Caperonotus Napp, 1993

Napp, Dilma Solange & Monné, Miguel A., 2008, Synopsis of the genus Caperonotus Napp, 1993 (Coleoptera: Cerambycidae), Zootaxa 1941 (1), pp. 25-30 : 25-26

Caperonotus Napp, 1993

Caperonotus Napp, 1993: 657 ; Monné, 2005: 122 (cat.).

Type species: Orthoschema cardinale Bates, 1870 (original designation).

Redescription. Frons short, transverse, subvertical. Antennal tubercles rounded, not prominent. Genae half as long as the lower eye lobes, acute at apex. Eyes finely granulate, emarginate; lower lobes moderately large. Mandibles slender, not angulate, acute at apex. Ventral surface of head, excluding the gula, entirely plicate. Antennae 11-segmented, exceeding the elytral apex by four to five segments in males and by one segment in females. Scape cylindrical, without basal impression; segments from 3 cylindrical, conspicuously carinate and sulcate on four sides; apical third of segment 3 and at length of 4 to 11 with a well developed poriferous system divided by carina; segments 3 to 5 with short, inner apical spines.

Prothorax slightly wider than long, without lateral tubercles, slight and gradually expanded backwards from apex, widest at posterior third. Pronotum plane, transversely plicate. Intercoxal process of prosternum broad, about half to two thirds as wide as one procoxa. Procoxal cavities feebly angulate, almost closed at sides, open behind. Mesosternal process as wide as one mesocoxa, subparallel at sides and emarginate at apex. Mesocoxal cavities opened to epimera.

Elytra slightly and gradually expanded from base to apical third, then rounded attenuate to apices which are feebly emarginate.

Legs short. Femora subclavate, rounded at apex; metafemora, at most, reaching elytral apex. Tibiae cylindrical, not carinate. Tarsi short. First segment of metatarsi shorter than the following two combined.

Remarks. Caperonotus differs from the other genera of Compsocerini Thomson, 1864 by the following characters combined: 1) prothorax and elytra gradually expanded backwards; 2) antennae with poriferous system; 3) femora subclavate; metafemora, at most, reaching the elytral apex; 4) intercoxal process of prosternum and mesosternum wide, the former truncate at apex, the second emarginate; 4) procoxal cavities almost closed at sides; 5) frons short, subvertical; 6) tibiae not carinate. According to Napp (1993: 663, fig. 33 and 667, fig. 54) the females of C. cardinalis and C. superbus have very elongated ovipositor with symbiont-containing pouches opening into the ovipositor.