Zebra Swallowtail — ‘ventral’ view

The undersides of the hind wings have a red line that's missing on the upper sides.
(Unrelated: Why is “undersides” a legitimate word, but “uppersides” is not?)

This one was in our garden rather than at the lake.
Apparently this butterfly is not found in the western U.S.; see a range map.

Species pages: [ BAMONA ] [ BugGuide ]

Hmm. Looks like I will have to submit this to BugGuide; there is no record there of observations of this species in Illinois in June… » my submission (including a dorsal view)

[ IMG_6455e90ccwS9x675Atm :: 250mm ]

[Danette Thompson]

Beautiful shot of his undersides!

[Kerri Michaels]

beautiful fav

[Jane Anderson]

Always exciting to see something rare!