REVISION OF THE GENUS PHLOEOSINUS—BLACKMAN 465 
the Lake States. The host trees are 7. occidentalis, Juniperus vir- 
giniana L., and Chamaecyparis thyotdes (L.) B.S. and P. 
PHLOEOSINUS SCOPULORUM Swaine 
Phloeosinus scopulorum Swatnn, Can. Ent., vol. 56, p. 148, 1924——W. J. CHam- 
BERLIN, Bark and timber beetles of North America, p. 179, 1939. 
Male—Black, with elytra reddish brown to piceous brown; 2.4-2.8 
mm. long, about 2.04 times as long as wide; allied to canadensis. 
Frons wide between eyes, frontal rectangle about 0.66 as long as 
wide, epistomal lobe short; surface black, shining, moderately finely, 
closely granulate-punctate at sides and below, punctate above in 
median area, with interstices smooth; broadly, arcuately, transversely 
impressed, with medium portion deeper (subconcave), with a distinct, 
moderately elevated median carina on lower half; hairs short and 
fine. Eye about three times as long as wide, about half divided by a 
U-shaped emargination. Antenna about twice as long as wide, all 
of the sutures oblique. 
Pronotum about 1.17 times as wide as long, widest near posterior 
angles; sides arcuate on posterior two-thirds, rather strongly con- 
stricted just behind broadly rounded anterior margin; surface 
piceous black, shining; punctures of disk deep, moderately close, of 
medium size, finer and denser in front, close and subgranulate at 
sides; median line slightly elevated and impunctate from base to 
transverse impression; lateral calli large; vestiture of fine, short hairs 
on disk, slightly longer on sides. 
Elytra wider than pronotum, about 1.30 times as long as wide, 
widest through basal serrations; sides subparallel on basal two-thirds, 
moderately broadly rounded behind; surface shining; striae im- 
pressed, narrow, punctures moderately fine, usually distinct; striae 
wider and punctures larger on sides; interspaces on disk feebly con- 
vex, confusedly granulate on anterior half, becoming uniseriate on 
first and third interspaces behind, obsolescent on second and fourth 
behind; lateral interspaces scarcely granulate, feebly so behind, hairs 
rather short and fine, moderately sparse. | Declivity with first and 
third interspaces elevated, each with a row of moderately large black 
serrations; first interspace finely, closely punctured on mesal half; 
second interspace flat, not narrowed, with rather fine, moderately 
close, obsolescent punctures, devoid of serrations; lateral interspaces 
of declivity with a few small, sharp granules; vestiture with longer 
slender hairs fro mserrations and more numerous shorter ones. An- 
terior face of mesosternum rather precipitous. 
Female—Similar to male ,frons wider between eyes, frontal rec- 
tangle about 0.64 as long as wide, convex, closely, finely granulate- 
punctate at sides and below, punctured above, very faintly impressed 
