GIPSY MOTH AND BROWN-TAIL MOTH AND THEIR CONTROL. 9g 
INJURY CAUSED BY THE BROWN-TAIL MOTH. 
The principal injury caused by the brown-tail moth is due to the 
feeding habits of the larve in the spring. If the infestation is bad 
the caterpillars are often numerous enough to devour the leaves as 
fast as the trees are able to develop them. As the webs are made on 
the terminals, the growth of the trees is often severely checked. In 
Note old winter webs at tops of trees. 
(Original, ) 
Wie, 5.—Apple trees stripped by brown-tail moth caterpillars. 
severe infestations trees may be completely stripped (figs. 5, 6), but: 
as the larvee become full-grown during the first part of June, there 
is usually an opportunity for the trees to refoliate before midsummer. 
The young larve that hatch in August frequently skeletonize the 
leaves to a considerable extent. This does not damage the trees. 
seriously. as the growing period for the season is nearly ‘completed. 
18474°—Bull. 564—14——2 
