Solid black mass forming on mealworms

jwut

Arachnopeon
Joined
May 7, 2020
Messages
1
Hi all, I just joined this forum and I have questions pertaining to mealworms I’m keeping. I can’t seem to find any information about it, and I apologize if this has already been answered on this forum.

I was given these mealworms to feed to the hedgehog I am fostering. I have two containers of mealworms. Both containers have oatmeal substrate with potato slices.

I replaced the oatmeal substrate for both containers a little over a week ago. I checked on my mealworms and found that in one of my containers, there was a tiny mealworm with a solid black mass growing on its back, near its rear. I can describe it like a rock-hard scab on your knee. I took the mealworm out to inspect it, and I could see it couldn’t walk. It just laid on the surface and squirmed as if trying to remove the mass. I could very easily tell that the mass was growing from the inside out.

I looked it up but I couldn’t find anything, and my curiosity got the best of me. I began to pick off the mass. The final bit of it came off the mealworm, and a long, white, gooey string came out of the mealworm as I pulled the mass off. The mealworm died.

I didn’t see anything else on any of the mealworms, until yesterday. In the same container, I found a larger mealworm with a solid black mass, exactly the same as the other mealworm. It was clutching a piece of shed skin, but I don’t think it was its own shed skin since the mealworm was a normal tan color. It was doing the same thing - it couldn’t walk and it squirmed as if in uncomfortable pain.

I checked the other mealworms and found some that were beginning to develop a tiny black mass as well. They are all able to walk still. I placed all these mealworms, including the previous one, in another container to examine them.

I can’t seem to find any information about this. I’m very curious as to what this is, and I am also concerned as to what if I had fed a mealworm that was beginning to develop the mass to the hedgehog.

I’ve attached photos of the mealworm. Any help will be greatly appreciated. Thank you!
 

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mantiscatamp

Arachnoknight
Joined
Feb 20, 2020
Messages
282
The string bit could just be it's guts coming out cough- but yeah maybe it's smin spreading. I'd get some different mealworm at a pet shop or online gl with the hedgehogs
 

Hisserdude

Arachnoking
Joined
Apr 18, 2015
Messages
2,493
Those are scabs... So the mealworms are probably nipping at each other, especially sickly individuals, for some reason, potentially a lack of moisture? Try giving them a bit of carrot or something, the individual in that picture looks awful dehydrated, (very thin).
 
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