THE BROWN-TAIL MOTH. 
i:;t 
are the ''nettling hairs." The white dashes along the 
sides of the abdomen are more prominent and enable the 
immediate identification 
of the caterpillar of the 
brown-tail moth from 
any other in New Eng- 
land. (See Fig. 21.) 
Pupa. — During the 
second week in June the 
caterpillars spin up thin 
silken cocoons of white 
silk among the leaves, a 
number often spinning 
cocoons together, so as 
to form a considerable 
mass of web. The co- 
coon is so loose in struc- 
ture that the caterpillar, 
or pupa, may be readily 
seen through it. Where 
Fig. 24.— Pupa?, U natural size, 
female. 
Male and 
Fig. 25.— Brown-Tail Moths, natural size 
Male above, female below. 
abundant, they will make the 
cocoons (Fig. 22) 
under fences, be- 
neath clapboards and 
in similar retreats. 
In these the caterpil- 
lars transform to pu- 
pa? about the middle 
or third week of 
June (June 15-18, 
1905). The pupa, 
shown in figure 24, 
is slightly over half 
an inch long, of a 
dark brown color, 
with a conical spine 
armed with numer- 
ous small hooks at its 
tip. Smooth, yel- 
lowish-brown hairs 
are scattered over the 
