Nature. Just when you think you have it all figured out, she tosses a curve ball.
All moths fly at night, except when they don't. Katydids are green, except when they are pink (or blue)! And those female tiger swallowtails- are either black or striped, except when you find a rare in-between.
A female Tiger Swallowtail in an unusual "intermediate" color form. In all my years of butterflying, this one was a stand-out to me! Much darker than a normal striped female, she looked black when she closed her wings. This is a combination of the two female color variations.
She just couldn't decide what to wear! The darkness of her coloration was more obvious at a distance, making her a fashionista of the tigresses.
Nature- something new every day!