6 MISC. PUBLICATION 417, U.-S. DEPT. OF AGRICULTURE 
Hylurgus scabripennis Zimmermann, 1868, Amer. Ent. Soc. Trans. 2: 149; Leconte, 
in Zimmermann, 1868, Amer. Ent. Soc. Trans. 2: 149 (as synonym of Hylastes 
porculus Er.). 
Hylastes scabripennis (Zimm.) Leconte, 1876, Amer. Phil. Soc. Proc. 15: 389 (as 
synonym of porculus Er.) ; Hichhoff and Schwarz, 1896, U. S. Natl. Mus. Proc. 
18: 606, 607 (as synonym of salebrosus Hichh.) ; Blandford, 1898, Ent. News 
Oot 
Female.—Dark reddish brown, about 4.6 mm. long, about 2.51 times as long as 
wide. 
Frons rather broad between the eyes, frontal rectangle * about 1.05 times as long 
as wide; epistomal margin darker in color, liplike; epistomal lobe hroad, rather 
short, the end broadly emarginate, broadly impressed or excavate in middle line; 
epistoma light reddish brown, rather deeply and widely impressed at each side 
of the sharply elevated median carina, which extends from the epistomal margin 
to the moderately developed, arcuate, transverse impression; surface subopaque 
below, feebly shining above, moderately punctate and strongly granulate below, 
more coarsely punctate above, with the granules coarser and partly replaced by 
rugae; hairs fine, short, and inconspicuous, coarser and longer on epistoma. Eye 
moderately granulate, short ovate, about 2.0 times as long as wide, widest above, 
inner margin entire. Antenna with first segment of club subequal in length to the 
others united. 
Pronotum about 1.04 times as long as wide, widest slightly behind middle, 
posterior outline nearly straight, posterior angles rounded, sides strongly arcuate 
for three-fourths of their length, then slightly constricted to meet the rather 
broadly rounded front margin; surface subopaque to moderately shining, with 
punctures moderately coarse, rather shallow, and not close on disk, closer and 
smaller on anterior fourth ; median line impunctate, weakly elevated on posterior 
two-thirds; disk subglabrous, with very short, fine hairs at sides and behind. 
Elytra slightly wider than pronotum (63:54), about 1.6 times as long as wide, 
widest near base with sides nearly straight and subparallel (slightly tapering) 
on anterior two-thirds, arcuately narrowed on posterior third, moderately nar- 
rowly rounded behind; surface moderately shining; striae distinctly impressed, 
the first two more strongly so, the punctures moderately coarse, separated by 
Slightly less than their own diameters; interspaces slightly wider, strongly con- 
vex, more strongly so behind, strongly rugose-asperate, with a few small punc- 
tures, the rugae seldom bridging the striae except near base; disk appearing sub- 
glabrous, ‘but with a few short, very fine hairs, coarser, longer, and somewhat 
more conspicuous on sides and declivity. 
Anterior face of mesosternum precipitous, not protuberant; first abdominal 
sternite subequal to succeeding three combined, with fifth slightly shorter, ascend- 
ing posteriorly, surface convex, nearly semicircularly rounded behind. 
Male.—Similar to female; pronotum almost exactly as wide as long, nearly as 
wide as elytra, with sides strongly arcuate, slightly more closely punctured ; 
elytra more strongly sculptured; last abdominal sternite more broadly rounded 
behind, ventral surface slightly flattened and very feebly broadly impressed in 
median line, with hairs larger than at sides and directed posterolaterally from 
middle. 
Remarks.—The foregoing descriptions were prepared largely from 
two cotypes, a male and a female, donated by Eichhoff and now in the 
United States National Museum. In addition the writer has studied 
about a hundred specimens of salebrosus. Most of these originated 
in Virginia, North Carolina, and South Carolina, but a few came 
from Georgia, Florida, and Texas. A number of the specimens were 
taken at sawmills, where they had been attracted to freshly sawn 
lumber, but a few were cbtained in their burrows in longleaf pine, 
shortleaf pine, loblolly pine, and in spruce. 
2The width of the frontal rectangle is the distance between the inner margins of the 
eyes. Its length is the distance between a line connecting the upper margins of the eyes 
and a line parallel to it and touching the tips of the epistomal lobe. 
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