ROUNDHEADED APPLE-TREE BORER. 23 



The third year (1916) 38 eggs were distributed among 10 of the 

 orchard trees, all evidently having been laid by females that flew 

 into the orchard over the 300- foot strip. 



Fig. 3, B. — Saperda Candida. Plat of Page orchard illustrating distance of flight of 

 female beetles during oviposition. Circles represent locations of infested trees and 

 the figures within show number of borers found. Orchard surrounded by 300-foot 

 strip cleaned of borers. Plat 2 : Number of borers found in second examination 

 (1915). Fifty-five borers present from eggs of current season. Crosses indicate 

 where two female beetles issued that had been overlooked as borers during the 

 previous annual examination. 



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Fig. 3, C. — Saperda Candida. Plat of Page orchard illustrating distance of flight of 

 female beetles during oviposition. Circles represent locations of infested trees and 

 the figures within show number of borers found. Orchard surrounded by 300-foot 

 strip cleaned of borers, Plat 3 ; Number of borers found at third examination 

 (1916). Thirty-eight borers were present, all having evidently hatched from eggs 

 deposited by females which had entered the orchard across the 300-foot strip. 



