I UK GIPS1 MO I II. 
11:; 
gipsy moth. The mass of the tussock moth is pure white, 
while that of the gipsy is yellowish or dark creamy, from 
the hairs or scales from the body of the female, which 
cover it, which are entirely absent from the eggs of the 
tussock moth. The eggs of the tussock moth (see Figure 
6, which illustrates the well-known tussock caterpillar) are 
usually laid on the cocoon from which the female emerged, 
while those of the gipsy moth are laid directly on the bark 
of the tree. 
Fig. 6.— Eggs of White-Marked Tussock Moth on cocoons of females, and full- 
grown caterpillar, natural size. 
The Caterpillar or Larva. — (Figure 3.) The eggs hatch 
about May 1 and each mass or "cluster" yields a swarm of 
young caterpillars, the bulk of which become full grown by 
midsummer. Gipsy moth caterpillars of any age are decid- 
edly hairy. The mature caterpillar has a dusky or sooty- 
colored body. Along the back, counting from the head, 
