I went to my LFS today and picked up a "Yellow Spot" pleco. They had a L# on the tank, but I didn't take a picture or right it down so now I forget, it was somthing like L-1xxB. the closest I have found on planetcatfish is a L142, but I am not sure.
From the picture the mouth doesn't look wide enough for it to be a Baryancistrus sp. L142, I think its a Hypancistrus but there are a few that are black with spots. It could be also be a Scobiancistrus, but Hypancistrus looks better for the moment.