Two of two dozen Giant Swallowtail larva feasted  
on the new growth of an old grapefruit tree that 
was kicked out of my  house for the summer.
From the number of leaves consumed, I am sure  they
matured and are now pupae somewhere in the  backyard.
I brought home a third caterpillar a week  ago
to be fed prickly-ash leaves.  Resulting pupa is on  Flickr:   

http://www.flickr.com/photos/25681757@N00/8001540186/    

Dave Hoag, Grand Isle