Hi Bugman, I’m hoping you can ID this chrysalis which several docents found on the grounds of the Arizona Sonora Desert Museum in Tucson, on 9/19/08. It was hanging on a Totem Pole Cactus. We’re thinking it may be that of a Queen butterfly, which are common at the Museum this time of year.
We believe you are correct with the Queen Chrysalis identification. If this is not the Queen, Danaus gilippus, it is another member of the genus which includes the Monarch.