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I found this, which should reach about the same temperature as a rice cooker with its warm setting. Hopefully, it works. 

Did you get yours from @Peter Clausen? I managed to get four from him. I think I have at least one male and two females. There is one that I keep forgetting to check for the Harold’s Organ.  I am weighing them weekly and keeping record of exact pellet counts every day. 

If the beetles have left their pupal chambers, then should I be offering them food? I had thought they would stay in the chambers for a while before starting to run around. 

I found that four of my giant stag beetle larvae pupated unexpectedly. Since I was not expecting pupation, they were not in a substrate that was conducive for pupal cell formation. I made them floral foam chambers, and I wanted to make sure I got the proper proportions. I have great success with...

this looks like it is thoroughly fermented, right?

I mixed Traeger pellets and flour a couple months ago to make some substrate. My genius idea to keep it hot enough was to put it outside in a black bucket to absorb extra heat from the sun. Rather than stir it, I drilled holes in the bucket, so I could simply shake it to aerate it. It was...

Since it seems people are now just posting pictures of any large moth, here is my Argema mittrei specimen. I volunteer at a butterfly house, and I got to hold this one when it was alive.  PS. If you are wondering why it is pinned to a tree and not it a case, then I should mention that I took...

How long do P. truncatus adults stay in their pupal cells after eclosing? I got one of mine out, and it seems active. This is the first time I have raised a rhino beetle, so I do not have experience with other species as a comparison. Should I just put it in an enclosure with deep substrate...

I had not heard of B. rufipes before this post, but I found one crawling around inside my house just two days after reading this post! Is it possible to breed them in captivity?

So, despite me forgetting to make a new foam cell, my beetle emerged perfectly. I plant to release it after getting some good pictures. 

Does this look good? 

I have done that before, but I did not think the pictures were essential to answering my question. Here is the pupa though. 

I have been raising this larva in rotten wood for a few months, and I found it has pupated. Its pupal cell that it constructed did not look like a cell at all. I had not been expecting pupation, so it was just in regular substrate. I have read that artificial cells can be made with floral foam...

I have two A. oculatus adults that I want to breed. Can anyone tell if I have a male and a female? 

I was talking to a USDA entomologist, and I was told that the reason native Dynastes are regulated is because the larvae will eat live tree roots. I have never read anything saying this was true, but I was hoping there was someone who was more knowledgeable on this topic. I tried finding some...

I have been raising this A. oculatus grub, and I have been keeping careful track of its molts. I have had it since it was an L2 grub, and it molted once back in the fall. I went to check on it today, though, and I found it had molted again but was still a larva. The strange thing is that it did...