Yes, the answer is butterfly wings.
http://indrus.in/articles/2012/01/08/but...14118.html
There are more pics in that link by the same artist.
Quote:Zaritsky has pioneered the art form of using butterfly wings instead of paint. Although some African masters have used butterfly wings in their art, no one has yet matched the Russian artist’s pinpoint precision.
"A butterfly lives for just a few weeks, while my pictures give people a chance to admire it for many years," Zaritsky said, speaking about his art.
In some ways, Zaritsky has been preparing for this creative pursuit his entire life; he began collecting butterflies as a child.
"Butterfly collectors know that some wings are considered – collectors call it trash," Zaritsky said. "If the wings are damaged, if they have partially faded, specialists would usually put them aside. It’s a shame to throw them away but you cannot use them either. In time, the bits may become infested with pests and you have to throw everything away anyway."
http://indrus.in/articles/2012/01/08/but...14118.html
There are more pics in that link by the same artist.