New York AqricutturaL Exprrtment Sration. 381 
TWO OTHER TENT CATERPILLARS. 
As previously stated on page 365 there are two other species of 
tent caterpillars common in the east; these are the forest tent 
caterpillar, Clisiocampa disstria Hubn., and the fall web worm, 
Hyphantria cunea Dr. : 
THE FOREST-TENT CATERPILLAR 
This species is closely related to the apple tree tent caterpillar 
and is undoubtedly often confounded with it. As its name indi- 
cates, however, it feeds principally upon the leaves of forest trees 
of which the maple seems to be its favorite. But it also feeds 
readily upon various species of fruit trees, and was quite common 
in the apple orchards last year, often feeding in cotnpany with the 
apple tree tent caterpillar. 
The habits of the two species are quite similar. The egg 
masses of the forest tent caterpillar are placed in a similar man- 
ner, but can be readily distinguished, as they are of nearly uni- 
form diameter and are cut off more abruptly at the ends. The 
young caterpillars appear at about the same time in the spring and 
at first resemble their near relatives quite closely. But they soon 
begin to show a difference in markings, and when full grown can 
be readily distinguished by the dorsal row of white diamond 
shaped spots in place of the unbroken white line characteristic of 
the other species. 
The web of this species is delicate and inconspicuous. In 
many cases there appears to be no web at all. The adults are 
easily distinguished by the oblique lines on the fore wings which 
are dark in color instead of light, as with the foregoing: species. 
The space between the lines is also usually darker. 
THE FALL WEB WORM. 
The webs of this species are frequently conspicuous in the fall 
upon forest and fruit trees. Of the fruit trees it seems to prefer 
the apple. The eggs are placed upon the leaves and the cater- 
