INSECTS AND INSECTICIDES 
7 
ATTACKING THE FOLIAGE. 
LEAF-ROLLERS. 
The fruit tree leaf-roller (.Archips argyrospila ) is a green larva 
with a black head and measures about three-fourths of an inch 
in length when fully grown. The larvae begin to hatch with the 
opening of the buds of the apple trees in the spring. They attack 
at once the tenderest leaves and fold them about themselves for 
protection. 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 3, 4, 5, 6, 8, as soon as the first leaves are out. Re¬ 
peat 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 
Fig. 1.—Fall Web-worm: a and 6, caterpillars; c, chrysalis; d, moth. 
(Howard, Yearbook, U. S. Dept, of Agriculture, 1895.) 
