or something very closely related is certainly what you've got. They will eat wood, but it may he hard to judge the amount of the wood that gets eaten if you've got anything much bigger than match-sticks in the tank, especially if you also feed the fish with other foods, such as algae wafers or other sinking food, because just like me, these fish like "tasty food", whether it's the right diet or not... So I eat too much pizza, and I'm sure my Panaque Maccus are eating too much of the Tetra Bits and not enough wood...

This is a common problem with feeding multiple fish in the same tank...
The translation of Panaque Maccus into Peckoltia Vittata is probably one of "reverse translation problems". Panaque Maccus's common name is Clown Pleco, but some other fish are also occasionally sold as "Clown Pleco". When looking up Clown Pleco in some literature, you may well find Peckoltia Vittata, as it's often also sold as "Clown Pleco".
Unless the fish is a fish that is very unique and/or commonly known by it's latin name, shop labels are quite often wrong... This doesn't make life easier for us that keep the fish, but sometimes it means that you can get some different fish by looking at ones that have are common, as there are several fish that will come as "by-catch" with for instance Panaque Maccus.
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Mats