ATTACKING THE BRANCHES. 



27 



FIG. 12. 



terial, in which it undergoes its transformations, appearing 



during the month of July as a large, 



purplish-black beetle (Fig. 12), about an 



inch long, with rough wing-cases. The 



head is hollowed out on the top, the under 



side of the body smooth, and the legs short 



and stout. It conceals itself during the 



day, but is active at night, feeding upon 



the sap which flows from the bark. Since 



the larva feeds chiefly on decaying wood, 



the injury inflicted, if any, can only be 



of a trifling character. 



FIG. 13. 



ATTACKING THE BKANOHES, 

 No. 9. The Woolly-louse of the Apple. 



Schizoneura lanigera (Hausm.). 



This is the same species as the apple-root plant-louse (No. 1), 

 but in this form the insects attack the trunk and limbs of the 

 apple-tree, living in clusters, and secreting over themselves 

 small patches of a cotton-like covering. (See Fig. 13, where 

 the insects are represented magnified.) 

 They are often found about the base 

 of twigs or suckers springing from 

 the trunk, and also about the base of 

 the trunk itself, and around recent 

 wounds in the bark. In autumn they 

 commonly affect the axils of the leaf- 

 stalks (Fig. 13), towards the ends of 

 twigs, and sometimes multiply to such 

 an extent as to cover the whole un- 

 der surface of the limbs and also of 

 the trunk, the tree looking as though 

 whitewashed. They are said to affect most those trees which 



