Combclawed beetle (Hymenorus sp)

I caught around 17 larva and 4 pupa of this species last year, in a rotting tree. I have kept them in a container filled with moist rotten wood. The larva mostly eat rotten wood, but will also eat dog food, fruits and veggies when they are offered. I am not sure what the adults eat, (or if they eat at all), but I have offered them dog food and apple slices. They adults live only a few weeks. Here are some pictures of the adults!

Hopefully the adults breed, they are a pretty cool species in my opinion and I would hate to lose them. That's all for today, I hope you guys enjoyed! :)