large black bug inside tomatoes on ground
We have some large black and yellow insects inside tomatoes that have fallen to the ground. I picked up a tomato, and at least six scurried out. I do not ever remember seeing these, and cannot identify them by looking online. The closest I could come is a variety of shield bug? I am attaching a photo. It is about the size of a nickel. My question is what these insects are, and if they are harmful or beneficial.
Montgomery County Maryland
This looks like an American Carrion beetle. They are beneficial as they help with composting (breaking down) once-living materials.