Excuse me if I butt in. For the sake of correctness of information, Dolphin is right and the one in the Commons' picture looks a lot like the left wing of a Cessna 172. However, the revealing detail – the bent pipe – is not the pitot tube, but the tank vent instead, which on the 172 (at least on the version P that I fly) is indeed fitted on the left wing only, outboard of the pitot tube. There is a good picture of the two parts at the bottom of this page.