

GIPSY MOTH AND BROWN-TAIL MOTH AND TIIKIIJ CONTROL. 



INJl III CAUSED BY THE BROWN-TAIL MOTH. 



9 



he principal injury caused by the brown-tail moth is due to the 

 feeding habits of the la r vie 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 



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a 



severe infestations trees may be completely stripped (figs. 5, 6), but 

 as the larva? become full-grown during the first part of June, there 

 is usually an opportunity for the trees to refoliate before midsummer.. 

 The young larvae that hatch in August frequently skeletonize the 

 i leaves to a considerable extent. This does not damage the trees 

 seriously, as the growing period for the season is nearly completed. 



18474 Bull. 56414 2 



