Xew York AGiucuLTuitAL Expekiment Statiox. 273 



insect. lu every case it was confined almost entirely to the 

 trunks and lower limbs. 



Only peach trees were severely injured. Plum and apple trees 

 in the immediate vicinity were uninjured. 



Indications of injtirij to small branches and tu:'uj>i. — Injury to the 

 small branches and twigs was indicated in two ways: First, by 

 the dead leaves caused by the beetles boring into the buds, 

 Plate XXXYII, Figs. 1 and 2; and second, by the drops of sap 

 that exuded from the burrows in the sapwood, as shown natural 

 size at Fig. 3. 



As previously stated, very few of the peach trees in the orch- 

 ards near Youngstown that were infested on the trunk and 

 branches showed an^- evidence of the insects' work in the smaller 

 branches and twigs. On the contrary, the peach, ijlum and 

 cherry trees examined, both in Monroe County and at Geneva 

 and vicinity, were very slightly infested except in the small 

 branches. 



Character of the channels in the small branches. — These burrows 

 were of two kinds, the very short ones which were mere punctures 

 of the thin bark and the larger ones through the bark and for 

 from half an inch to an inch in the sap wood. In some cases 

 from two to nine punctures leading to each burrow were found. 

 Many of these burrows, opened September 20 and later, were 

 empty, others contained eggs; and in a few cases young larvae 

 were found. 



XOTES ox LIFE HISTORY. 



Observations upon the ajy laying habits. — Egg^s were first found 

 September 24, by Mr. P. J. Parrott while examining an infested 

 plum tree. Upon subsequent examination of infested plum and 

 peach twigs many of the burrows were found to contain eggs. 

 The number of eggs varied from one to twelve. Nine was the 

 largest number of unhatched eggs found, but in one burrow Mr. 

 Parrott found twelve young larvae, indicating that twelve eggs 

 had been deposited there. 

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