THE DAVEY INSTITUTE OF TREE SURGERY 
acquainted with the conspicuous adult beetle when laying her 
eggs upon the bark. Figure 5 is a remarkable photograph of this 
beetle upon the trunk of a tree from which it has recently emerg- 
ed through one of the holes in the bark. Figure 6 is a cross sec- 
tion of the same tree, showing the destruction wrought by a few 
of the larve. 
67. It was first described by Fabricius in 1787 as Saperda 
candida,—the ‘‘white Saperda,” and in 1824 by Say as Saperda 
Courtesy Connecticut Agr. Exp. Station. 
Fig. 6 
Work of the rounded-headed apple tree borer in cross 
section. After W. E. Britton. 
bivittata or the “‘two-striped Saperda.” It has been extensively 
discussed under both of these names. 
68. Food Plants. This species has been reported as feeding 
upon the following plants: mountain ash, hawthorn, quince, apple, 
pear, crab apple, chokeberry and June-berry. 
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