Chalcosiidae 
These soldier-like files are formed by worms in black and 
yellow uniforms which produce a moth popularly known as 
the American Procris. 
The eggs from which 
they hatch are laid in 
small clusters on the 
under side of the leaves, 
and while the worms 
are small, they leave un¬ 
touched the most deli¬ 
cate veins of the leaf, 
which then presents the 
appearance of fine net¬ 
work, as shown in the 
right of the figure (211); 
but when they become 
older and stronger they 
devour all but the larger 
ribs, as shown at the — 
. ~ ~ Fig. 211 .—Harrisina amencctna. 
left of the figure. . . . (After Rii ey .) 
Larvoe. 
When full grown 
these worms disperse over the vines or forsake them entirely, 
and each spins for itself a small, tough, whitish, flattened cocoon, 
within which, in about three days, it changes to a chrysalis, three 
tenths of an inch long, broad, flattened, and of a light shining 
yellowish-brown color. In about ten days afterwards the moths 
begin to issue.” 
The insect is double-brooded. It is common in the Appala¬ 
chian subregion, ranging from the Atlantic to the borders of the 
Great Plains in the West. 
FAMILY CHALCOSIID/E 
“ Daughters of the air.”—D e La Fontaine. 
This family is represented in our fauna by but a single insect, 
belonging to the genus Gingia, established by Walker. It is an 
obscure little moth known as Gingia laterculse Dyar. Its habi- 
fat is Arizona. 
313 
