INSECT ENEMIES OF EASTERN FORESTS 437 
slightly granular, gradually increasing in thickness from the head to 
the sixth abdominal segment with the first to sixth abdominal seg- 
ments longer than the others. There are prominent reddish, sw ollen 
areas on the backs of abdominal segments 2 to 5, and another on the 
venter of the third. The back of the eighth abdominal segment bears 
two conical tubercles, and the cervical and anal shields are somewhat 
roughened. This species was recorded by Dyar (/4/a), as occurring 
in the northern part of the United States. In the Northeastern States 
the larvae are known to feed on white ash, gray birch, and yel- 
low birch. Chestnut, hickory, basswood, maple, and beech are listed 
by other authors. The larvae are most noticeable in July and August, 
when they are approaching full growth. They spin spindle- shaped 
cocoons in leaves drawn together with silk, and the moths emerge in 
September and October. 
The full-grown larva of 7'etracis lorata Grote is about 114 inches in 
length and resembles a rough twig. The head is grayish, flattened 
and square in front but not notched. The body is dull reddish brown 
with white markings, and there is a black median line from the fifth 
abdominal segment to the end of the supraanal plate. The tubercles 
are prominent. This species has been recorded in the United States 
from Maine to Pennsylvania and west to lowa. The larvae have been 
collected and reared on wild cherry. Other authors list hemlock and 
sweetfern as the food plants. The moths emerge in June, the larvae 
are found from July to September, and the winter is passed in the 
pupal stage. 
The full-grown larva of Abbottana clemataria (A. & 8S.) is about 
21% inches in length and purplish brown, resembling the bark on a 
twig. The head is rounded and slightly bilobed. The body is cylin- 
drical, with the second thoracic and fourth abdominal segments swollen 
above, and the tubercles on the back of the fifth and ninth abdominal 
segments are rather prominent. This species occurs from Nova Scotia 
south through the Middle Atlantic States and west into the Missis- 
sipp1 Valley. Its food plants include bittersweet, wild cherry, maple, 
and poplar. The moths emerge in May, larvae are present from June 
to August, and the winter is passed as pupae spun up in the leaves on 
the ground. 
The full-grown larva of Prochoerodes transversata (Drury) is 
purplish brown to light wood brown and about 2 inches in length. 
The head is rounded and flattened in front. The second thoracic seg- 
ment is swollen and streaked with reddish, the hinder part of the 
fourth abdominal segment is swollen above and marked with white, 
and the back of the eighth segment bears a pair of prominent tubercles. 
This species is recorded from the Atlantic States and Canada. Its 
food plants include apple, blueberry, wild cherry, sweetfern, maple, 
and willow. There are two generations in the Northeastern States. 
The first moths emerge in May “and J une, and the next brood in August. 
The larvae may be found from June thr ‘ough September, and the win- 
ter 1s passed in the pupal stage. 
Famity LACOSOMIDAE 
The moths of the family Lacosomidae somewhat resemble those 
of the silkworm. They differ markedly in structure, however, and 
