Pokémon Model Ripping Project

[Alses]

Hi all I've started editing some models, and as expected I've found some textures problems, while i was fixing them i found a little something on the textures that seems impossible to fix.
Does anyone here know a fix or something for this little but really annoying problem?


The problem is in the poligons, but I can't figure out how to fix this, any tips?

Did you check the UV mapping? Because that's what this looks like to me =/
Worst case scenario you'll have to redo the wings which isn't too bad since it's a really simple shape.