Zebra swallowtail Eurytides marcellus Location: Great Falls of the Potomac National Park, billy-goat trail, near Potomac, MD Year: 2004 Merckslides catalogue number: 04-21452 Comments:

Zebra swallowtail Eurytides marcellus Location: Washington Monument State Park near Boonesboro, MD Year: 2004 Merckslides catalogue number: 04-19419 Comments:

Zebra swallowtail Eurytides marcellus Location: Brownie's Beach, near Chesapeake Beach, MD Year: 2010 Merckdigitals catalogue number: 04-74271 Comments:

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