Fly

This morning I was having breakfast outside, as I normally do, reading a book when this little chap alighted on the page, The white is the edge of the book. I think it is either an Asian Fruit Fly, dirosophila suzukii or a vinegar fly, dirosophila Melangogoster. The only difference seems to be that the fruit fly has a dark patch near the end of each wing but I couldn't see the end of the wing.  The fly is about 3mm long.