16 



Fig. 27. The Scurfy Bark-louse. 



Other scales, such as the Forbes and Putnam's, may be found , n 

 apple-trees, but thus far have not been abundant, and therefore have at- 

 tracted little attention. Should they occur in injurious numbers at any 

 time, they may be got rid of with the lime-sulphur wash. 



Apple-Tree Borers. 



The Round-Headed Apple-Tree Borer (Saperda Candida), Fig-. 28, 

 is a very serious enemy to young- trees. The parent beetle is a handsome 

 insect of a chocolate brown color with two bands of chalky-white extend- 

 ing from one extremity to the other on the upper surface and with long 

 jointed antennae. The female lays her eggs in an incision which she 

 makes in the bark during the month of June; the young larvae tunnel 

 under the bark and feed upon the sap-wood, living for three years in that 

 condition, and making larger and deeper burrows as they increase in 

 size. Their presence may generally be ascertained by the little heap of 

 sawdust-like castings at the base of the affected tree. Working und^r 



