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Photo#23915
Two-tailed Swallowtail - Papilio multicaudata - Papilio multicaudata - male
Copyright © 2005 Scott Nelson

Two-tailed Swallowtail - Papilio multicaudata - Papilio multicaudata - Male
Centennial, Arapahoe County, Colorado, USA
July 1, 2005
Warming in the early morning sun on a cherry tree, Prunus, a host plant for the larva.

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Two-tailed Swallowtail - Papilio multicaudata - Papilio multicaudata - male Two-tailed Swallowtail - Papilio multicaudata - Papilio multicaudata - male
Contributed by Scott Nelson on 11 July, 2005 - 8:03pm
Last updated 2 October, 2008 - 9:16pm

Female maybe?
The blue in the marginal dark bands makes it look female to me. The abdomen does look slender (often a male trait), but the parts necessary to be sure don't show.

These things are so beautiful. Always a favorite of mine.
… David J. Ferguson, 2 October, 2008 - 9:20pm

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