REPORT OF THE STATE ENTOMOLOGIST IQI2 IOI 
Bronze birch borer (A grilus anxius Gory). The destruc- 
tive work of this pest at Lansingburg, northern Troy, was recorded 
last year and observations the present season show that the tops 
of the infested trees have succumbed. Furthermore, this borer is 
well established in the southern part of Troy and in Washington 
park, Albany. It is probably becoming well distributed in this sec- 
tion, and the history of white birches in recent years in the west- 
ern part of the State may be shortly duplicated in the Hudson 
valley. 
The signs of injury are well marked and are first evidenced by 
the thin foliage and dying condition of the upper branches. A 
more detailed examination may result in finding well-marked an- 
nular ridges around some of the smaller branches, frequently ac- 
companied by reddish or rusty brown spots here and there on the 
white bark, indicating the operation of a borer beneath. This can be 
confirmed by cutting into the tree, especially where there are ridges 
and disclosing in the inner bark or sapwood a flattened, usually 
more or less sinuous channel. The only practical method of con- 
trolling this insect is to cut out and burn all affected wood prior 
to early May, since the beetles appear the latter part of that month 
or early in June and may then attack other trees. A more detailed 
account of this insect is given in the writer’s report for last year. 
Pine bark borer (Ips pini Say). This medium size to small 
bark borer is one of the most destructive of these forms in this 
section. An examination of conditions in the outskirts of Schenec- 
tady resulted in finding many dead white pines here and there in 
groves. They almost invariably had succumbed to attacks by this 
bark borer and the operations of its allies. The dead pines seen 
here and there had been killed earlier, while some showing needles 
were nearly dead and still others were found to be very badly 
infested though there was no appreciable change in the character 
of the foliage. The latter trees had the inner bark fairly riddled 
the last of August with the longitudinal galleries of the beetles 
and the irregular transverse expanding burrows of the grubs. 
Practically the only external evidence of the injury at that time 
was inconspicuous particles of brown or white sawdust thrown out 
by the beetles-as they were entering the trees, and an occasional 
pitch tube. The latter is about a quarter of an inch high and in 
diameter and is made by the beetle bringing out particles of pitch 
and piling them around the point of entrance. The presence of 
pitch tubes is indisputable evidence of the beetles attacking living 
