436 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
taining the bead, La a large square yellowish horny ana, ■aeoeeded by rongh oval 
areas on the i »> jm of i In- succeeding segments. These rasps serve as legs, which are 
wanting in I he grub. 
The beetle is called the spurred 8aperda (caicarata) from the spine-like ends of the 
wing-COVers. The body is covered all over with a (short and close nap, which gives it 
Fig 
— Saperda caicarata. 
Smith del. 
Fig. 161.— Popla brorer. Saperda 
caicarata: a, natural size; 6 
upper and c under side of head 
and first thoracic segment en- 
larged. — From Packard. 
a fine blue-gray color; it is finely punctured with brown, with four ocher yellow 
lines on the head aud three on the top of the thorax ; the scutel is also ocher-yellow, 
and there are several irregular lines and spots of the same color on the wing-covers; 
it is 1± inch in length. (Harris.) 
2. The lesser poplar borer. 
Saperda masta Leconte. 
Boring in the poplar and balm of Gilead, selecting the smaller branches, in many 
places not more than an inch or two apart, and situated chiefly at the base of the 
buds, the whole length of the excavation not much exceeding an inch ; pupating 
early in May and becoming beetles by the end of May. (See a full account of the 
larva aud its habits in Canadian Entomologist, vi, 1K74, p. 61.; 
The larva. — Nearly cylindrical, tapering a little posteriorly, aud about half an 
inch in length. Head very small, dark reddish brown in front, pale behind. Body 
deep yellow. Secoud segment deeper in color and more horny than the other seg- 
ments ; terminal segment a little more hairy than the others. (Saunders.) 
3. The poplar girdler. 
Saperda concolor Leconte. 
Girdling the truuks of sapling poplars, by carrying a mine around the trunk, which 
causes a swelling often nearly twice the diameter of the tree. 
Our attention was first directed to this borer aud the marked effects 
of its work by Mr. George Hunt. In bis company we have fouud 
numerous saplings of the common poplar in the woods about Provi- 
