‘ 
176 INSECTS INJURIOUS TO FOREST AND SHADE TREES. 
fox-colored beetle 0.23 to 0.33 long, bluntly rounded at each end, thinly clothed with 
yellowish hairs, its thorax narrowed anteriorly and with coarsish shallow punctures, 
and aslightly raised line along the middle, at least on the posterior half, a faint black- 
ish line along the middle of the upper part of the head, and its wing-covers rough, 
with rather shallow furrows, in which are coarse indistinct punctures. Appearing 
abroad early in May, numerous in pine forests and in lumber and mill yards. Its larvie 
common under the thick bark of pine logs and stumps; a yellowish white footless 
grub thinly clothed with yellowish hairs, and divided into thirteen segments, its head 
polished and horny, of a tawny yellow color, with the mouth black, and the neck 
having on each side, above, a large polished spot tinged with tawny yellow. (Har- 
ris’s Treatise, page 75. ) 
With this account taken from Harris, our own observations agree. 
The cells are smaller than those of Pissodes strobi. We have found the 
larve and immature beetles in abundance in Brunswick, Maine, in the 
middle of March. The burrows are very irregular, winding about un- 
der the bark, while the very irregular cells are from half an inch to an 
inch long, and nearly a quarter of an inch wide, and surrounded with 
the white woody chips made by the larva before pupating. 
Leconte states that in this species the prothorax is very densely and 
coarsely punctured; the hairs of the elytra not being very long. It 
has been collected in Canada, Georgia, Oregon, and California, as well 
as the pine woods of New England and Northern New York. ‘The speci- 
mens from the Pacific slope are larger, and the punctures of the pro- 
thorax are rather smaller and more dense, but these differences do not 
seem to me worthy of specific distinction. Some specimens from New: 
Hampshire and Canada have the prothorax more sparsely punctured, 
almost as in the next species (D. similis), from which they are only dis- 
tinguished by the shorter hairs of the elytra Length 5.2™™ to 8mm 
(.2 to 3.2 inch). 
42, THE STOUT PINE-BORER. 
Dendroctonus rufipennis Kirby. : / 
Boring irregular galleries under the bark of the pitch pine, somewhat like those of 
Tomicus pini, but much less regular and twice as wide and deep, a reddish brown 
bark-borer. 
This beetle, abundant in the New England States, is not uncommon 
in Colorado. I met with it at Blackhawk and at Manitou. 
It probably bores in the pines and spruces of the Rocky 
Mountains. It is short and stout, reddish brown, the head 
and prothorax smooth and shining, though finely punctured, 
while the wing-covers are coarsely punctured and dull-col- 
Fic. 78.—Den- ored, being.a little darker than the rest of the body. Length 
droctonus 4 of + 
rufipennis. — 0.35 inch. 
From Pack- Leconte states that he has received specimens from Alaska, 
Canada, and Anticosti. It is a common northern species. It is only to 
be distinguished from D. similis, says Leconte, by the declivity of the 
elytra being smoother and more shining, and almost without asperities ; 
and by aslight difference in the punctures of the prothorax, which are of 
