Insects and Insecticides. 
7 
once the tenderest leaves and fold them about themselves for protec¬ 
tion. When abundant they may completely defoliate the trees. 
They disappear during June and do not appear again until the 
following spring. In the meantime the eggs may be found in little 
gray patches anywhere upon the bark of trunk or limbs. See 
Plate I, Fig. 5. 
Remedies .—Crush as many as possible of the egg-patches during winter 
and early spring. The best remedy is to spray thoroughly with one of the 
arsenites (4, 3, 6, 8, 5) as soon as the first leaves are out. Repeat in one week. 
Make a third application in another week or ten days if it seems necessary. 
Protect the toads and insectiverous birds, as both feed freely upon the 
rollers. The blackbirds are especially destructive to them. 
fall web-worm. ( Hyphantria cunea.) 
This insect is often mistaken for the next species. The webs are 
larger and loose or open and the caterpillars stay in them to feed. 
Fig. 1.—Fall Web-worm: a and b , caterpillars; c, chrysalis; d, moth. 
(Howard, Yearbook, U. S. Dep. of Agriculture, 1895.) 
When the leaves within the tent are devoured, the web is extended so 
as to take in more foliage. These tents also appear later in the season 
than those of the following species. They will seldom be noticed 
before the middle of July. The adult insect is a white moth, some¬ 
times speckled with black. See Fig. 1. 
