Batyle

Subfamily

Cerambycinae

Diagnosis - adult

Body length: 9–13 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 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
, 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
, rarely 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 black or reddish, elytral color pattern present or absent.
Legs: visible tarsomerestarsomere:
subdivision or article of the tarsus, usually numbering from two to five
: 4, femora slender, protibial spurs: 2, tarsal clawstarsal claw:
usually paired claws of the pretarsus, at the distal end of the leg
simple.

Form subcyclindrical. Head with front large; protuberantprotuberant:
rising or produced above the surface or general level
;1-segmented, feebly appendiculateappendiculate:
bearing appendages
; eyes finely faceted; mandibles coarsely punctatepunctate:
set with fine, impressed points or punctures appearing as pin-pricks
at basebase:
the part of any appendage or structure that is nearest the body
, apexapex:
end of any structure distad to the base
obliquely truncate-emarginate, chisel-shaped; antennal tubercles not prominent. Pronotumpronotum:
the upper and dorsal part of the prothorax
with sides rounded, unarmed, apical margin elevated; prosternum impressed and densely punctatepunctate:
set with fine, impressed points or punctures appearing as pin-pricks
in male, intercoxal process arcuatearcuate:
arched or bow-like
behind, not protuberantprotuberant:
rising or produced above the surface or general level
; mesosternummesosternum:
sternum of the mesothorax
declivous in front; episterna of metathorax moderately broad. 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
parallel-sided; apicesapex:
end of any structure distad to the base
unarmed. Legs slender; femora unarmed; 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)
elongateelongate:
much longer than wide
 (Linsley 1962Linsley 1962:
Linsley EG. 1962. The Cerambycidae of North America. Part III. Taxonomy and Classification of the Subfamily Cerambycinae, Tribes Opsimini Through Megaderini. University of California Publications in Entomology, Vol. 20. 188 pp.).

Similar genera

Pronocera

Differential diagnosis

Pronocera has more sparse erect setaeseta:
a sclerotized hair-like projection of the cuticle
on the 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
and the procoxal cavities rounded externally. 

Distribution

Nearctic region to southern Mexico

Recorded host plants

Pinus spp.; Carya, Castanea, Quercus

Remarks

Five species and 8 additional sspp. B. ignicollis known from conifers. Larvae in branches and twigs.

Synonyms

Batyleoma Casey, 1912

Taxonomy

Batyle Thomson, 1864Thomson, 1864:
Thomson J. 1864–65. Systema cerambycidarum ou exposé de tous les genres compris dans la famille des célrambycides et familles limitrophes. H. Dessain, Liége, 578 pp. [1864: pp. 1–352; 1865: 353–578; Also published in Mémoires de la Société Royale des Sciences de Liége 19 [1866]: 1–578].