THE GENUS DENDROCTONUS. 153 
In some sections of the country this beetle appears to be attracted 
to the trunks of felled trees much more than in others, depending 
probabl} r on the species of tree and local conditions relating espe- 
cially to the presence or absence of certain other insects which would 
or would not interfere with the development of their broods. 
BASIS OF INFORMATION. 
Information in regard to this beetle is based on investigations by 
the writer in West Virginia, at Romney, July, 1891; at Dellslow, 
March and November, 1891; at Crow, April, 1893; in Randolph 
County, in spruce forest, May, 1893; at Kanawha Station, July, 1903; 
in North Carolina, at Fletchers, July and November, 1902; at Tryon, 
July, .1902, March, 1903, and October, 1903; at Boardman, Novem- 
ber, 1904; at Lumber, S. C, March, 1903; at Kirbyville, Tex., 
November, 1902; on Long Island, New York, September, 1903; at 
Roosevelt, W. Va., and Virginia Beach, Va., June, November, and 
December, 1907; on investigations by Mr. W. F. Fiske in North 
Carolina, at Tryon, March, April, May, and November, 1903, Novem- 
ber, 1904, and March, May, and July, 1905; at Pisgah Ridge Moun- 
tain, September, 1904; at Pink Beds, September, 1904, and May, 
1905; at Biltmore, May, 1905; at Cornelia, Ga., November, 1903; at 
Thomasville, Ga., March, 1905; at New Landing, S. C, August, 1903; 
at Chicora, S. C, November, 1904; at Call, Tex., February, 1905, 
and at Deweyville, Tex., March, 1905. Additional localities through 
correspondence and from other collections are : New Brunswick and 
Lakewood, N. J.; Islip, Long Island, New York; Calhoun, Ala.; Tark- 
ington and Austin, Tex.; Tampa, Fla., and Marion County, Fla.; Glen 
Allen and Fort Monroe, Va. Represented in the forest-insect collection 
of this Bureau by over 400 specimens, including all stages and work. 
BIBLIOGRAPHY. 
(Refers to D. terebrans proper and not to D. valens Lee, which was often confused 
with it.) 
Le Baron, 1871; Packard, 1890, p. 721; Hopkins, 18936, p. 143; Hopkins, 1893c, 
p. 213; Hopkins, 1894a, pp. 71-76; Hopkins, 1897a, p. 41; Hopkins, 1899a, pp. 
302-393, 415, 421, 447; Smith, 1899, p. 364; Hopkins, 19026, p. 10; Hopkins, 1906c, 
p. 81; Hopkins, 1909, pp. 147-150. 
No. 23. THE RED TURPENTINE BEETLE. 
(Dendroctonus valens Lec. a Figs. 97-102.) 
The red turpentine beetle is a large, stout, light to dark red, cylin- 
drical barkbeetle, 5.7 to 9 mm. in length, with head broad, convex/lack- 
ing grooves or longitudinal impressions; the pronotum broad, coarsely 
a Referred to under Dendroctonus terebrans in earlier literature. 
