228 LEAF-FOLDERS. 
THE ROSE LFAF-FOLDER. 
(Cacoecia rosana Linn.). 
This common leaf-roller, found both in Europe and the 
United States, feeds also on the apple, wild-rose, raspberry, 
hazel, hawthorn, currant, gooseberry and other plants. It 
has not yet been found in Minnesota, but may occur here. 
THE CHERRY-TREE LEAF-FOLDER. 
(Caceecia cerasivorana Fitch). 
Caterpillars of this insect are frequently exceedingly 
numerous, not alone on the wild cherries but on the culti- 
vated ones as well. As long as they are still young they are 
not readily detected, but as they grow older they draw to- 
gether with silken threads the leaves and twigs of the 
infested plant, and in this manner form a very large and un- 
sightly nest. The caterpillars, which are gregarious in their 
habits, feed inside these enclosures; thev are about five-eighths 
of an inch long, nearly cylindrical, and have a black head; 
the body is yellow above and a little paler between the seg- 
ments, and is covered with a few very fine yellowish hairs. 
The anterior portion of the second segment and the pos- 
terior portion of the terminal one is black; there is also a 
faint dorsal line of a darker shade; the under side is similar 
to the upper in color and the six true claw-like feet are black. 
The caterpillars change to pupz inside the nest, and these 
latter, when about to give forth the moths, work their way 
out and hang suspended from the outer portion of the nest, 
clinging to it only by the hooks at the tail end of their 
bodies. Here the winged insects emerge, leaving the empty 
pupal skins projecting from the web. The pupa is of a pale 
brown color. The moths vary greatly in size, ranging from 
our-fifths of an inch to one and one-fifth inches across the 
