SUPPLEMENTARY LIST. 189 



ohould go to nourish and mature it. It is a small leaf-hopper 

 (shown in Fig. 202), about one-fifth of an inch long, 

 of a dark-brown or black color, with a sulphur- Fig. 202. 

 yellow spot like a saddle upon Mie middle of its back, W^ 

 and in front of this a baud of pale yellow,— the head M 

 and under side being of the same color. It is un- 

 likely that this insect will ever occur in sufficient numbers to 

 cause much injury. 



SUPPLEMENTAEY LIST OF INJUKIOUS INSECTS WHICH 

 AFFECT THE PLUM. 



ATTACKING THE ROOTS. 



The peach-tree borer, No. 97, sometimes invades the plum- 

 tree, and burrows about tiie collar and into the larger roots 

 adjacent without causing an exudation of gum, as in the 

 peach. Young trees are most liable to injury. 



ATTACKING THE TRUNK. 



The flat-headed apple-tree borer. No. 3, frequently attacks 

 the plum and materially injures the tree. 



ATTACKING THE LIMBS AND BRANCHES. 



The parallel Elaphidion, No. 12; the pear-blight beetle, 

 No. 68 ; the New York weevil. No. 100 ; and the tree- 

 cricket. No. 178. 



ATTACKING THE LEAVES. 



The apple-tree tent-caterpillar. No. 20; the forest tent- 

 caterpillar. No. 21 ; the white-marked tussock-moth. No. 22; 

 the canker-worms, Nos. 25 and 26 ; the fall web-worm, No. 

 27 ; the Cecroi)ia emperor moth, No. 28 ; the unicorn promi- 

 nent, No. 29; the blind-eyed sphinx, No. 31; the oblique- 

 banded leaf-roller. No. 35 ; the leaf-cru rapier, No. 37 ; the 

 eye-spotted bud-moth. No. 38 ; the tarnished plant-bug, No. 



