ATTACKING THE BRANCHES. 



243 



FIG. 250. 



tender stems of the grape, causing them to wilt and turn 

 brown. While this tree-hopper is occasionally found on the 

 vine, it is much more common on the red-bud, Cerds ; but 

 its favorite home is on the wafer-ash, Ptelea trifoliata. 



No. 130. The Bed-shouldered Sinoxylon. 



Sinoxylon basilare (Say). 



The larva of this insect (Fig. 250, a) bores into the stems 

 of grape-vines, and sometimes also into the branches and 

 trunks of apple and peach 

 trees. It is a yellowish, 

 wrinkled grub, about three- 

 tenths of an inch long, with 

 the anterior segments swol- 

 len, the head small, and 

 the body arched or bent. 



The pupa (Fig. 250, b) 

 is of a pale-yellowish color, 

 and is formed in the chambers mined by the larva. 



The beetle is shown in the figure at c. It is about one-fifth 

 of an inch long, black, with a large reddish spot at the base 

 of each wing-cover. The thorax is punctated and armed 

 with short spines in front; the wing-covers are roughened 

 with dots, and appear as if cut off obliquely behind, the outer 

 edge of the cut portion being furnished with three teeth on 

 each side. 



The only method suggested for destroying this insect is to 

 burn the wood infested by it. 



No. 131. The Grape-vine Wound-gall. 



Vitis vulnus Riley. 



This curious gall, which is represented in Fig. 251, is pro- 

 duced by the Sesostris snout-beetle, Ampeloglypter Sesostris 

 (Lee.). The beetle (Fig. 252) is about one-eighth of an inch 

 long, of a reddish-brown color, with a stout beak half as 

 long as its body. The thorax is punctated, and the wing- 



