ii6 



THE APPLE LEAF HOPPER 



the back ; on the sides yellowish and black stripes. General color 

 bluish. It spins its cocoon on trees or in crevices of bark or fences, on 

 withered leaves, etc. 



Fig. (U. Egg mass, «,- eggs, f/ and f,- moth, 6,- Forest Tent Oaterpiller. ^ 



Remedies: Cutting off and destroying egg masses in late fall. 

 Spraying the foliage in spring ^clien caterpillars appear, with arsenicals, 

 notably arsenate of lead, three pounds in. fifty gallons of water, zvhich 

 will not hum the leaves. Banding of trees to prevent ascent of cater- 

 pillars. 



WILLOW SAW FLIES, WILLOW SLUGS. 





Figs. 62 and 63. Cimbex americana: larvne, focoon and adult. Natural size. 



The foliage of our willows is sometimes more or less injured by 

 Saw fly larvae, or "false caterpillars" which eat the leaves. Even the 

 laurel-leaved willow, which, happily, is not so much subject to insect 

 attack as some other varieties, is not exempt. 



