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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?
 

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Discussion Starter · #8 ·
there are a few fliers in there indeed. the culture is close to 3weeks old. is it ok to feed from it or just scrap it?

anyway to pinpoint how this happened?
 

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ED, they are running across the culture-2 of them. they have a very big abdomen or butt-not sure what you call it.
If they were running more quickly than the fruit flies then they were probably phorid flies .
If you go to this site and scroll down there are some comparative pictures of the phorid fly that most commonly gets into cultures. The Scorpion Fauna - The "Enemies and Diseases" gallery

I freeze any cultures that phorid get into as they get into other things as well (like eggs or scratches), food (nothing like eating dinner and having one of those land on the food and start running around) as a simple precaution. There may be more in the culture as they will lay eggs through small holes in the lid.

If you google up phorid and look at the sort of things they normally inhabit, you'll see why they can be a problem. (they are a reason I stopped purchasing Zoophobas as I was getting them with the worms that had died before shipment.

Ed
 

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Discussion Starter · #13 ·
i destroyed the culture.

will all the pupa be that large?

reason i ask, i want to catch them in the culture before they take over so i can destroy it.
 

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As with melanogaster, the size can be different depending on how much food is available for the larva. In a high nutrient enviroment, the pupae will be large like those pupae.

Ed
 
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