Semanotus

Subfamily

Cerambycinae

Diagnosis - adult

Body length: 7-18 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 fine. 
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 reaches between basebase:
the part of any appendage or structure that is nearest the body
and end of 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
or 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 scapescape:
the first proximal segment of the antenna
≥ segment 3. 
Pronotumpronotum:
the upper and dorsal part of the prothorax
: pronotumpronotum:
the upper and dorsal part of the prothorax
shape transversetransverse:
broader than long
, pronotumpronotum:
the upper and dorsal part of the prothorax
lateral armature absent. 
Prosternum: prosternal process dilated at apexapex:
end of any structure distad to the base
or not dilated at apexapex:
end of any structure distad to the base
, procoxal cavities open 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 metallic, elytral color pattern present or absent. 
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 broad, flattened. striatestriate:
marked with parallel, fine, longitudinal, impressed lines or furrows
1-segmented and shorter than body in both sexes, second segment about as long as broad, outer segments flattened, expanded. Pronotumpronotum:
the upper and dorsal part of the prothorax
a little wider than long, constricted and tubular at basebase:
the part of any appendage or structure that is nearest the body
, sides rounded, surface coarsely, deeply punctured with strong dorsal calluses; intercoxal process of prosternum broad, expanded behind coxae; mesonotum with a large, undivided, finely striatestriate:
marked with parallel, fine, longitudinal, impressed lines or furrows
stridulatory surface; mesosternummesosternum:
sternum of the mesothorax
broad, subtruncatesubtruncate:
not quite cut off squarely at the tip
behind. Femora feebly clavateclavate:
thickening gradually toward the tip
; first segment of posterior tarsitarsus:
the leg segment distal to the apex of the tibia, bearing the pretarsus; consists of one to five tarsomeres (including pretarsus)
slender, more than twice as long as broad (Linsley 1964Linsley 1964:
Linsley EG. 1964. The Cerambycidae of North America. Part V. Taxonomy and Classification of the Subfamily Cerambycinae, Tribes Callichromini Through Ancylocerini. University of California Publications in Entomology, Vol. 22. 197 pp.).

Similar genera

Callidiellum, Elatotrypes, Ropalopus

Differential diagnosis

The apical antennomeresantennomere:
a subunit of the antenna, including the scape, pedicel, and flagellomeres
flattened will distinguish from other Callidiini. The shorter second antennal segment, slightly clavateclavate:
thickening gradually toward the tip
femora, and deeply punctured pronotumpronotum:
the upper and dorsal part of the prothorax
with strong callosities will distinguish from Callidiellum. Ropalopus often lacks the extensive smooth calli on the pronotumpronotum:
the upper and dorsal part of the prothorax
and has a transversetransverse:
broader than long
scutellumscutellum:
a small sclerite located directly posterior to the pronotum, bordered laterally by the elytra
while that of Semanotus is more triangular.

Distribution

Nearctic south to Honduras; Palearctic; S. japonicus introduced in British Columbia.

Recorded host plants

New World: most genera of Cupressaceae; Pinaceae

Old World: most genera of Cupressaceae; Pinaceae; Taxaceae

Remarks

20 species. Five of them in New World. They predominantly feed in the cambium just under bark.

Synonyms

Sympiezocera Lucas, 1851

Xenodorum Marseul, 1856

Hylotrupes LeConte, 1873 (ex parte)

Anocomis Casey, 1912

Anacomis Leng, 1920 (error)

Hemicallidium Casey, 1912

Taxonomy

Semanotus Mulsant, 1839