There are a surprising number of butterflies this year at Cape Hedge Beach. Several days ago an American Lady was warming on the popples and today, a female Black Swallowtail.
An easy way to see the difference between an American Lady Butterfly and a Painted Lady Butterfly
American Lady (Vanessa virginiensis) ~ Note the two large eyespots on the underside of the hindwing, close to the outer margin.The Painted Lady (Vanessa cardui) has four smaller eyespots on the underside of the hindwing.
Painted Lady, left; American Lady right