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I found this forum via a Google search. My observation may seem completely crazy, but I thought I'd share this here to see if anyone has similar observations, opinions, etc.
In my apartment, I have several plants, and of course a few fungus gnats that dart about. Mostly, they like to track down moisture (the sink, bathroom, my face).
I usually let them alone, except one recently that met its end at the outside of my shower stall (I swatted it, out of irritation).
Since that time, almost every single day, at that very same spot/vicinity, there is a dead fungus gnat. There wasn't before (I'm a clean freak, I would notice it).
I can't help but draw some kind of parallel between the death of one fly and the rest of these going there to meet their doom.
That it's not coincidence would suggest a different type of functioning in these little critters, which in and of itself sounds bizarre.
Anyone care to comment... or make fun of me :-)
If the one you swatted was a female, it is possible you may have "marked" the spot with a pheromone which could be attracting males. If they land there while there is a lot of condensation, they could get stuck to the surface and die there.
Or you might be imagining it ...
Actually, that makes a lot of sense to me now. Thank you.
I did think I was going a little crazy, but ... thank you. Ha ha.
It seems to have stopped, ironically, shortly after my post. But I won't venture to guess they're reading my Internet correspondence and conspiring to drive me crazy again in the near future. hahaha ;-)
I think one of my tropical plants brought them in... I don't know a "safe" way to get rid of them. I don't like the idea of using pesticides in my house, etc..