chrysalis color

[Nick Grishin]

> anyone else noticed this correlation?  I would like to know if Black
> Swallowtail cats that attach to brown sticks always become a brown chrysalis
> and if cats that attach to living vegetation always become green.

No, not always. Brown pupas are much more likely to diapause, however.
There is nice correlation here. It is the same for many other
swallowtail species. Nick