Insect and Fungous Enemies of the Grape. 39 
There is only one generation of the insect each year, larve maturing 
by fall and mostly pupating and developing to the beetle stage, in 
which condition the winter is passed. 
CONTROL. 
The grape cane-borer is best kept in check by giving attention to 
the destruction in and around vineyards of dying trees, prunings, and 
the like, which are necessary for the development of the young. 
After the canes are bored into nothing can be done to correct the 
damage. It may be practical in some cases to destroy the beetles 
in their burrows by use of a curved wire. During warm days the 
adults are likely 
to be out of their 
burrows and can 
often be gathered 
by hand and de- 
stroyed. 
THE GRAPE CANE 
GALL-MAKER.” 
A small, reddish 
brown weevil, the 
grape cane gall- 
maker, sometimes 
punctures with her 
snout the shoots of the grape, usually just above one of the 
lower joints; in this puncture an egg is placed and several addi- 
tional punctures may be made above the first, but in these 
no eggs are deposited. The larva upon hatching feeds in the 
pith, burrowing up and down the shoot. When full grown the pupa 
stage is entered in the burrow, the beetle emerging in midsummer. 
As the shoot grows it becomes enlarged at the punctured place, re- 
sulting in a gall-like swelling about twice the diameter of the cane 
in thickness and one or two inches in length. The injured canes 
continue to grow and, unless broken by winds, little harm results. 
No practical methods of preventing injury by this insect have been 
developed and ordinarily its attack is of very little importance. 
Fie. 40.—Grape cane-borer. Considerably enlarged. 
THE GRAPE CANE-GIRDLER.™ 
The grape cane-girdler is a very near relative of the preceding 
species and has about the same life history. The egg-laying activi- 
ties of the female practically girdle the shoots, which soon drop 
(fig. 41). The egg is deposited mostly at the joint next below where 
the shoot has been cut off. Cutting off and destroying the shoot a 
few inches below this joint will result in the destruction of the grub 
feeding on the pith within the shoot. 
23 Ampeloglypter sesostris Lee. 4 Ampeloglypter ater Lec. 
