Ultimate union of the masculine and the feminine
One butterfly in 10,000 is born a gynandromorph—half male, half female. Often times you wouldn’t know it because the two sexes look alike, but sometimes there’s no mistaking it.
\Photo courtesy of: Burkhard Hinnersmann, CC BY-SA 3.0 https://commons.wikimedia.org/wiki/File:ZwitterHauhechelblaeuling.jpg