In the insect world, where males outnumber females, the males are often brightly colored to attract the attention and win the good graces of the females.
昆蟲界雄性常因各有勢力範圍，或數量多於雌性，為了吸引雌性「投懷送抱」，只好「男」為悅己者容，這也是雄蝶往往比雌蝶漂亮的原因。