>I was looking at the Western Swallowtail tonight and it seems like a match for sure. Not to belabor the point, but it's not a western swallowtail. Those have a very narrow black band close to, and parallel to the thorax, and then yellow, like the eastern swallowtail. The anise swallowtail, which is what you have, and also native to western North America, has a thick black band on the leading edge of the wing, extending from the thorax to almost halfway along the wing. That black band can be considered diagnostic. Bob (I only know this because my late wife loved butterflies and moths; after she died I donated over 1,000 items from her collection to the Denver Museum of Nature and Science.) _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/… Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net>