in all the years I've raised caterpillars! I've released many same species, opposite sex butterflies from the same cage on the same day, but they've never mated in the cage -

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Several pipevine swallowtails emerged today, I released one, and these two were getting it on when I got back home from the store.

I've noticed that the male is always on the bottom and the female on top, which I don't understand, since it seems like the transfer of fluid would be better done with the female on the bottom. I guess they know better than I do, though! :)

Sherry