Memoirs on the coleoptera

CERAMBYCID^E 363
wide, bitruncate, with the sides feebly arcuate, becoming rather
fuller behind the middle, the surface strongly granose and much
more coarsely so in the female than in the male. The head is
nearly as in undulatus in both sexes, minutely sculptured and dull
in the male, excepting a narrow shining basal band, extending
forward in a fine line bordering the eyes internally and coarsely
punctate, almost uniformly and more coarsely punctato-rugose
throughout in the female. It is a very clearly circumscribed group,
containing several species and subspecies as follows:
Body more rhombiform, very convex, with the elytra tapering very
rapidly from base to apex, dark red-brown in color throughout;
head well developed, the frontal carinse low and rather ill-defined,
separated by much more than the distance between either and the
supra-antennal carina, the vertex behind the line of the antennae
not carinulate medially; antennae (d 71
) fully one-half as long
as the
body, the third joint distinctly longer than the first, the outer joints
feebly canaliculate on their under surface nearly to the base; pronotum
uniform in sculpture and vestiture, having numerous sharp
transverse granules and short, sparse, inconspicuous and subdecumbent
pale hairs, also a few that are longer and erect; scutellum
less than twice as wide as long, arcuato-truncate at apex; elytra
distinctly wider than the prothorax, slightly more than twice as
long as wide, strongly, closely punctate, the punctures transversely
confluent, the marginal pale and sparsely pubescent line with two
small offsets opposite the offsets of the sutural line but not very well
developed; under surface uniformly and sparsely punctulate,
coarsely pilose; legs long, the femora notably stout, very sparsely
punctate and pilose, scarcely more than attaining the elytral tips
in the male. Length (cf) 17.5 mm.; width 4.9 mm. Florida.
sagittatus Germ.
A Similar to sagittatus but smaller, more slender, the elytra less
strongly tapering, relatively more elongate and with the punctures
more clearly defined and less coalescent; head with the frontal
carinse fine and sharply defined, exactly trisecting the space between
the supra-antennal carinae; antennae more slender and notably
shorter, the third joint longer than the first, the canaliculation of
the outer joints shorter and more apical; vertex with a fine shining
carina extending almost to the base; elytra only slightly wider
than the prothorax; scutellum more than twice as wide as long,
circularly rounded; pronotum with smaller and closer transverse
carinules and with more numerous erect bristling hairs; legs
shorter, the femora much more slender, the posterior not attaining
the elytral tips. Length (cf) 12.0 mm.; width 3.2 mm. Pennsylvania
pubescens Hald.
Body more slender, much less rhombiform, the pale pubescence coarser
and much longer, frequently sprinkled over the entire surface