Megaderus stigma

Megaderus stigma is a species of long-horned beetle in the family Cerambycidae. It is found in Nicaragua, Costa Rica, Panama, Trinidad & Tobago, Colombia, Venezuela, Guyana, Suriname, French Guiana, Brazil, Peru, Bolivia, Paraguay, Argentina and Uruguay.
This species was described by Linnaeus. He described it as: Cerambyx sub-short, roundish, coarsely punctate, body dark, elytra smooth: with white macula. Habitat in America. Rolander. Totally black. thorax hemispherical, sub-margined, abundantly coarsely punctate, posteriorly excavated close to lateral tooth. Scutellum smooth, longer in the other species. Elytra smooth, black, on each side of scutellum with white line outward oblique.