140 INSECT PESTS OF BERRIES AND GRAPES 



berries are attacked by this elongated, flattened, bronze-colored 

 beetle (Agrilus ruficollis Fab.). It is about one-third of an inch 

 long. The eggs are deposited near the ground in the axil of the 

 leaf stalk. The young grub eats into the cane at this point and 

 causes the formation of the raspberry gouty gall (Fig. 158). As 

 the gall enlarges, the surface becomes rough and cracks. The 

 larvae tunnel along in the sap wood in an irregular course. When 

 mature, the insect is pale yellow or whitish, with a very small 

 brownish head and black jaws. It is about five-eighths of an inch 

 long. Several larvae may be found hi a single cane. They pupate 

 in the pith; and emerge as adult beetles in early summer. 



FIQ. 158. Red-necked cane-borer, adult, larva or grub, and gall. (After Riley.) 



Control. Galls thus formed should be cut out and burned dur- 

 ing the whiter, late fall, or early spring, while the larvae are hiber- 

 nating. All wild canes in the neighborhood should be destroyed 

 and clean cultivation practiced as far as possible. Infested canes in 

 the berry patch should be cut out and destroyed before summer. 



The Snowy Tree-cricket. This tree-cricket (CEcanthus niveus 

 DeG.) is of a delicate greenish white color, lighter than the allied 

 form 0. fasciatus, from which it is also distinguished by marks 

 on the basal joint of the antennae (Fig. 159). It is quite musical 

 and may even be heard occasionally within houses, where it acci- 

 dentally occurs. 



