 
tinues along the costal and outer mar- 
gins of this wing and the outer margin 
of the hind wing. On either wing this 
tband is widest at the apex. Inside the 
^ - ) -p , wmk band and about one-sixteenth of an inch 
from it a wavy line of the same color 
Fig. 2. — The sweet-'potato leaf-folder : a, 
First three joints of larva, showing 
legs and arrangement of spiracles and 
spiracular tubercles ; b, lateral view of 
a ventral segment ; c, pupa, ventral 
view. All greatly enlarged. (Original.) 
Fig. 3. — Wing venation and lateral 
view of head and antenna of a re- 
lated species. Pilooocis ramentatts, 
to show characters of genus. 
(Hampson.) 
crosses both wings. Two black spots occur on the forewing, near the 
costal margin. The outer and larger one is near the middle of the margin 
and the smaller one about halfway between this and the base of the wing. 
A short, wavy, dark grayish-brown line occurs just inside this small black 
spot, extending backward from the band on the costal margin to a point about 
halfway across the wing. There is also a small black spot on the hind wing, 
near the costal margin and about halfway between the base of the wing and 
the wavy line previously noted. The markings are shown in figure 1. a. 
The underside of the wings is lighter in color than are above, but have 
the same iridescent reflection with indications of the markings of the upper 
surface. 
The ventral surface of the thorax and abdomen is white. The antenna? 
are light yellowish brown, and the legs white, except that the anterior sur- 
Caces of the first pair are for the most part of a dark grayish brown. 
In the male the abdomen tapers more gradually to the posterior end than is 
the case in the female" The upper surface of the thorax also presents a more 
hairy appearance in the male, owing to the longer hairs of the tegulse or lappets. 
With a lens a third point of difference is seen in the short bristles present on 
the underside of the basal portion of the antennas of the male. These do not 
occur on the antennae of the female. 
