This bill proposes to designate the black swallowtail butterfly (Papilio polyxenes) as the official butterfly of the state of Michigan. The legislation aims to recognize this species for its significance and beauty, thereby promoting awareness and appreciation for Michigan's natural heritage.

The bill includes a provision stating that it will take effect 90 days after being enacted into law. This timeline allows for a smooth transition into the new designation, ensuring that the black swallowtail butterfly is officially recognized in a timely manner.