Acalolepta

Subfamily

Lamiinae

Diagnosis - adult

Body length: 6–40mm.
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 reaching/surpassing end of body, antennal flagellar segments elongateelongate:
much longer than wide
, scapescape:
the first proximal segment of the antenna
cicatrixcicatrix:
a scar; a scar-like structure
(scar) 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 acute spinespine:
a protuberance with an acute (sharp) distal end
.
Prosternum: prosternal process dilated at apexapex:
end of any structure distad to the base
, procoxal cavities closed posteriorly, rarely 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
, emarginateemarginate:
notched at the margin
or with tooth or spinespine:
a protuberance with an acute (sharp) distal end
, elytral color black, brown, yellow or orange, elytral color pattern present or absent.
Legs: visible tarsomeres: 4, femora slender, protibial spurs: 2, tarsal claws simple.

Similar genera

Potemnemus, Thermonotus

Differential diagnosis

The silky appearance given by fine elytral setaeseta:
a sclerotized hair-like projection of the cuticle
, truly 4-segmented tarsitarsus:
the leg segment distal to the apex of the tibia, bearing the pretarsus; consists of one to five tarsomeres (including pretarsus)
resulting from fusion of tarsomeres 4+5, bent protibiae, and a spine-free elytral surface will distinguish Acalolepta. Thermonotus has a posteromedial tubercletubercle:
a small knoblike or rounded protuberance
on the pronotumpronotum:
the upper and dorsal part of the prothorax
. Subgenus “Dihammus is characterized by a preapical tooth on the internal side of the male protibia, while Acalolepta s. str. shows a simple furrow” (Vitali 2018e).

Distribution

Palearctic: Asia, Indomalaya, Australasia

Recorded host plants

Abies, Picea, Larix, Pinus; Taxus; broadleaf

Remarks

239 species in subgenus Acalolepta; Dihammus: 17 spp.; Pilohammus: 2 spp.; Plicatodihammus: 1 sp. Conifers: A. (A.) fraudator, A. (A.) sejuncta.

Synonyms

Cypriola Thomson, 1864Thomson, 1864:
Thomson, J. 1864-65. Systema cerambycidarum ou exposeacute; de tous les genres compris dans la famille des ceacute;lrambycides et familles limitrophes. H. Dessain, Lieacute;ge, 578 pp. [1864: pp. 1-352; 1865: 353-578; Also published in Meacute;moires de la Socieacute;teacute; Royale des Sciences de Lieacute;ge 19 [1866]:1-578]., Mémoires de la Société Royale des Sciences de Liège 19: 16

Neanthes Pascoe, 1878, The Annals and Magazine of Natural History, London 2 (5) 11: 372

Haplohammus Bates, 1884, The Journal of the Linnean Society of London. Zoology 18: 239

Niphohammus Matsushita, 1932, Insecta Matsumurana, Sapporo 6 (4): 170 [for Dihammus]

Taxonomy

Subgenus Acalolepta Pascoe, 1858, Transactions of the Entomological Society of London (2) 4 (6–7): 247

Subgenus Dihammus Thomson, 1864Thomson, 1864:
Thomson, J. 1864-65. Systema cerambycidarum ou exposeacute; de tous les genres compris dans la famille des ceacute;lrambycides et familles limitrophes. H. Dessain, Lieacute;ge, 578 pp. [1864: pp. 1-352; 1865: 353-578; Also published in Meacute;moires de la Socieacute;teacute; Royale des Sciences de Lieacute;ge 19 [1866]:1-578]., Mémoires de la Société Royale des Sciences de Liège 19: 80