Elongate-ovate, moderate-sized, ranging from about 14–18 mm in length. Integument generally dark brown with whitish and ochraceous pubescence. Head with frons elongate, about as wide as width of 1 1/2 lower eye lobes. Eyes with lower lobes ovate. Genae elongate, about as tall to distinctly taller than lower eye lobes. Antennal tubercles prominent, moderately to narrowly separated; tubercles not armed at apex. Antennae about as long or 1 1/3 times as long as overall body length; scape clavate, about as long or longer than antennomere IV; antennomere III sinuate, longer than scape and antennomere IV. Pronotum transverse, roughly conical, distinctly wider at base, without lateral tubercles. Elytra with sides strongly attenuate; elytral apices individually rounded; elytra generally uniform in coloration or speckled; base of elytra with two large, prominent tubercles at humeri; each tubercle rounded, about the size of one lower lobe of eye. Basal 1/3 of elytra with dense punctation, surface granulate-punctate. Procoxae simple, without projection (females). Mesosternal process with apex deeply emarginate. Metafemora moderate in length, about 1/3 as long as elytra.
The combination of the following characters will help to distinguish this genus: conical pronotum without lateral tubercles; base of elytra with two large, prominent tubercles at humeri; and elytra with sides strongly attenuate.
Superficially resembles Agaritha, some species of Hypsioma, and Typhlocerus.
South America (Brazil)
Unknown
Unknown
The genus Cnemosioma currently contains one species: C. innominata Martins, 1975Martins, 1975:
Martins UR. 1975. Notas e descricoes em Onciderini (Coleoptera, Cerambycidae). Papeis Avulsos de Zoologia. 29(10):65–70..
More species images are available in the Gallery.
This species is rare in collections.
Cnemosioma Martins, 1975Martins, 1975:
Martins UR. 1975. Notas e descricoes em Onciderini (Coleoptera, Cerambycidae). Papeis Avulsos de Zoologia. 29(10):65–70.
subtribe: Onciderina
type species: Cnemosioma innominata Martins, 1975Martins, 1975:
Martins UR. 1975. Notas e descricoes em Onciderini (Coleoptera, Cerambycidae). Papeis Avulsos de Zoologia. 29(10):65–70.
Bezark and Monné (2013)Bezark and Monné (2013):
Bezark LG, Monné MA. 2013. Checklist of the Oxypeltidae, Vesperidae, Disteniidae and Cerambycidae, (Coleoptera) of the Western Hemisphere., Martins (1975)Martins (1975):
Martins UR. 1975. Notas e descricoes em Onciderini (Coleoptera, Cerambycidae). Papeis Avulsos de Zoologia. 29(10):65–70., Monné (2005)Monné (2005):
Monné MA. 2005. Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae. Zootaxa. 1023:1–759.
