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Can mealworm beetles fly?
It seems like such a noobish question. I always thought it was a resounding "no, their shells are fused and can't open". I have a lot of beetles myself and I've never witnessed flight, even after taking one out and trying to get it to take off. Nothing.
But once in a while I hear someone mentioning them flying. And there are at least a couple clips on youtube showing them flying:
The comments mention something about how this only happens if they have no food and have lots of open space. Is that true? Do we just have different species?