Named after Sir Hans Sloane, whose private collection helped found the British Museum, this species of moth was endemic in Jamaica until the last reported sighting around 1895. Its neon green, red, and blue coloration was achieved by refracting light off of ribbon-like scales, a warning to predators of its toxicity. The diurnal species lived a migratory existence, known for suddenly vanishing from areas it had previously called home. Scientists speculate that this behavior was a response to plants gradually releasing chemicals to ward off being eaten by caterpillars, accounting for an abnormal death rate observed in wild larvae broods. Sloane's urania may have succumbed to habitat loss after Jamaica's lowland rainforests were cleared and converted to agricultural land, hindering its nomadic movements.