Male butterflies are often attracted to females by the release of a powerful chemical called 'pheromone' from special glands. Some Butterflies lay their eggs on the underside of specific plants, others lay them in mid-flight. Some Butterflies, like the Cabbage White Butterfly, lay their eggs on cabbage leaves - the eggs and the caterpillars that emerge presently are velvety green and blend in well with the cabbage leaves.
http://animalbreed-factstrivia.blogspot.co.at/2010/11/about-butterfly.html/
Melanargia Galathea, Demi-Deuil, Marbled White
Melanargia Galathea, Demi-Deuil, Marbled White