100 



THE GYPSY MOTH. 



outbreaks occur but once in a number of years in any one 

 locality, in the same manner as do outbreaks of our native 

 insects, such as the forest tent caterpillar or white-marked 

 tussock moth, which are controlled by native parasites. A 

 determined effort is, therefore, now being made by. the 

 Massachusetts superintendent, in cooperation with the 

 Bureau of Entomology of the United States Department of 

 Agriculture, in importing those parasites and predaceous 



Fig. 11.— Killing the eggs of the Gypsy Moth in woodland, showing the large amount 

 of labor and expense involved in combating the pest in badly infected districts. 

 (After Forbush and Fernald.) 



insects which prey upon the gypsy moth in Europe. 

 Already large numbers have been imported from all parts 

 of Europe and are being carefully reared in strict confine- 

 ment at Saugus, Mass. It is the hope of everyone that these 

 importations may result, within a few years, in such an in- 

 crease of these enemies that they will be able to control the 

 gypsy moth. It is the belief of the writer that ultimately 

 either imported or native enemies of the gypsy moth will 

 control it, as they do our native insects; but Nature works 

 slowly, and whether such a condition will arise in five, ten or 



