Northeast Gardening: Adult Butterfly in February from Elephant Ear Bulbs?, 1 by TracyLore

TracyLore wrote:
It is day 21 and our butterfly is still alive! He's on me flapping his wings really fast. I read the life expectancy of a Swallowtail adult is 14 days.

The little guy is tattered now, he got caught in one of our cob webs and I found him hanging upside down and flapping away. As of Saturday he looks like this (see photo). I managed to undo the sticky web that "tied" his back legs together.

How do you tell the sex of a butterfly?