One of the more annoying things about living in Florida is that we have closely related animals that are nearly identical, but they don't have glow-butts. (At least not down in the bottom half of the state.)
I'll wait for someone from like Lakeland to say they have them.
I traveled around Central Florida quite a bit as a kid, I've never seen the Midwest style fireflies. I have seen a glowy luminescent bug in Florida though, it was like a glow stick green and had a constant light rather than a flash. Super weird looking.