Elongate-ovate, robust, moderate-sized, ranging from about 12–19 mm in length. Integument generally dark brown or black with gray, ferrugineous, and ochraceous pubescence. Head with frons elongate, about as wide as width of one lower eye lobe. Eyes with lower lobes large, oblong. Genae elongate, distinctly shorter than lower eye lobes. Antennal tubercles prominent, moderately to narrowly separated; tubercles armed at apex with a small projection, or with a short, blunt horn. Antennae about as long as overall body length, or as much as twice as long; scape clavate, about as long or shorter than antennomere IV; antennomere III sinuate, longer than scape and antennomere IV; antennomere XI shorter than X (females) or longer than X (males). Pronotum transverse, roughly cylindrical to conical, wider at base, without lateral tubercles. Elytra with sides 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 finely punctate to granulate-punctate. Procoxae without projection or with small acute projection. Mesosternal process with apex deeply emarginate. Metafemora long to moderate in length, about 1/2–1/3 as long as elytra.
The combination of the following characters will help to distinguish this genus: large eyes; sinuate antennomere III; roughly cylindrical to slightly conical pronotum; base of elytra with two prominent tubercles at humeri; and elytra with sides attenuate.
Strongly resembles Hypsioma.
South America (Brazil, Ecuador, Peru)
Unknown
Unknown
The genus Marensis currently contains one species: M. simplex (Bates, 1865Bates, 1865:
Bates HW. 1865. Contributions to an insect fauna of the Amazon Valley. Coleoptera: Longicornes. The Annals and Magazine of Natural History 3(15):213–225, 382–394; 3(16):101–113, 167–182, 308–314.).
More species images are available in the Gallery.
Marensis 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: Marensis tybalmoides 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. [synonym of Hypselomus simplex Bates, 1865]
Bates (1865)Bates (1865):
Bates HW. 1865. Contributions to an insect fauna of the Amazon Valley. Coleoptera: Longicornes. The Annals and Magazine of Natural History 3(15):213–225, 382–394; 3(16):101–113, 167–182, 308–314., 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.
