This is not the actual sound of a bug being killed. That is a much shorter sound. This is the sound that comes when the bug zapper is first plugged in. It's the startup sound. I use it for my text notification. My wife says that it sounds like a fart.
Recording of a spark off one of those bug zapper tennis rackets. Originally recorded for the sound of a static electricity shock. Recorded using a zoom h4n.
Hitting what was either an old lantern or a bug zapper lost in some old woods in various ways (on my palm, knuckle, with a stick, etc) to make different percussion or niche snare noises.