CATERPILLARS THAT FEED ON THE HOP-VINE. 41 
THE WHITE-MARKED TUSSOCK MOTH. 
(Orgyia leucostigma Sm. & Abb.) 
This omnivorous insect I found in some numbers on the bop; not 
sufficiently numerous to attract the attention of growers, but suffi- 
ciently abundant to form the nucleus from which future broods may 
spring; numerous enough to demand notice. The larva, when full- 
grown, is from 1 to 14 inches in length, of a bright yellow color, spar- 
ingly clothed at the sides with pale hair. There is a dusky stripe on 
each side, and a darker or black stripe on the back ; the head and two 
little warts on the ninth and tenth rings are bright coral red; there 
are two tufts or pencils of long, black hair on the first segment, and a 
single, similar tuft on the eleventh; the fourth, fifth, sixth, and sev- 
enth segments have each a thick brush of short, stout, yellow hair, giv- 
ing the larva rather an odd but at the same time pretty appearance. 
When full-grown it spins a cocoon, and transforms into a whitish pupa. 
The female moth, emerging from the pupa, is wingless, and never moves 
further than the upper side of the cocoon from which she emerged. 
The male is winged; the wings expand about 1 inch; are of a deep ash 
gray, crossed by darker lines. The eggs are laid on the empty cocoon 
of the female; are covered by a white, frothy matter which soon hard- 
ens; and, when laid in the fall, do not hatch until the following spring. 
These insects can be easily controlled. The cocoons and egg-masses 
are attached either to the leaves, vines, or hop poles, or occasionally to 
fences surrounding the yard. The vines are usually burnt when pick- 
ing is over, and the egg masses on the vines are thus destroyed; the 
poles should be examined either when stacked for the winter or when 
set in the spring, and the adhering egg-masses should be collected and 
destroyed. Being white, they are easily seen, and as each egg-mass 
contains the embryos of caterpillars enough to eat up all the vines on 
a hill, the time employed in collecting it is not entirély wasted. During 
the winter, or in early spring, the fences surrounding the yards should 
be examined and the egg-masses picked off and destroyed. In this 
way yards can be kept free of this pest. 
THE FALL WEB.WORM. 
(Spilosoma cunea Drury) 
In several yards I noticed the vines on a number of poles enveloped 
by the web of the common Fall web-worm, so often seen on fruit trees. 
There is no need to describe the insect, as it is so well known, and there 
is no need for hop-growers to suffer any loss from it, for the whole 
colony can be destroyed when first noticed by simply cutting off the 
arms and leaves which are spun up and trampling them under foot. 
