Poliaenus

Subfamily

Lamiinae

Diagnosis - adult

Body length: 6–11 mm.
Eyes: eye interommatidial setaeseta:
a sclerotized hair-like projection of the cuticle
absent, eye deeply emarginateemarginate:
notched at the margin
> half width, eye ommatidial density coarse.
AntennaeAntenna:
in larval and adult insects, paired segmented appendages, borne one on each side of the head, functioning as sense organs and bearing a large number of sensilla
: antennal length reaching/surpassing end of body, antennal flagellar segments elongateelongate:
much longer than wide
, scapescape:
the first proximal segment of the antenna
smooth/punctate at apexapex:
end of any structure distad to the base
, antennal segment 3 > scapescape:
the first proximal segment of the antenna
.
Pronotumpronotum:
the upper and dorsal part of the prothorax
: pronotumpronotum:
the upper and dorsal part of the prothorax
shape transversetransverse:
broader than long
or subquadratesubquadrate:
 not quite a square
, pronotumpronotum:
the upper and dorsal part of the prothorax
lateral armature blunt tubercule.
Prosternum: prosternal process dilated at apexapex:
end of any structure distad to the base
, procoxal cavities closed posteriorly.
ElytraElytron:
the leathery forewing of beetles, serving as a covering for the hind wings, commonly meeting opposite elytron in a straight line down the middle of the dorsum in repose
: elytral length reaching or close to end of abdomen, elytral apicesapex:
end of any structure distad to the base
rounded or truncatetruncate:
cut off squarely at the tip
, elytral color pattern present.
Legs: visible tarsomerestarsomere:
subdivision or article of the tarsus, usually numbering from two to five
: 4, femora clavateclavate:
thickening gradually toward the tip
, protibial spurs: 2, tarsal clawstarsal claw:
usually paired claws of the pretarsus, at the distal end of the leg
simple.

Body moderately elongateelongate:
much longer than wide
, subcylindrical, clothed with short, dense appressed pubescence, intermixed with long flying hairs. Head broad, longitudinally sulcate between the antennae; eyes deeply emarginateemarginate:
notched at the margin
, lower lobelobe:
a rounded projection or protuberence
subquadrate; antennaeantenna:
in larval and adult insects, paired segmented appendages, borne one on each side of the head, functioning as sense organs and bearing a large number of sensilla
usually only slightly longer than the body in the female, distinctly so in the male, usually clothed with long flying hairs, scapescape:
the first proximal segment of the antenna
elongateelongate:
much longer than wide
, slender, fourth segment not incurved, shorter than third, remaining segments shorter, diminishing in length toward apexapex:
end of any structure distad to the base
. Pronotumpronotum:
the upper and dorsal part of the prothorax
armed with both lateral and discal tubercles, the latter sometimes feeble; anterior coxal cavities rounded, narrowly angulate externally, intermediate coxal cavities closed externally. ElytraElytron:
the leathery forewing of beetles, serving as a covering for the hind wings, commonly meeting opposite elytron in a straight line down the middle of the dorsum in repose
elongateelongate:
much longer than wide
, each with a subbasal crested tubercletubercle:
a small knoblike or rounded protuberance
ante-median area transversely depressed; apicesapex:
end of any structure distad to the base
rounded or feebly truncatetruncate:
cut off squarely at the tip
, rarely obliquely truncatetruncate:
cut off squarely at the tip
. Legs short; femora clavateclavate:
thickening gradually toward the tip
; intermediate tibiaetibia:
the leg segment distal to the femur, proximal to the tarsus
with an external sinus; tarsal segments often clothed beneath with a short, dense yellow pile (Linsley and Chemsak 1984Linsley and Chemsak 1984:
Linsley EG and Chemsak JA. 1984. The Cerambycidae of North America. Part VII, No. 1. Taxonomy and Classification of the Subfamily Lamiinae, Tribes Parmenini Through Acanthoderini. University of California Press, Berkeley and Los Angeles. 258 pp.).

Similar genera

Pogonocherus

Distribution

western Nearctic south to Honduras

Recorded host plants

broadleaf; Abies, Pseudotsuga taxifolia, Pinus; Acer, Rhus, Quercus, Fremontia californica

Remarks

11 species. Extremely variable within species or host population.

Taxonomy

Poliaenus Bates, 1880