Firefly.org | Firefly & Lightning Bug Facts, Pictures, Information About Firefly Insect Disappearance
I remember catching fireflies in Wisconsin and Illinois in the 60s. I do not remember any of these in Arizona nor in Nevada.
Jean P., one of the girls next door in Menomonee Falls, WI I had caught fireflies with actually turned up in Denver when I was at the University of Denver Graduate School of Librarianship and Information Management in 1983-1984. She had moved there after a divorce and wanted to be a librarian so we got together (not as much as I wanted though) once in a while around Denver.
She eventually returned to Wisconsin, got a MA in Librarianship, worked in a MA library, and married a lawyer.
Not on my Facebook page yet though.