I have these extra large pupa in one of my cultures, does it have any significance?
Just yours when there are so many you inhale them and they fly into your food and drinks.Yes, they are probably winged flies. A week ago I had fliers and didn't know after I closely inspected the culture. Before that I fed a few fliers to my frog. Are there any health issues?
If they were running more quickly than the fruit flies then they were probably phorid flies .ED, they are running across the culture-2 of them. they have a very big abdomen or butt-not sure what you call it.