214 PROCEEDINGS OF THE NATIONAL MUSEUM 
PITYOPHTHORUS AUCTOR, new species 
min. long, 2.61 times as long as wide; allied to caelator Blackman, but 
slightly stouter. 
Frons shining, flattened on a semicircle extending from eye to eye, 
margined at the sides, very finely, moderately closely punctured at 
sides and above, with very fine, moderately long hairs, median area 
below shining, impunctate or nearly so, with a broad, rather low 
median carina. Eye rather short, with moderate facets, half divided 
by a wide, deep emargination. Antenna with club nearly one-half 
longer than funicle, very broad oval, widest through third segment, 
first suture weakly arcuate, second and third progressively more 
strongly arcuate; first suture strongly septate, second weakly septate, 
third not septate. 
Pronotum about 1.03 times as long as wide, widest at base, posterior 
margin weakly arcuate, angles scarcely rounded; sides weakly, ar- 
cuately convergent from base to constriction, moderately rounded in 
front, the anterior margin with eight rather low serrations (lower 
than in caelator) ; anterior area with moderate asperities, in irregular, 
concentric rows; summit rather high, with a distinct, broad, transverse 
impression posterior to it; posterior area feebly shining to subopaque, 
surface reticulate, with moderately coarse, deep punctures; median line 
rather wide, smooth, impunctate; vestiture of fine, short, inconspicuous 
hairs on disk, those on sides slightly larger. 
Elytra slightly wider than pronotum and 1.66 times as long, 1.64 
times as long as wide; sides straight and subparallel on anterior two- 
thirds, moderately rounded behind (not so broadly as in caelator) ; 
surface feebly shining, reticulate, subglabrous, strial punctures moder- 
ate (slightly larger than in caelator), in nearly regular rows, only first 
striae impressed ; interspaces slightly rugose, punctures nearly lacking 
except near declivity and near base. Declivity moderately sloping; 
sulci shallow, of moderate width; suture moderately elevated, with 
fine granules; punctures of first and second striae obsolescent; lateral 
elevations rather low, no higher than suture, with a row of small, 
distinct granules in third interspace; vestiture sparse and inconspicu- 
ous; entire declivity not so brightly shining as in caelator. 
Male.—Similar in size and proportions; frons strongly transversely 
impressed below, with a strongly elevated median carina, extended to 
form a toothlike structure above epistomal margin; pronotal and 
elytral structure similar to that of female. 
Type locality.—Near Perote, Veracruz, Mexico. 
Additional locality —Limon, Puebla, Mexico. 
Host.—Pinus teocote. 
Additional host—Pinus cembroides. 
Female.—Dark reddish brown, 2.14-2.40 mm. long; holotype 2.40 | 
