Transparent 6-line Blue Nacaduba kurava

The name tells you everything: this delicate butterfly has wings so translucent they're nearly see-through, and six distinctive pale lines that stripe the wing surfaces with elegant precision. First formally described in 1857 by entomologist Frederic Moore, it's found across a vast range spanning Asia and Australia. The transparency of the wings is genuinely unusual among butterflies and makes spotting them in flight a magical moment—it's like watching a living stained-glass window flutter past.