They don't seem to fly, at least I have not seen one fly.
I am sorry for the poor quality of the photos. I had to zoom in quite a lot and these little bastards are moving furiously fast as if they were afraid of the light. Now they seem to have vanished I don't know where as I can't catch one anymore.
It is the first time I see them. Yesterday I repotted a few houseplants. First I repotted a pothos that my boyfriend had left in a pot without any drainage hole. It was hard to take it off and the soil felt weird but I did not pay attention that much. Then I propagate a marginata, a schefflera and a spider plant to give my friend who does not have any plants and is settling in a new house. I might have taken a bit of the soil from the pothos that I incorporated with new potting mix. And it is this afternoon, as I was checking the plants, that I saw the little insects under the marginata. I have not seen them under the other plant, but I am a bit worried that it might disseminate around...
I checked on your thread Alyssa but I am not sure if that is what I got I will recheck later on
