To kick off the school year, here are Illinois' common "punctuation" butterflies—the Question Mark, Comma, and Gray Comma. These butterflies have distinctive silver marks on the underside of their hindwings. Look for a crescent and dot on the Question Mark, a c-shaped mark on the Comma, and an L-shaped mark on the Gray Comma.
Learn more about butterflies with,"Butterflies of Illinois: A Field Guide." https://shop.inrs.illinois.edu/inhs-man.html