A worldwide community photographing and learning about wildlife
Photinus pyralus
Mostly black wings. Yellow carapace with red and black markings at center. About 1/2 inch long.
Backyard.
Really nice job on the photo and the spot - they like to hide under leaves in trees during the day, so getting a clear shot with plenty of light can be difficult!
Whew! I knew that one without looking it up - did a logo based on fireflies while I was at school. What's funny is I double-checked my Audubon Field Guide, and was going to provide it as my source, but you can't provide a book as a reference. It has no URL!
:D