Semanotus Mulsant, 1839

James Hammond, H. E. & Williams, Daryl J., 2013, Casey’s conundrum, a review of the genus Semanotus Mulsant (Coleoptera: Cerambycidae: Cerambycinae: Callidiini) in North America, Zootaxa 3670 (2), pp. 101-136 : 115

Semanotus Mulsant, 1839

Semanotus Mulsant, 1839: 54 Sympiezocera Lucas, 1853 : cvi Xenodorum Marseul, 1856: 48 Hylotrupes LeConte, 1873: 296 Anocomis Casey, 1912: 271

Hemicallidium Casey, 1912: 273 Anacomis Leng, 1920: 275

Diagnosis. Members of this genus can be separated from other genera of the Callidiini by the following combination of characters: body moderately broad, convex to slightly flattened; antennae 11-segmented and varying from reaching about the middle of the elytra to surpassing elytral apex; antennomeres 3–10 apically widened with antennomeres 6–11 moderately flattened in cross section; pronotum usually wider than long, narrowed to pedunculate at base, laterally rounded to angulate, disk with dorsal callosities that are separated into 3 to 5 more or less distinct calli or fused in various configurations; prosternal process wide and expanded behind procoxae; femora slightly clavate; tarsal claws simple; apex of aedeagus divided into a flat plate-like dorsal lobe that is apically rounded and ventral lobe that is pointed to slightly aciculate; tegmen bilobed.

Hosts. Juniperus spp. (junipers), Sequoia spp. (redwoods), Libocedrus sp. (incense-cedar), Pseudotsuga sp. (Douglas-fir), Cupressus spp. (cypress), Thuja spp. (cedar), Picea spp. (spruces), Pinus spp. (pines), Abies spp. (firs).

Flower and Associated Vegetation Records. Chaemaecyparis sp. (cedar)

Distribution. Transcontinental in North America , from Alaska south to Texas; southern Mexico southeast through Guatemala and Honduras; in the Palaearctic from Algeria and Morocco, throughout Asia including the middle east, China, Japan, and Nepal, from most of continental Europe and the Scandinavian countries.

Remarks. This diverse genus is superficially similar to many genera within the Callidiini including Xylocrius , Hylotrupes , Callidium , Ropalopus , and Pyrrhidium in that they share a similar habitus and have a pronotum that is variously sculptured. They differ from these species in that the front coxae are divided by a narrow prosternal process, tarsal claws are simple, the femora only slightly clavate and apical antennomeres dorso-ventrally flattened.