Caterpillars are reddish-orange, with white stripes that run the length of your body and black spines.
Look for Painted Lady butterflies in Pennsylvania in open up parts which are silent and undisturbed, like https://matteolmek999110.blog2freedom.com/29052573/the-best-side-of-gold-3-row-bead-ball-shaped-hoop-earrings