Butterfly Orange-Tip - Anthocaris midea - 13-cent 1977 issue U.S. stamp.
Bureau of Engraving and Printing. Designed by Stanley Galli.
U.S. Postal Service; National Postal Museum: <a rel="nofollow" class="external text" href="http://arago.si.edu/category_2039149.html">Butterfly Issue</a>