Hitching a Ride

This fellow or lady wind up hitching a ride on me from one of the gardens I worked and dropped off of me onto the table joining us for slice of pizza at lunch. Where did I pick him/her up? Where were we suppose to drop it off?
It does raise questions, what is it? It a beetle I know that and maybe when I have time will try to find out.
Is it a generalist or is it host specific (survives on a certain type of plant or group of)?
Well, the best we could do is bring it back outside and place him or her in a tree.