giant swallowtail returns

[Dan Chaffee]

>Since they are found in Chicago and there are some individuals who find
>them in Canada and actually in early spring it is evident that P.
>cresphontes is definitely not only a tropical species.
 
Not only that, I have seen no evidence correlating their numbers
during summers following severe winters to those following mild
ones  here in western Missouri. I't's usually as common as P.
turnus around my yard and seems to thrive just fine in the
absence of citrus trees.
 
D Chaffee