>>I also had a clue by knowing that what makes lightning bugs light up is luciferin.<<

And that lucifer is another word for match, as in the World War I army song:

'Pack up your troubles in your old kit bag
and smile, boys, smile.
What's the use of worrying?
It never was worthwhile
As long as you've a lucifer to light your fag,
Smile boys that's the style.'

Or something like that, anyway. (Jackie and other North Americans, please don't be misled by the British use of the word fag!)

...or now I know how to write markup (thanks Jackie!) maybe I should embellish that

'Pack up your troubles in your old kit bag
and smile , boys, smile .
What's the use of worrying ?
It never was worthwhile
As long as you've a lucifer to light your fag,
Smile boys that's the style.'