NEW SPECIES OF BARK BEETLES—BLACKMAN 205 
Genus PITYOPHTHORUS Eichhoff 
PITYOPHTHORUS LEIOPHYLLAE, new species 
PLATE 23, FIGURE 37 
Female.—Dark reddish brown; 2.11 mm. long, 2.60 times as long as 
wide; allied to scalptor Blackman, anceps Blackman, etc. of Group I. 
Frons flattened on more than a semicircle extending from eye to eye, 
surface shining, very finely, moderately closely punctured at sides and 
above, polished and impunctate in median line on lower half, with 
fine, moderately long hairs, those at periphery incurved. Eye with 
moderate facets, nearly half divided by a rather wide emargination. 
Antenna (fig. 37) with club oval, 1.2 times as long as wide, almost 
1.6 times as long as funicle, widest through third segment, first two 
segments together less than half total length of club; first suture 
arcuate, partly septate, second more strongly arcuate, partly septate; 
third not septate, very strongly arcuate. 
Pronotum almost exactly as wide as long, widest in posterior fourth; 
posterior outline feebly arcuate, strongly margined, posterior angles 
rounded, sides arcuate on posterior half, distinctly constricted in 
front of middle, very broadly rounded in front, with anterior margin 
distinctly serrate; anterior area moderately strongly asperate, with 
asperities arranged in nearly regular concentric rows; summit mod- 
erately high, near middle, with distinct transverse impression behind 
it; posterior area moderately shining, reticulate, finely, not deeply, 
somewhat roughly punctured ; median line rather narrow, impunctate, 
not elevated; hairs very small and inconspicuous on disk, slightly 
larger on sides. 
Elytra wider than pronotum, about 1.61 times as long as wide; sides 
subparallel on anterior two-thirds, moderately rounded behind; sur- 
face rather weakly shining, reticulate, subglabrous; punctures of mod- 
erate size, in closely crowded, slightly irregular rows, only first striae 
impressed ; interspaces not quite flat, with only a few smaller punctures 
on disk, slightly more numerous on sides; ninth interspace distinctly 
convex. Declivity with sulci of moderate depth, moderately narrow, 
suture rather weakly elevated, with a few faint granules; punctures 
of first and second striae reduced ; second interspace (fundus of sulcus) 
shining, devoid of granules and punctures; lateral elevations rather 
weak, with a few small granules in third interspace; vestiture of 
declivity rather scanty, with hairs very fine, moderately short, and 
suberect. 
The male is unknown. 
Type locality —Chalco, Mexico. 
Host —Pinus leiophylla. 
Type material—Holotype, U.S.N.M. No. 55981. 
