blue death-feigning beetle help/should I be worried?

[quincely]

Cross-posting this from Reddit because I'm still concerned.

Hi! I got 3 BDFBs about a month ago, then went back to an expo and got 2 more this past weekend. This is one of the new ones. I got spooked about parasites thanks to various subreddits so the two newbies are in a quarantine tank (hence the paper towel, the others are on sand and coir). I’ve noticed her doing this - raising her butt in the air and looking like she’s trying to push something out. Is this a parasite? Attempt at laying an egg? Could she be impacted (can insects even get that?)? More importantly, if it’s something to worry about, what can I do?

I then also found these things (third picture) stuck to the inside of an old bone I gave them as a hide. Not sure if it's just frass or eggs or what.

I’ve fed them all organic veg/fruit (green pepper, sweet potato, carrot, banana), dried mealworms, and a prekilled cricket, same as the other 3 I’ve had. The other dude sharing her tank doesn’t seem to have any issues. He is male as far as I can tell but I haven’t SEEN them mate. She wanders around and eats fine. If anything, she's more adventurous than all but 1 of the other beetles.

 

[bjjpokemon910]

To me this looks like egg laying behavior that I see beetles do all the time, they are mostly Nocturnal so they could have easily mated while you were asleep. or while she was with other beetles before you bought them.

 

[quincely]

To me this looks like egg laying behavior that I see beetles do all the time, they are mostly Nocturnal so they could have easily mated while you were asleep. or while she was with other beetles before you bought them.

I hope that's the case. I've been keeping an eye on her and havent seen any eggs though - i feel like they should be easy to find on the towel? But thank you! I'm new to owning these and just don't want to add her to the main tank and potentially spread anything to my others.