I found four of these in a rotten tree tunk in my back yard. These two were the largest and were about the same size so, they were great models for a front and back view. I guess they are playing dead. I thought that beak-looking structure on the underside was either a defense mechanism that would sting or pierce me or maybe it was for digging but I think it might be the thing that projects it into the air (I'm guessing to startle a predator-it sure started me)! This click beetle has a mighty clicker-made me jump each time-even when I was expecting it...I had to finaly set up a posing on some bark rather than my hand because I dropped my camera twice.