About Entimus imperialis (Forster J.R, 1771)
Entimus imperialis, commonly known as the diamond beetle, reaches an adult length of approximately 16 to 30 millimetres, or 0.63 to 1.18 inches. Its basic body colour is black. The elytra are strongly convex, laterally compressed, and marked with longitudinal rows of punctures that hold golden-green dots. These dots are filled with scales made of chitin crystals that look like small diamonds, which is how the species got its common name. This species is known for its iridescent scales, which change colour when viewed from different angles. The iridescence comes from the presence of three-dimensional photonic crystals in the scales. This trait is thought to function as camouflage, and to help with recognition between males and females. Diamond beetles of this species are used in women's jewelry. This species is endemic to and can only be found in southwest Brazil.
