-an extent that the crop fails to 
THE RED-NECKED RASPBERRY CANE-BORER.' 
By F. H. CHIrrENDEN, 
Entomologist in Charge, Truck-Crop Insect Investigations, Bureau of Ento- 
mology. 
CONTENTS. 
Page. Page 
Injurious work of the borer___-___ a: | Injury bythe beetie=— _.. #22 ose 3 
Description of the insect-_________ 1 | Seasonal history and habits_______ 4 
Distribution, food plants, and extent Naural» (Cnemies <2 5_ = ~aek Se eee 5 
OMMMIULY soe oS or Remedy Se aies a Sas | ae ee 5 
INJURIOUS WORK OF THE BORER. 
HE young canes of raspberry, blackberry, and dewberry are sub- 
ject to injury by the larva, or young, of a small, short-horned 
beetle, known as the red-necked raspberry cane-borer, or raspberry 
gouty-gall beetle. This larva, or 
borer, forms irregular swellings, or 
galls, from 1 to 3 inches in length, 
consisting of gradual enlargements 
of the canes and splitting of the 
bark. The canes so infested either 
die or become weakened to such 
develop. 
DESCRIPTION OF THE 
INSECT. 
THE BEETLE. 
. Fig. 1.—Red-necked raspberry cane-borer ; 
From all related insects the bee- a, Beetle; b, larva, ventral view ; c, pupa. 
tle, which produces this borer, can — Magnified about 6 times. 
be readily distinguished by its beautiful coppery-red or golden 
thorax (“neck”), which has given it its name. It is of moderate 
size, averaging a little more than one-fourth of an inch (5.5 to 7 milli- 
1 Agrilus ruficollis Fab.; order Coleoptera, family Buprestidae, 
3608°—22 
