REPORT OF THE STATE ENTOMOLOGIST I906 55 



is about 18 inches in diameter and at the time the photograph 

 was taken was in rather thrifty condition despite the fact that one 

 side was completely girdled by the operations of this borer. It 

 will be seen, by reference to the illustration, that the dead area 

 had already commenced to enlarge and it was, therefore, not sur- 

 prising on examining the tree in November of this year to find 

 that the area of the exposed wood had greatly increased. The 

 gallery shown in the figure was approximately 4 feet from the 

 ground. At the present time the entire affected side [pi. 2], from the 

 ground to 8 or 10 feet above, is dead, the bark has decayed or 

 fallen away, and a large proportion of the magnificent Hmbs and 

 branches on that side of the tree has disappeared. This illustrates 

 in a striking manner the destructive nature of this insect's oper- 

 ations. It is very probable that an injury of this character could 

 be helped by bridge grafting, and it is presumable that extremely 

 beneficial results would have been obtained even if this means had 

 not been employed until two or three years after the initial injury, 

 provided the bridge grafts were inserted in rather vigorous tissues. 

 It certainly illustrates the necessity of closely watching our valuable 

 maples and early adopting measures which will assist in their 

 recovering from such injury. 



We have shown elsewhere that the early work of this insect is 

 readily detected by a careful examination in the fall, and the labor 

 involved in cutting out and destroying the young grubs is very 

 slight in comparison with the value of the trees. Systematic ex- 

 aminations by one familiar with the early operations of the borer 

 should be most productive of good results and we commend the 

 adoption of such methods to all villages possessing maples badly 

 infested by this destructive insect. 



White marked, tussock moth (Hemerocampa leuco- 

 stigma Abb. & Sm.). This leaf feeder, like the elm leaf beetle, 

 is preeminently a city pest. The season of 1905 was marked by 

 extensive injuries by this species in Buffalo, Lockport, Geneva, 

 Rochester, Syracuse, Utica, Albany, Troy and Brooklyn. Some of 

 these municipalities, as a result of popular agitation, adopted more 

 or less effective measures for the control of this pest, and many egg 

 masses were collected and destroyed during the early spring of 

 1906. Some sections of certain cities were largely freed from the 

 pest as a result, while in other places the caterpillars were exceed- 

 ingly abundant and destructive during the past season. This was 

 particularly true in portions of New York and Brooklyn, Albany, 

 Troy, Binghamton and Buffalo. 



