Several days ago I spotted a butterfly that I had never seen before. I checked in my copy of Kaufman Butterflies of North America and it appears to have been a male Gulf Fritillaria. Do you have any other reports of this butterfly in this area? It is stunning orange above with large white blotches underneath.
Anne Arundel County Maryland
The Maryland Biodiversity website is a good place to check. Do you have a photo?
There are about 10 hits when you begin to put 'frittilaria' in the search box.
Here is the page on Gulf Frittilary, and you can compare to the others: https://www.marylandbiodiversity.com/viewSpecies.php?species=543
It notes that it is found in a few counties here occasionally as vagrants from the south.
You can see by the map that Anne Arundel is not one of them.