chrysalis adaptive coloration

[Andria & James Wood]

In article <evoluhol-1808981822000001 at pm3188.spectra.net>,
evoluhol at magnum.wpe.com wrote:

>As ova and very young larva polyxenes and glaucus are nearly identical.
>
>As they
>matured as caterpillars if each segment was a repeat design of the one
>next to it with its black, green, yellow, orange, then they were
>polyxenes.  

Right on the nose, Dave.  We were unable to locate comparison
illustrations for both species as caterpillars and thus were left with the
somewhat more confusing task of distinguishing the emergent butterfly. 
Your description, though, pretty much wraps up the species question.  

>As for the green pupa with yellow vs. the brown bark like pupa:
>     When I have grown troilus (spice bush), and polyxenes (black
>swallowtail) in every case the pupa that are green will emerge the same
>summer (resembling leaves and stems) and the ones that are bark like will
>overwinter.

Actually, the two that were bark-like in color have emerged and I released
them this morning (beautiful, btw!).  The greenish chrysalis still "hangs
on" and will probably not emerge for some time (as it was about a week
behind the others in its formation).

Thanks very much for your help.

-- 
    Andria & James Wood
     Birmingham, AL  USA
archilochus at mindspring.com