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As worms, or beetles?  

Maybe, I've never given it any thought, when I raised mealworms, it was for feeders, most beetles do fly though, some don't, but they're in the minority.

Some flying insects are reluctant to fly, many years ago, I'd caught a water strider and had it on the walk looking at it, when it flew off. I'd never

seen  one flying, and have never seen it mentioned in any book. 

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The beetles have wings. Although I’ve never seen an adult in my culture fly, I’m pretty sure they can as adults. If I’m wrong, please correct me.

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They are darkling beetles so their elytra are fused together after pupating. This creates a really hard exoskeleton and prevents water from escaping. All darklings are unable to fly.

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Apparently, darklings do in fact sometimes fly (in a limited way), but it's not a "normal" ability, and is caused by an occasional failure of the elytra to fuse during eclosion - 
 

 

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A lot of desert darklings do have their elytra fused, and don't even have flying wings underneath, Tenebrio molitor and a lot of the other grain pests on the other hand don't have fused elytra and can in fact fly, though I found the adults in my T.molitor culture were usually reluctant to unless conditions were bad. 

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On 3/6/2021 at 4:04 AM, BensBeasts1 said:

They are darkling beetles so their elytra are fused together after pupating. This creates a really hard exoskeleton and prevents water from escaping. All darklings are unable to fly.

I have done a autopsy on my dead E. Armata. They did not have any wings. 

But Ben, I believe we are talking about the more Forest species. 

On 3/22/2021 at 1:54 PM, Dynastes TItyus hunter said:

Some don't some do.

I believe all Tenebroides sp. can fly. But like Goliathus have said, it's in a limited way.

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