382 MISC. PUBLICATION 657, U. S. DEPT. OF AGRICULTURE 
narrow subdorsal line and two wavy lateral lines of the same color, 
also a median ventral stripe of yellowish. On the second thoracic 
segment is a pair of black, slender, stiff, erect, blunt spines nearly as 
long as the body is thick, and on each succeeding segment is a series 
ot small, sharp, black spines 
(Giles, 18%, 15). 
This species ranges from 
eastern Canada southward to 
Georgia and westward to 
Iowa and Minnesota. The 
larvae feed on the various 
species of oak. Each year 
they are usually reported as 
common to abundant in one 
or more localities, and, al- 
though the infestations in 
general are extremely local, 
often serious defoliation re- 
sults. The moths emerge 
from June to August, the 
egos are deposited in clusters 
on the under sides of leaves, 
the larvae are gregarious dur- 
ing the early instars and may 
be found from July to Octo- 
ber, and the winter is passed 
in the pupal stage in the 
ground. 
Anisota virginiensis 
(Drury), the brown Ani- 
sota, differs from the two 
preceding species in the thin- 
hess and transparency of the 
forewings beyond the discal 
dot, the stronger llac hues, 
and in the absence of the 
speckling. In the males the 
wings are triangular, but the 
costa of the hind wing is 
much rounded, the inner an- 
gle produced almost into a 
lobe, and the transparent 
area in the forewing is larger 
FiGuRE 73.—Larvae of Citheroniidae: A, than in A. senatoria. The 
Anisota stigma (F.); B, A, senatoria full-grown larva is about 2 
(A. & S.); C, A. rubicunda (F.) inches in length. The head 
is greenish to light brown, the 
prothoracic shield bears four blackish, flattened tubercles near the 
front, the second thoracic segment bears two long, slender horns vary- 
ing in thickness, and the body i is greenish, or erayish, densely granu- 
lated with white, marked by a subdorsal longitudinal stripe ‘and a 
lateral stripe of pink, and armed with short spines, shorter than those 
on A. stigma. ‘The anal plate and anal legs are amber colored, the 
other legs pale, and those of the midabdomen have a dark spot on the 
