INSECT ENEMIES OF EASTERN FORESTS 447 
Another North Ameri- 
can species 1s V'etralopha 
asperatella (Clem.). The 
full-grown larva is about 
34 inch in length. The 
head is mottled with 
brown and yellow, and 
the body is brown, with 
two dorsal lines and a 
broad stigmatal stripe of 
yellowish. ‘The spiracles 
and legs are blackish. 
The larvae usually are 
gregarious and web to- 
gether two or more 
leaves, in which they live 
(fig. 98). This species is 
generally distributed 
through the oak regions 
of the Eastern States and 
is sometimes locally 
abundant. The moths 
emerge in June and July, 
and the larvae are found 
from July to October. 
The winter is passed as 
prepupal larvae in co- 
coons spun in the duff 
on the ground. These 
change to the pupal stage 
in the spring. 
Some common species 
very similar to the above 
are found on maple and 
poplar. Another, whose 
adults are determined as 
Tetralopha, near asper- 
atella, 18 sometimes lo- 
cally abundant on beech 
in New England. The 
larva of this species is 
yellowish green, the head 
being mottled with light 
brown. The body usu- 
ally has two pale-brown- 
ish stripes on the back, 
and the spiracles are 
black. The life cycle is 
similar to that of 7’. as- 
peratella. Another spe- 
cles, 7’. militella Zell., ap- 
parently is distributed 
792440°—49-__29 
Figure 97.—Tetralopha robustella: A, Web nest 
on red pine; B, full-grown larva, X 2, C, adult, 
DS 
Sta.) 
(B and C, Courtesy Conn. Agr. Expt. 
