This 80-seniti stamp from Niuafoʻou (Tonga) depicts the striking Blue Moon butterfly, Hypolimnas bolina, known for its iridescent blue-white spots on velvety dark brown wings. The butterfly is widespread across the Pacific and Southeast Asia, admired for its beauty and ecological significance. The background features soft floral artwork, enhancing the vivid coloration of the species. Issued as part of a series celebrating regional fauna, this stamp is a favorite among collectors of butterfly and thematic wildlife issues.