New York AGRICULTURAL EXPERIMENT STATION. 409 
of hairs, two extending V-shaped over the head and one diago- 
nally upward from the anal end. Also protruding from the 
back on the fore part of the body are four erect, short, brush- 
like tufts of white or yellowish hairs. Along the back, inter- 
rupted by the tufts and tubercles is a broad, velvety, black 
stripe. 
Pupa.— The pupa, which is enclosed in a very thin cocoon, 
is soft and fleshy, having a pale greenish or brownish color. 
The markings of the adult moth may be partly recognized 
before the insect emerges. The male pupa is slender with 
prominent antennal plates, while the female pupa is larger, 
more robust, and the antennal plates are not conspicuous. 
Adult The male and female moths differ greatly. The 
male is an attractive moth, with prominent legs, large feathery 
antenne, and slender body. It has normal wings, which are 
rounded in form and brown in color with delicate gray mark- 
ings. The female bears no resemblance to the male. It is 
‘“ wingless” and gray in color. The abdomen is sack-like while 
the legs and antenne are slender. 
LIFE HISTORY. 
The insect lives through the winter in the egg and in this 
latitude the caterpillars hatch some time during the latter part 
of May. It takes twenty-five to thirty-one days for the cater- 
pillars to complete their growth. The insect remains in the 
pupa stage from ten to fifteen days. At the end of this time 
the female emerges from the pupa and after mating, deposits 
her eggs upon the discarded cocoon. 
According to Dr. E. P. Felt, there is normally only one 
brood of caterpillars a year in the latitude of Albany. Our 
studies of the insect during the past summer confirm these 
observations, as there has been no evidence of a second brood 
about Geneva or Lockport. In Boston and New York City 
there are two broods and farther south, about Washington, 
D. C., there may be three broods. 
