324 
THE STUD V OF INSECTS. 
with black. The hind wings are red, pink, or yellow, and 
are margined or spotted with black. The thorax is usually 
marked with three black stripes, of which the lateral ones 
are borne by the patagia. There is also a black line or a 
row of black spots along the middle of the back of the ab¬ 
domen, and a similar row of spots on each side. Our most 
common species of this genus is Eyprepia virgo (Fig. 396). 
The larva of this species feeds on pigweed and other un¬ 
cultivated plants. 
Family LlTHOSHD/E (Lith-o-si'i-dae). 
The Footman-moths or Lithosiids (Li-tho'si-ids). 
The Lithosiidae include small moths with rather slender 
bodies, filiform antennae, and usually narrow front wings and 
broad hind wings. As a rule they are closely scaled insects 
of sombre colors, a fact that has won for them the title of 
Footman-moths; but in case of some of the species their 
livery is very gay. Some species fly by day, while others 
are attracted to lights at night. 
This family is closely allied to the Arctiidae; in fact it is 
sometimes difficult to tell to which of these families a species 
belongs. Usually the Footman-moths can be distinguished 
by the absence of ocelli; but some species possess very small 
ones. The palpi are small or moderately developed; the 
maxillae are present and quite well developed. The vena¬ 
tion of the wings differs greatly in the different genera; but 
in its more important features it resembles that of the Arc¬ 
tiidae. 
The larva, are cylindrical and covered with short, stiff 
hairs. The majority of the species whose transformations 
are known feed upon lichens. They transform in very deli¬ 
cate cocoons or have naked pupae. Among our more com¬ 
mon species are the following:— 
The Pale Footman, Crambidia pallida (Cram-bid'i-a pal - 
li-da.—This moth is of a uniform drab color, with the abdo¬ 
men and the inner part of hind wings paler; it expands nine 
