Elongate-oblong, moderate-sized, ranging from about 13–18 mm in length. Integument generally ferrugineous with whitish, ferrugineous, and ochraceous pubescence. Head with frons subquadrate, about as wide as width of 2 1/2 lower eye lobes. Eyes with lower lobes oblong, slightly narrowed. Genae elongate, distinctly shorter than lower eye lobes. Antennal tubercles prominent, moderately separated; tubercles not armed at apex (females) or armed with a small projection, or with a short, blunt horn (males). Antennae about as long as overall body length (females), or as much as 1 1/2 times as long (males); scape clavate, about as long or longer than antennomere IV; antennomere III sinuate, longer than scape and antennomere IV; antennae annulate. Pronotum transverse, roughly cylindrical to conical, wider at base, with lateral tubercles. Elytra with sides roughly parallel to attenuate; elytral apices individually rounded; elytra generally uniform in coloration or speckled; base of elytra with two prominent tubercles at humeri. Basal 1/3 of elytra with dense punctation, surface granulate-punctate. Procoxae without projection (females) or with small acute projection or distinct, curved hook (males). Mesosternal process with apex deeply emarginate. Metafemora moderate to short in length, about 1/3–1/4 as long as elytra.
The combination of the following characters will help to distinguish this genus: slightly narrow eyes; sinuate antennomere III; base of elytra with two prominent tubercles at humeri; base of elytra with dense punctation, surface granulate-punctate; distinctly speckled elytra.
Superficially resembles Hesychotypa and Ischiocentra.
South America (Brazil)
Unknown
Unknown
The genus Esonius currently contains one species: E. panopus Dillon and Dillon, 1945Dillon and Dillon, 1945:
Dillon LS, Dillon ES. 1945. The tribe Onciderini (Coleoptera: Cerambycidae) Part I. Reading, Scientific Publications, Reading Public Museum and Art Gallery, Number 5. 186 pp..
Esonius Dillon and Dillon, 1945Dillon and Dillon, 1945:
Dillon LS, Dillon ES. 1945. The tribe Onciderini (Coleoptera: Cerambycidae) Part I. Reading, Scientific Publications, Reading Public Museum and Art Gallery, Number 5. 186 pp.
subtribe: Onciderina
type species: Esonius panopus Dillon and Dillon, 1945Dillon and Dillon, 1945:
Dillon LS, Dillon ES. 1945. The tribe Onciderini (Coleoptera: Cerambycidae) Part I. Reading, Scientific Publications, Reading Public Museum and Art Gallery, Number 5. 186 pp.
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., Dillon and Dillon (1945)Dillon and Dillon (1945):
Dillon LS, Dillon ES. 1945. The tribe Onciderini (Coleoptera: Cerambycidae) Part I. Reading, Scientific Publications, Reading Public Museum and Art Gallery, Number 5. 186 pp., Monné (2005)Monné (2005):
Monné MA. 2005. Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae. Zootaxa. 1023:1–759.
