Last time we had a rather technical discussion about the biology and chemical mechanics of fireflies. I appreciate all of the comments, and some of them indicated that I should expound a bit.
Most of the comments were concerned with firefly ecology and how to encourage their numbers. It is true that fireflies seem to be on the decrease insofar as populations go, and there are several reasons for that.
One reason that I am pretty much sure DOES NOT deplete the population is live capture, with or without release. I have a call in to Sigma-Aldrich to see if they still buy fireflies. If so, they are supplying lots of material for research whilst doing little harm to the population.
It is HARD to catch enough fireflies to damage the population! As I get more information about the bounty, if any, on members of the Photinus genus, I shall share.