The Tussock Moth, 437 
Caterpillar of Tussock Moth—A conspicuous caterpillar with 
four short, brush-like tufts on its back, and two long, black 
plumes at the front, and one at the rear of the body—see en- 
graving. This leaf-eater is found on apple, pear, plum, and 
sometimes on other fruit trees, also on the walnut and oak. The 
caterpillars can be killed with a Paris green spray. The larva 
spins a cocoon sometimes in the fold of a leaf, more commonly 
in crotches or rough places on the bark, or even on adjacent 
buildings or fences, and the female, after emerging from the 
Cocoon, Moth and Eggs of Tent Caterpillar. 
cocoon, deposits her eggs upon the outside of it. The engrav- 
ing below shows the wingless moth and cocoon with the mass 
of eggs deposited upon it. The insect is fortunately very freely 
parasitized and prevented from wide injury. It can be reduced 
by destroying the egg-niasses during pruning, as they are white 
and very conspicuous. 
Tussock-moth Larva, Wingless Female and Cocoon with Eggs. 
Pear and Cherry Slug. —A small, slimy, dark-colored worm, 
with the fore part of the body notably larger than the rear part, 
eating the upper surface of the leaves but usually not making 
holes through them. The insect can be checked by throwing 
fine road dust or air-slacked lime over the tree, which cakes 
upon the slime of the worm and destroys it. On a large scale a 
Paris green spray is best. 
