Ludite

My first adult emerged today!!! I was very excited (and surprised, to be quite honest.) I hope there will be more to come!

Hello, I'm new to this and got some G. caseyi larvae a few months ago. While doing a substrate change, I discovered what appears to be a pupal cell. I was wondering how long I should expect it to take to emerge(kept at about 70 F). Also, while searching for rotted wood to add to the substrate mix, I found a few Ceruchus piceus (my profile pic) and many many grubs which I assume are the same, being in close proximity. Does anyone raise these?