Luminosa Lepida, named for its bright and elegant appearance, is a bioluminescent butterfly found in tropical cave systems. It features translucent wings with delicate venation and iridescent patches reflecting pale blue light within a 420-490 nm spectrum. The butterfly’s broad, rounded forewings and scalloped hindwings measure about 8 cm in height, with slender antennae and a body under 2 grams. Bioluminescence is concentrated along wing edges and terminal legs, emitting a blue-green glow for communication or predator deterrence in low-light caves. It exhibits a graceful fluttering flight adapted to stable 10-20°C subterranean habitats. Taxonomically, it belongs to the Phosphorescent Morphidae, a group of ~50 light-emitting species. Its adaptations illustrate evolutionary responses to dark, humid cave microclimates, enhancing understanding of bioluminescence in Lepidoptera.