This is a male Duskywings.
Red-eyed fly, wings out to the sides, with a black and white striped pattern on its upper body and a checker pattern on its lower body.
Flies with fuzzy yellow/orange legs on dung. There were many of these pretty flies on the dung in a dump area (so I don't know what kind of dung). Their wings were overlapped rather than out to the side like house flies'.
Slim, tough fungi growing on wood. They start out white toward the top, then become black as they mature.