This sound is piece of night atmosphere i recorded years ago with reel-to-reel nagra4 and mkh416. You can hear night ambience of large hangar with lot of silent insects flying directly to electronic trap light and burn in very close detail. Another detail sound comes from hiting the metal body of film light.
Insects at midnight recorded in a remote rural area on a sony himd minidisc recorded using a rode nt-4 stereo microphone covered with a rycote windscreen.