New Backyard Visitor

Had a new butterfly visit this year, a Zebra Swallowtail.  I saw it one time and haven't seen it again.  They generally hang out more towards the Missouri River I think.  Their host plant is the Paw Paw tree and I've seen them there before.  I was really suprised to see this one stop by.

It's not a really great picture as it wouldn't let me get very close.