A worldwide community photographing and learning about wildlife
Hesperia leonardus
Skipper Butterfly; golden brown with light markings.
State Park in SW Pennsylvania
Great Shot,
It could be a Indian Skipper Hesperia sassacus, but can't be sure. It was the closest match. You can got to http://www.butterfliesandmoths.org/ signup and submit the photo for ID. Then they will contact you when they get an ID.
After you signed in go to Get Involved and drop down to Submit a Sighting. They may be quick unless it's a tough one.