The Red-Necked Raspberry Cane-Borer. 3 
DISTRIBUTION, FOOD PLANTS, AND EXTENT OF 
INJURY. 
The species is of wide distribution, being found in both warm 
and cool latitudes from Canada and New England westward to 
Minnesota and southward to the Gulf States, covering nearly the 
entire eastern half of the United States. (See fig. 3.) 
This cane-borer does not feed, so far as is known, on any plants 
other than those mentioned, although there are at least three some- 
what doubtful reports of its breeding on rose. It attacks practically 
all varieties of blackberry, raspberry, and dewberry, and when 
numerous is always injurious, whether occurring on wild or culti- 
Fie, 3.—Known distribution of red-necked raspberry cane-borer. 
vated plants. As an instance of damage, in 1892 hundreds of acres 
of blackberries about Hammonton, N. J., were so badly injured by 
this cane-borer that 25 per cent reduction of the crop for 1893 was 
predicted. 
INJURY BY THE BEETLE. 
While injury is due mainly to the larva boring within the canes, 
the adults of the cane-borer also do harm by feeding on the leaves. 
They attack by preference young, bright green foliage, and may 
either notch the leaves or cut small rounded holes in them. Their 
work is irregular, but it is unmistakable, as they feed exclusively 
on the upper surface and leave considerable quantities of excrement 
upon the leaves. In time the attacked leaves wither and die prema- 
