Do You Say: Lightning Bug or Firefly? (Poll)

Here's a debate that can keep the conversation going for hours over drinks...

Are they Fireflies or Lightning Bugs? According to Mental Floss it is a region thing and the majority of Illinois says "Lightning Bug." There is a large portion of the states that uses both, approx. 40% of us.

West coast people are "Firefly" people while Florida people call them "them there flying light up snacks."

So what do you call them: