Sphedanolestes impressicollis is a species of insect belonging to the family Cerambycidae, commonly known as longhorn beetles. It is characterized by its impressive size and striking coloration. The adults can reach lengths of up to 5 centimeters and have a metallic green or blue body with black markings. This species is primarily found in tropical rainforests, where it feeds on decaying wood and plays an important role in nutrient recycling.