Luminosa Papilio Radiatus, meaning 'radiant light butterfly,' is a bioluminescent lepidopteran with translucent wings up to 10 cm, featuring dark veins, subtle striations, scalloped margins, and elongated hindwing tails aiding rhythmic gliding flight. Its slender body (0-2 g) thrives in humid tropical rainforest understory microclimates. Bioluminescence emits soft blue-green light (470-530 nm) near basal wing areas via photoprotein-rich scales, likely for mate attraction or predation deterrence. Classified within the rare Phosphorescent Morphidae cluster of ten species, it occupies a niche at 20-30°C and is ecologically sensitive. Its gliding complements bioluminescent signaling, highlighting evolutionary and ecological research value.