REVISION OF THE GENUS PHLOEOSINUS—BLACKMAN 453 
moderately finely, very deeply, closely punctured on disk, punctures 
finer and closer in front, subgranulate-punctate on sides; median 
line variably, usually weakly elevated, punctured; lateral calli small 
or absent; pubescence short, fairly abundant but not conspicuous. 
Elytra wider than pronotum, about 1.25 times as long as wide, 
widest behind middle; sides nearly straight on anterior two-thirds, 
moderately broadly rounded behind; surface shining; striae on disk 
very narrow, rather strongly impressed, punctures fine and obscure, 
striae notably wider on sides; interspaces very wide, flat, densely and 
strongly granulate (more finely than in canadensis Swaine), with a 
few coarser asperities, irregular on anterior disk, but becoming 
uniseriate posteriorly. Declivity (pl. 41, fig. 24) with first and third 
interspaces strongly convex, with moderately large to large (vari- 
able) serrations; second interspace weakly convex, about as wide as 
others, shining, punctate, serrations lacking except for one to three 
small granules near apex; fifth, sixth, seventh, eighth, and ninth 
interspaces each with several small serrations or moderately large 
granules; all interspaces with smal!, more or less thickened hairs, 
first and third with erect setae from base of each serration. Anterior 
face of mesosternum rather steeply oblique. 
Female.—Similar to male in habitus; frons wider between eyes 
than in male, frontal rectangle about 0.66 as long as wide, convex, 
with median two-thirds flattened, feebly, transversely impressed, 
closely granulate-punctate throughout, with a fine, elevated median 
carina on lower half; elytral declivity with all interspaces nearly 
equally wide and convex and all rather weakly serrate, first and 
third only slightly more strongly convex and serrations only slightly 
larger than on second. 
Two cotypes of Phloeosinus graniger (Wichhoff), received many 
years ago from Eichhoff and declared by Eichhoff and Schwarz (1896) 
to be identical with P. dentatus (Say), were used, together with other 
specimens, in the preparation of the description of the male. In like 
manner, a cotype of P. haagii (Eichhoft), a female, was used together 
with other specimens in preparing the description of the female. 
Phloeosinus enixus Blackman, described from Mississippi in 1921, 
represents a variation of P. dentatus (Say) and should also be placed 
in the synonymy. 
Phloeosinus dentatus is more widely distributed than any other 
American species of the genus. It occurs from New Hampshire to 
Georgia and westward to Texas and Nebraska. Practically every 
State within that area is represented in the collection of about 600 
specimens. The most common host is Juniperus virginiana L., but it 
is not uncommon in Chamaecyparis thyoides (.) B. S. and P. and 
Thuja occidentalis L. 
