Desert Stink Beetle Devours Yellow Beetle

Let's talk about bugs! I lived amongst them for six months while caretaking a ghost town, and started paying attention to their fascinating little world. Most of my friends won't like this video, but I think it's one of the coolest 'wildlife' moments I've captured - a desert stink beetle caught in the act of eating another bug.
I'm actually more of a rock hunter, but since the ghost town didn't have much to offer in the rock department, I found myself getting interested in all the bugs instead. I don't particularly love bugs, but I do love nature, and there's nothing more real than that. I ended up taking so many insect videos and photos that I started this channel to share what I discovered about these little creatures.
The black beetle you're seeing is called a desert stink beetle, named for its defensive habit of pointing its butt in the air (head down, ass up!) and spraying a stinky scent when threatened. I saw tons of these during our six months there, and yeah, I'll admit I purposely jumped near quite a few to see them do their butt-up display. Never got to see one actually spray though!
What makes this footage special is catching it feeding on that yellow beetle. I've searched everywhere trying to identify what kind of beetle it is, but haven't found a match. If anyone recognizes it, let me know in the comments!