fringe
specialized border of elongated scales along the outer edge of a butterfly's wing, often serving as an identifying characteristic and subject to wear over the insect's lifetime
en-GB/ˈfɹɪnd͡ʒ/
en-US/ˈfɹɪnd͡ʒ/
specialized border of elongated scales along the outer edge of a butterfly's wing, often serving as an identifying characteristic and subject to wear over the insect's lifetime